Bump version & use snarkjs dependency from self-hosted tornado git registry

pass fixes size array arg in solidity poseidon implementation

.npmrc

@@ -0,0 +1 @@
+@tornado:registry=https://git.tornado.ws/api/packages/tornado-packages/npm/

README.md

@@ -1,4 +1,17 @@
-# cirpedersen
+# CircomLib
 
-Pedersen Hash and Exponentiation circuits using Baby Jub Curve in circom language
+## Description
 
+- This repository contains a library of circuit templates. 
+- All files are copyrighted under 2018 0KIMS association and part of the free software [circom](https://github.com/iden3/circom) (Zero Knowledge Circuit Compiler). 
+
+## Organisation
+
+This respository contains 5 folders:
+- `circuits`: it contains the implementation of different cryptographic primitives in circom language.
+- `calcpedersenbases`: set of functions in JavaScript used to find a set of points in [Baby Jubjub](https://github.com/barryWhiteHat/baby_jubjub) elliptic curve that serve as basis for the [Pedersen Hash](https://github.com/zcash/zcash/issues/2234).
+- `doc`: it contains some circuit schemes in ASCII (must be opened with Monodraw, an ASCII art editor for Mac).
+- `src`: it contains similar implementation of circuits in JavaScript.
+- `test`: tests.
+
+A description of the specific circuit templates for the `circuit` folder will be soon updated.

calcpedersenbases/calcpedersenbases.js

@@ -1,5 +1,5 @@
-const bn128 = require("snarkjs").bn128;
+const bn128 = require("@tornado/snarkjs").bn128;
-const bigInt = require("snarkjs").bigInt;
+const bigInt = require("@tornado/snarkjs").bigInt;
 const createBlakeHash = require("blake-hash");
 const babyJub = require("../src/babyjub");
 
@@ -8,17 +8,17 @@ function getPoint(S) {
     const h = createBlakeHash("blake256").update(S).digest();
 
     if (h.length != 32) {
-        throw new Error("Invalid length")
+        throw new Error("Invalid length");
     }
 
     let sign = false;
     if (h[31] & 0x80) {
-        h[31] = h[31] & 0x7F;
+        h[31] = h[31] & 0x7f;
         sign = true;
     }
 
     let y = bigInt(0);
-    for (let i=0; i<32; i++) {
+    for (let i = 0; i < 32; i++) {
         y = y.shl(8);
         y = y.add(bigInt(h[i]));
     }
@@ -28,9 +28,7 @@ function getPoint(S) {
 
     const y2 = F.square(y);
 
-    let x = F.sqrt(F.div(
+    let x = F.sqrt(F.div(F.sub(F.one, y2), F.sub(a, F.mul(d, y2))));
-        F.sub(F.one, y2),
-        F.sub(a, F.mul(d, y2))));
 
     if (x == null) return null;
 
@@ -43,41 +41,34 @@ function getPoint(S) {
     return p8;
 }
 
-
 function generatePoint(S) {
-    let p= null;
+    let p = null;
     let idx = 0;
-    while (p==null) {
+    while (p == null) {
         let sidx = "" + idx;
-        while (sidx.length<16) sidx = "0"+sidx;
+        while (sidx.length < 16) sidx = "0" + sidx;
-        p = getPoint(S+"_"+sidx);
+        p = getPoint(S + "_" + sidx);
         idx++;
     }
-    if (!babyJub.inCurve(p)){
+    if (!babyJub.inCurve(p)) {
         throw new Error("Point not in curve");
     }
     return p;
 }
 
-
-
-
-
 const g = [
-    bigInt("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
+    bigInt("5299619240641551281634865583518297030282874472190772894086521144482721001553"),
-    bigInt("2626589144620713026669568689430873010625803728049924121243784502389097019475")];
+    bigInt("16950150798460657717958625567821834550301663161624707787222815936182638968203"),
+];
 
 // Sanity check
 if (!babyJub.inCurve(g)) {
     throw new Error("Generator not In curve -> Some thing goes wrong...");
 }
 
-for (let i=0; i<25; i++) {
+for (let i = 0; i < 25; i++) {
-    let S = "" +i;
+    let S = "" + i;
-    while (S.length<16) S = "0"+S;
+    while (S.length < 16) S = "0" + S;
-    const P = generatePoint("Iden3_PedersenGenerator_"+S);
+    const P = generatePoint("Iden3_PedersenGenerator_" + S);
     console.log(`[${P[0].toString()}, ${P[1].toString()}]`);
 }
-
-
-

circuits/README.md

@@ -0,0 +1,830 @@
+# CircomLib/Circuits
+
+## Description
+
+- This folder contains circuit templates for standard operations and many cryptographic primitives.
+- Below you can find specifications of each function. In the representation of elements, there are three tyes:
+    - Binary
+    - String
+    - Field element (the field is specified in each case. We consider 2 possible fields: Fp and Fr, where p... and r... .)
+
+## Table of Contents
+
+[TOC]
+
+## Jordi
+
+* compconstant - Returns 1 if `in` (expanded to binary array) > `ct`
+* aliascheck - check if `in` (expanded to binary array) oveflowed its 254 bits (<= -1)
+* babyjub - twisted Edwards curve 168700.x^2 + y^2 = 1 + 168696.x^2.y^2
+  * BabyAdd - (`xout`,`yout`) = (`x1`,`y1`) + (`x2`,`y2`)
+  * BabyDbl - (`xout`,`yout`) = 2*(`x`,`y`)
+  * BabyCheck - check that (`x`,`y`) is on the curve
+* binsub - binary subtraction
+* gates - logical gates
+* mimc - SNARK-friendly hash Minimal Multiplicative Complexity.
+  * https://eprint.iacr.org/2016/492.pdf
+  * zcash/zcash#2233
+* smt - Sparse Merkle Tree
+  * https://ethresear.ch/t/optimizing-sparse-merkle-trees/3751
+* montgomery https://en.wikipedia.org/wiki/Montgomery_curve
+
+## Circuits
+
+### sha256
+
+Folder containing the implementation of sha256 hash circuit.
+
+### smt
+
+Folder containing the circuit implementation of Sparse Merkle Trees.
+
+### aliascheck
+
+- `AliasCheck()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+    
+### babyjub
+
+Arithmetic on [Baby Jubjub elliptic curve](https://github.com/barryWhiteHat/baby_jubjub) in twisted Edwards form. (TODO: Expose here the characteristics of the curve?)
+
+
+- `BabyAdd()`
+
+    - DESCRIPTION
+    
+      It adds two points on the Baby Jubjub curve. More specifically, given two points P1 = (`x1`, `y1`) and P2 = (`x2`, `y2`) it returns a point P3 = (`xout`, `yout`)  such that
+
+        (`xout`, `yout`) =  (`x1`,`y1`) + (`x2`,`y2`) 
+             = ((`x1y2`+`y1x2`)/(1+`dx1x2y1y2`)),(`y1y2`-`ax1x2`)/(1-`dx1x2y1y2`))
+    
+    - SCHEMA
+       ```
+                                        var a     var d
+                                          |         |
+                                          |         |
+                                    ______v_________v_______     
+                   input x1 ---->  |                        |
+                   input y1 ---->  |        BabyAdd()       | ----> output xout
+                   input x2 ---->  |                        | ----> output yout
+                   input y2 ---->  |________________________|     
+       ```
+
+    - INPUTS
+
+      | Input         | Representation | Description         |                                             |
+      | ------------- | -------------  | -------------       | -------------                               |
+      | `x1`          | Bigint         | Field element of Fp | First coordinate of a point (x1, y1) on E.  |
+      | `y1`          | Bigint         | Field element of Fp | Second coordinate of a point (x1, y1) on E. |
+      | `x2`          | Bigint         | Field element of Fp | First coordinate of a point (x2, y2) on E.  |
+      | `y2`          | Bigint         | Field element of Fp | Second coordinate of a point (x2, y2) on E. |
+   
+      Requirement: at least `x1`!=`x2` or `y1`!=`y2`.
+
+    - OUTPUT
+        
+      | Input         | Representation | Description         |                                             |
+      | ------------- | -------------  | -------------       | -------------                               |
+      | `xout`          | Bigint         | Field element of Fp | First coordinate of the addition point (xout, yout) = (x1, y1) + (x2, y2).  |
+      | `yout`          | Bigint         | Field element of Fp | Second coordinate of the addition point (xout, yout) = (x1, y1) + (x2, y2). |
+        
+    - BENCHMARKS (constraints)
+
+    - EXAMPLE
+
+- `BabyDbl()`
+    - DESCRIPTION : doubles a point (`xout`,`yout`) = 2*(`x`,`y`).
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `BabyCheck()`
+
+    - DESCRIPTION : checks if a given point is in the curve. 
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `BabyPbk()`
+
+    - DESCRIPTION: : given a private key, it returns the associated public key.
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+
+### binsub
+
+- `BinSub(n)`    
+
+    - DESCRIPTION: binary substraction.
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### binsum
+
+- `nbits(a)`
+
+    - DESCRIPTION : binary sum. 
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `BinSum(n, ops)`
+
+    - DESCRIPTION 
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### bitify
+
+- `Num2Bits()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Num2Bits_strict()`
+
+    - DESCRIPTION 
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Bits2Num()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Bits2Num_strict()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Num2BitsNeg()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### comparators
+
+- `IsZero() `
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `IsEqual()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `ForceEqualIfEnabled()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `LessThan()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `GreaterThan()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `GreaterEqThan()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### compconstant 
+
+- `CompConstant(ct)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### eddsa
+
+Edwards Digital Signature Algorithm in Baby Jubjbub (link a eddsa)
+
+- `EdDSAVerifier(n)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### eddsamimc
+
+- `EdDSAMiMCVerifier()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### eddsamimcsponge
+
+- `EdDSAMiMCSpongeVerifier()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### eddsaposeidon
+
+- `EdDSAPoseidonVerifier()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### escalarmul
+
+- `EscalarMulWindow(base, k)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `EscalarMul(n, base)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### escalarmulany
+
+- `Multiplexor2()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `BitElementMulAny()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `SegmentMulAny(n)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `EscalarMulAny(n)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### escalarmulfix
+
+- `WindowMulFix()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `SegmentMulFix(nWindows)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `EscalarMulFix(n, BASE)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### escalarmulw4table
+
+- `pointAdd`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `EscalarMulW4Table`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### gates
+
+- `XOR`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `AND`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `OR`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `NOT`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `NAND`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `NOR`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `MultiAND`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### mimc
+
+Implementation of MiMC-7 hash in Fp being...  (link to description of the hash)
+
+- `MiMC7(nrounds)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `MultiMiMC7(nInputs, nRounds)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### mimcsponge
+
+- `MiMCSponge(nInputs, nOutputs)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `MiMCFeistel(nrounds)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### montgomery
+
+- `Edwards2Montgomery()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Montgomery2Edwards()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `MontgomeryAdd()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `MontgomeryDouble()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### multiplexer
+
+- `log2(a)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `EscalarProduct(w)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Decoder(w)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Multiplexer(wIn, nIn)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### mux1
+
+- `MultiMux1(n)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Mux1()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### mux2
+
+- `MultiMux2(n)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Mux2()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### mux3
+
+- `MultiMux3(n)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Mux3()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### mux4
+
+- `MultiMux4(n)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Mux4()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### pedersen_old
+
+Old version of the Pedersen hash (do not use any 
+more?).
+
+### pedersen
+
+- `Window4()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Segment(nWindows)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Pedersen(n)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### pointbits  
+
+- `sqrt(n)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Bits2Point()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Bits2Point_Strict()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Point2Bits`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Point2Bits_Strict`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### poseidon
+
+Implementation of Poseidon hash function (LINK)
+
+- `Sigma()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Ark(t, C, r)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Mix(t, M)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Poseidon(nInputs)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### sign
+
+- `Sign()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### switcher
+
+- `Switcher()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE

circuits/aliascheck.circom

@@ -21,7 +21,6 @@ include "compconstant.circom";
 
 
 template AliasCheck() {
-
     signal input in[254];
 
     component  compConstant = CompConstant(-1);
@@ -30,3 +29,15 @@ template AliasCheck() {
 
     compConstant.out === 0;
 }
+
+template AliasCheckBabyJub() {
+    signal input in[251];
+    signal input enabled;
+
+    component  compConstant = CompConstant(2736030358979909402780800718157159386076813972158567259200215660948447373040);
+
+    for (var i=0; i<251; i++) in[i] ==> compConstant.in[i];
+    for (var i=0; i<3; i++) 0 ==> compConstant.in[251+i];
+
+    compConstant.out*enabled === 0;
+}

circuits/babyjub.circom

@@ -17,6 +17,9 @@
     along with circom. If not, see <https://www.gnu.org/licenses/>.
 */
 
+include "bitify.circom";
+include "escalarmulfix.circom";
+
 template BabyAdd() {
     signal input x1;
     signal input y1;
@@ -77,3 +80,27 @@ template BabyCheck() {
 
     a*x2 + y2 === 1 + d*x2*y2;
 }
+
+// Extracts the public key from private key, as mentioned in https://tools.ietf.org/html/rfc8032
+template BabyPbk() {
+    signal private input  in;
+    signal         output Ax;
+    signal         output Ay;
+
+    var BASE8 = [
+        5299619240641551281634865583518297030282874472190772894086521144482721001553,
+        16950150798460657717958625567821834550301663161624707787222815936182638968203
+    ];
+
+    component pvkBits = Num2Bits(253);
+    pvkBits.in <== in;
+
+    component mulFix = EscalarMulFix(253, BASE8);
+
+    var i;
+    for (i=0; i<253; i++) {
+        mulFix.e[i] <== pvkBits.out[i];
+    }
+    Ax  <== mulFix.out[0];
+    Ay  <== mulFix.out[1];
+}

circuits/binsum.circom

@@ -50,6 +50,7 @@ To waranty binary outputs:
     This function calculates the number of extra bits in the output to do the full sum.
  */
 
+/* a must be < Nq/2, where Nq is the number of elements in the scalar field */
 function nbits(a) {
     var n = 1;
     var r = 0;
@@ -61,6 +62,7 @@ function nbits(a) {
 }
 
 
+/* n must be such that (2**(n+1) -2) < Nq/ops, where Nq is the number of bits in the scalar field */
 template BinSum(n, ops) {
     var nout = nbits((2**n -1)*ops);
     signal input in[ops][n];

circuits/bitify.circom

@@ -21,6 +21,7 @@ include "comparators.circom";
 include "aliascheck.circom";
 
 
+/* This doesn't check aliasing, so for n > 253 there are multiple bit strings for each number */
 template Num2Bits(n) {
     signal input in;
     signal output out[n];
@@ -76,6 +77,7 @@ template Bits2Num_strict() {
     b2n.out ==> out;
 }
 
+/* n must not exceed 253 */  
 template Num2BitsNeg(n) {
     signal input in;
     signal output out[n];

circuits/comparators.circom

@@ -55,7 +55,7 @@ template ForceEqualIfEnabled() {
     (1 - isz.out)*enabled === 0;
 }
 
-
+/*
 // N is the number of bits the input  have.
 // The MSF is the sign bit.
 template LessThan(n) {
@@ -83,3 +83,57 @@ template LessThan(n) {
 
     adder.out[n-1] ==> out;
 }
+*/
+
+template LessThan(n) {
+    signal input in[2];
+    signal output out;
+
+    component n2b = Num2Bits(n*2+1);
+
+    n2b.in <== in[0]+ (1<<n) - in[1];
+
+    out <== 1-n2b.out[n];
+}
+
+
+
+// N is the number of bits the input  have.
+// The MSF is the sign bit.
+template LessEqThan(n) {
+    signal input in[2];
+    signal output out;
+
+    component lt = LessThan(n);
+
+    lt.in[0] <== in[0];
+    lt.in[1] <== in[1]+1;
+    lt.out ==> out;
+}
+
+// N is the number of bits the input  have.
+// The MSF is the sign bit.
+template GreaterThan(n) {
+    signal input in[2];
+    signal output out;
+
+    component lt = LessThan(n);
+
+    lt.in[0] <== in[1];
+    lt.in[1] <== in[0];
+    lt.out ==> out;
+}
+
+// N is the number of bits the input  have.
+// The MSF is the sign bit.
+template GreaterEqThan(n) {
+    signal input in[2];
+    signal output out;
+
+    component lt = LessThan(n);
+
+    lt.in[0] <== in[1];
+    lt.in[1] <== in[0]+1;
+    lt.out ==> out;
+}
+

circuits/eddsa.circom

@@ -17,7 +17,7 @@
     along with circom. If not, see <https://www.gnu.org/licenses/>.
 */
 
-include "compconstant.circom";
+include "aliascheck.circom";
 include "pointbits.circom";
 include "pedersen.circom";
 include "escalarmulany.circom";
@@ -40,12 +40,15 @@ template EdDSAVerifier(n) {
 
 // Ensure S<Subgroup Order
 
-    component  compConstant = CompConstant(2736030358979909402780800718157159386076813972158567259200215660948447373040);
+    component aliasCheck = AliasCheckBabyJub();
+    aliasCheck.enabled <== 1;
 
-    for (i=0; i<254; i++) {
+    for (i=0; i<251; i++) {
-        S[i] ==> compConstant.in[i];
+        S[i] ==> aliasCheck.in[i];
     }
-    compConstant.out === 0;
+    S[251] === 0;
+    S[252] === 0;
+    S[253] === 0;
     S[254] === 0;
     S[255] === 0;
 
@@ -123,8 +126,8 @@ template EdDSAVerifier(n) {
 // Calculate left side of equation left = S*B8
 
     var BASE8 = [
-        17777552123799933955779906779655732241715742912184938656739573121738514868268,
+        5299619240641551281634865583518297030282874472190772894086521144482721001553,
-        2626589144620713026669568689430873010625803728049924121243784502389097019475
+        16950150798460657717958625567821834550301663161624707787222815936182638968203
     ];
     component mulFix = EscalarMulFix(256, BASE8);
     for (i=0; i<256; i++) {

circuits/eddsamimc.circom

@@ -17,7 +17,7 @@
     along with circom. If not, see <https://www.gnu.org/licenses/>.
 */
 
-include "compconstant.circom";
+include "aliascheck.circom";
 include "pointbits.circom";
 include "mimc.circom";
 include "bitify.circom";
@@ -39,16 +39,15 @@ template EdDSAMiMCVerifier() {
 
 // Ensure S<Subgroup Order
 
-    component snum2bits = Num2Bits(253);
+    component snum2bits = Num2Bits(251);
     snum2bits.in <== S;
 
-    component  compConstant = CompConstant(2736030358979909402780800718157159386076813972158567259200215660948447373040);
+    component aliasCheck = AliasCheckBabyJub();
+    aliasCheck.enabled <== 1;
 
-    for (i=0; i<253; i++) {
+    for (i=0; i<251; i++) {
-        snum2bits.out[i] ==> compConstant.in[i];
+        snum2bits.out[i] ==> aliasCheck.in[i];
     }
-    compConstant.in[253] <== 0;
-    compConstant.out === 0;
 
 // Calculate the h = H(R,A, msg)
 
@@ -58,6 +57,7 @@ template EdDSAMiMCVerifier() {
     hash.in[2] <== Ax;
     hash.in[3] <== Ay;
     hash.in[4] <== M;
+    hash.k <== 0;
 
     component h2bits = Num2Bits_strict();
     h2bits.in <== hash.out;
@@ -100,11 +100,11 @@ template EdDSAMiMCVerifier() {
 // Calculate left side of equation left = S*B8
 
     var BASE8 = [
-        17777552123799933955779906779655732241715742912184938656739573121738514868268,
+        5299619240641551281634865583518297030282874472190772894086521144482721001553,
-        2626589144620713026669568689430873010625803728049924121243784502389097019475
+        16950150798460657717958625567821834550301663161624707787222815936182638968203
     ];
-    component mulFix = EscalarMulFix(253, BASE8);
+    component mulFix = EscalarMulFix(251, BASE8);
-    for (i=0; i<253; i++) {
+    for (i=0; i<251; i++) {
         mulFix.e[i] <== snum2bits.out[i];
     }
 

circuits/eddsamimcsponge.circom

@@ -0,0 +1,122 @@
+/*
+    Copyright 2018 0KIMS association.
+
+    This file is part of circom (Zero Knowledge Circuit Compiler).
+
+    circom is a free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    circom is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+    or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
+    License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with circom. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+include "aliascheck.circom";
+include "pointbits.circom";
+include "mimcsponge.circom";
+include "bitify.circom";
+include "escalarmulany.circom";
+include "escalarmulfix.circom";
+
+template EdDSAMiMCSpongeVerifier() {
+    signal input enabled;
+    signal input Ax;
+    signal input Ay;
+
+    signal input S;
+    signal input R8x;
+    signal input R8y;
+
+    signal input M;
+
+    var i;
+
+// Ensure S<Subgroup Order
+
+    component snum2bits = Num2Bits(251);
+    snum2bits.in <== S;
+
+    component aliasCheck = AliasCheckBabyJub();
+    aliasCheck.enabled <== 1;
+
+    for (i=0; i<251; i++) {
+        snum2bits.out[i] ==> aliasCheck.in[i];
+    }
+
+// Calculate the h = H(R,A, msg)
+
+    component hash = MiMCSponge(5, 1);
+    hash.ins[0] <== R8x;
+    hash.ins[1] <== R8y;
+    hash.ins[2] <== Ax;
+    hash.ins[3] <== Ay;
+    hash.ins[4] <== M;
+    hash.k <== 0;
+
+    component h2bits = Num2Bits_strict();
+    h2bits.in <== hash.outs[0];
+
+// Calculate second part of the right side:  right2 = h*8*A
+
+    // Multiply by 8 by adding it 3 times.  This also ensure that the result is in
+    // the subgroup.
+    component dbl1 = BabyDbl();
+    dbl1.x <== Ax;
+    dbl1.y <== Ay;
+    component dbl2 = BabyDbl();
+    dbl2.x <== dbl1.xout;
+    dbl2.y <== dbl1.yout;
+    component dbl3 = BabyDbl();
+    dbl3.x <== dbl2.xout;
+    dbl3.y <== dbl2.yout;
+
+    // We check that A is not zero.
+    component isZero = IsZero();
+    isZero.in <== dbl3.x;
+    isZero.out === 0;
+
+    component mulAny = EscalarMulAny(254);
+    for (i=0; i<254; i++) {
+        mulAny.e[i] <== h2bits.out[i];
+    }
+    mulAny.p[0] <== dbl3.xout;
+    mulAny.p[1] <== dbl3.yout;
+
+
+// Compute the right side: right =  R8 + right2
+
+    component addRight = BabyAdd();
+    addRight.x1 <== R8x;
+    addRight.y1 <== R8y;
+    addRight.x2 <== mulAny.out[0];
+    addRight.y2 <== mulAny.out[1];
+
+// Calculate left side of equation left = S*B8
+
+    var BASE8 = [
+        5299619240641551281634865583518297030282874472190772894086521144482721001553,
+        16950150798460657717958625567821834550301663161624707787222815936182638968203
+    ];
+    component mulFix = EscalarMulFix(251, BASE8);
+    for (i=0; i<251; i++) {
+        mulFix.e[i] <== snum2bits.out[i];
+    }
+
+// Do the comparation left == right if enabled;
+
+    component eqCheckX = ForceEqualIfEnabled();
+    eqCheckX.enabled <== enabled;
+    eqCheckX.in[0] <== mulFix.out[0];
+    eqCheckX.in[1] <== addRight.xout;
+
+    component eqCheckY = ForceEqualIfEnabled();
+    eqCheckY.enabled <== enabled;
+    eqCheckY.in[0] <== mulFix.out[1];
+    eqCheckY.in[1] <== addRight.yout;
+}

circuits/eddsaposeidon.circom

@@ -0,0 +1,121 @@
+/*
+    Copyright 2018 0KIMS association.
+
+    This file is part of circom (Zero Knowledge Circuit Compiler).
+
+    circom is a free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    circom is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+    or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
+    License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with circom. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+include "compconstant.circom";
+include "poseidon.circom";
+include "bitify.circom";
+include "escalarmulany.circom";
+include "escalarmulfix.circom";
+
+template EdDSAPoseidonVerifier() {
+    signal input enabled;
+    signal input Ax;
+    signal input Ay;
+
+    signal input S;
+    signal input R8x;
+    signal input R8y;
+
+    signal input M;
+
+    var i;
+
+// Ensure S<Subgroup Order
+
+    component snum2bits = Num2Bits(251);
+    snum2bits.in <== S;
+
+    component aliasCheck = AliasCheckBabyJub();
+    aliasCheck.enabled <== enabled;
+
+    for (i=0; i<251; i++) {
+        snum2bits.out[i] ==> aliasCheck.in[i];
+    }
+
+// Calculate the h = H(R,A, msg)
+
+    component hash = Poseidon(5);
+
+    hash.inputs[0] <== R8x;
+    hash.inputs[1] <== R8y;
+    hash.inputs[2] <== Ax;
+    hash.inputs[3] <== Ay;
+    hash.inputs[4] <== M;
+
+    component h2bits = Num2Bits_strict();
+    h2bits.in <== hash.out;
+
+// Calculate second part of the right side:  right2 = h*8*A
+
+    // Multiply by 8 by adding it 3 times.  This also ensure that the result is in
+    // the subgroup.
+    component dbl1 = BabyDbl();
+    dbl1.x <== Ax;
+    dbl1.y <== Ay;
+    component dbl2 = BabyDbl();
+    dbl2.x <== dbl1.xout;
+    dbl2.y <== dbl1.yout;
+    component dbl3 = BabyDbl();
+    dbl3.x <== dbl2.xout;
+    dbl3.y <== dbl2.yout;
+
+    // We check that A is not zero.
+    component isZero = IsZero();
+    isZero.in <== dbl3.x;
+    isZero.out*enabled === 0;
+
+    component mulAny = EscalarMulAny(254);
+    for (i=0; i<254; i++) {
+        mulAny.e[i] <== h2bits.out[i];
+    }
+    mulAny.p[0] <== dbl3.xout;
+    mulAny.p[1] <== dbl3.yout;
+
+
+// Compute the right side: right =  R8 + right2
+
+    component addRight = BabyAdd();
+    addRight.x1 <== R8x;
+    addRight.y1 <== R8y;
+    addRight.x2 <== mulAny.out[0];
+    addRight.y2 <== mulAny.out[1];
+
+// Calculate left side of equation left = S*B8
+
+    var BASE8 = [
+        5299619240641551281634865583518297030282874472190772894086521144482721001553,
+        16950150798460657717958625567821834550301663161624707787222815936182638968203
+    ];
+    component mulFix = EscalarMulFix(251, BASE8);
+    for (i=0; i<251; i++) {
+        mulFix.e[i] <== snum2bits.out[i];
+    }
+
+// Do the comparation left == right if enabled;
+
+    component eqCheckX = ForceEqualIfEnabled();
+    eqCheckX.enabled <== enabled;
+    eqCheckX.in[0] <== mulFix.out[0];
+    eqCheckX.in[1] <== addRight.xout;
+
+    component eqCheckY = ForceEqualIfEnabled();
+    eqCheckY.enabled <== enabled;
+    eqCheckY.in[0] <== mulFix.out[1];
+    eqCheckY.in[1] <== addRight.yout;
+}

circuits/escalarmul.circom

@@ -1,4 +1,4 @@
-/*
+  /*
     Copyright 2018 0KIMS association.
 
     This file is part of circom (Zero Knowledge Circuit Compiler).
@@ -71,7 +71,7 @@ template EscalarMulWindow(base, k) {
     signal input sel[4];
     signal output out[2];
 
-    component table;
+    var table;
     component mux;
     component adder;
 
@@ -86,8 +86,8 @@ template EscalarMulWindow(base, k) {
     }
 
     for (i=0; i<16; i++) {
-        table.out[i][0] ==> mux.c[0][i];
+        mux.c[0][i] <== table[i][0];
-        table.out[i][1] ==> mux.c[1][i];
+        mux.c[1][i] <== table[i][1];
     }
 
     in[0] ==> adder.x1;

circuits/escalarmulany.circom

@@ -19,6 +19,7 @@
 
 include "montgomery.circom";
 include "babyjub.circom";
+include "comparators.circom";
 
 template Multiplexor2() {
     signal input sel;
@@ -138,6 +139,8 @@ template EscalarMulAny(n) {
     component doublers[nsegments-1];
     component m2e[nsegments-1];
     component adders[nsegments-1];
+    component zeropoint = IsZero();
+    zeropoint.in <== p[0];
 
     var s;
     var i;
@@ -154,8 +157,9 @@ template EscalarMulAny(n) {
         }
 
         if (s==0) {
-            p[0] ==> segments[s].p[0];
+            // force G8 point if input point is zero
-            p[1] ==> segments[s].p[1];
+            segments[s].p[0] <== p[0] + (5299619240641551281634865583518297030282874472190772894086521144482721001553 - p[0])*zeropoint.out;
+            segments[s].p[1] <== p[1] + (16950150798460657717958625567821834550301663161624707787222815936182638968203 - p[1])*zeropoint.out;
         } else {
             doublers[s-1] = MontgomeryDouble();
             m2e[s-1] = Montgomery2Edwards();
@@ -183,10 +187,10 @@ template EscalarMulAny(n) {
     }
 
     if (nsegments == 1) {
-        segments[0].out[0] ==> out[0];
+        segments[0].out[0]*(1-zeropoint.out) ==> out[0];
-        segments[0].out[1] ==> out[1];
+        segments[0].out[1]+(1-segments[0].out[1])*zeropoint.out ==> out[1];
     } else {
-        adders[nsegments-2].xout ==> out[0];
+        adders[nsegments-2].xout*(1-zeropoint.out) ==> out[0];
-        adders[nsegments-2].yout ==> out[1];
+        adders[nsegments-2].yout+(1-adders[nsegments-2].yout)*zeropoint.out ==> out[1];
     }
 }

circuits/escalarmulfix.circom

@@ -28,6 +28,23 @@ include "babyjub.circom";
 
     The result should be compensated.
  */
+
+/*
+
+    The scalar is s = a0 + a1*2^3 + a2*2^6 + ...... + a81*2^243
+    First We calculate Q = B + 2^3*B + 2^6*B + ......... + 2^246*B
+
+    Then we calculate S1 = 2*2^246*B + (1 + a0)*B + (2^3 + a1)*B + .....+ (2^243 + a81)*B
+
+    And Finaly we compute the result: RES = SQ - Q
+
+    As you can see the input of the adders cannot be equal nor zero, except for the last
+    substraction that it's done in montgomery.
+
+    A good way to see it is that the accumulator input of the adder >= 2^247*B and the other input
+    is the output of the windows that it's going to be <= 2^246*B
+ */
+ /* base must not be the neutral element nor points of small order */
 template WindowMulFix() {
     signal input in[3];
     signal input base[2];
@@ -117,11 +134,12 @@ template WindowMulFix() {
 
 /*
     This component does a multiplication of a escalar times a fix base
+    nWindows must not exceed 82
     Signals:
         e: The scalar in bits
         base: the base point in edwards format
         out:  The result
-        dbl: Point in Edwards to be linked to the next segment.
+        dbl: Point in Montgomery to be linked to the next segment.
  */
 
 template SegmentMulFix(nWindows) {
@@ -140,54 +158,60 @@ template SegmentMulFix(nWindows) {
     e2m.in[1] <== base[1];
 
     component windows[nWindows];
-    component adders[nWindows-1];
+    component adders[nWindows];
-    component cadders[nWindows-1];
+    component cadders[nWindows];
+
+    // In the last step we add an extra doubler so that numbers do not match.
+    component dblLast = MontgomeryDouble();
+
     for (i=0; i<nWindows; i++) {
         windows[i] = WindowMulFix();
+        cadders[i] = MontgomeryAdd();
         if (i==0) {
             windows[i].base[0] <== e2m.out[0];
             windows[i].base[1] <== e2m.out[1];
+            cadders[i].in1[0] <== e2m.out[0];
+            cadders[i].in1[1] <== e2m.out[1];
         } else {
             windows[i].base[0] <== windows[i-1].out8[0];
             windows[i].base[1] <== windows[i-1].out8[1];
-
+            cadders[i].in1[0] <== cadders[i-1].out[0];
-            adders[i-1] = MontgomeryAdd();
+            cadders[i].in1[1] <== cadders[i-1].out[1];
-            cadders[i-1] = MontgomeryAdd();
+        }
-            if (i==1) {
+        if (i<nWindows-1) {
-                adders[i-1].in1[0] <== windows[0].out[0];
+            cadders[i].in2[0] <== windows[i].out8[0];
-                adders[i-1].in1[1] <== windows[0].out[1];
+            cadders[i].in2[1] <== windows[i].out8[1];
-                cadders[i-1].in1[0] <== e2m.out[0];
+        } else {
-                cadders[i-1].in1[1] <== e2m.out[1];
+            dblLast.in[0] <== windows[i].out8[0];
-            } else {
+            dblLast.in[1] <== windows[i].out8[1];
-                adders[i-1].in1[0] <== adders[i-2].out[0];
+            cadders[i].in2[0] <== dblLast.out[0];
-                adders[i-1].in1[1] <== adders[i-2].out[1];
+            cadders[i].in2[1] <== dblLast.out[1];
-                cadders[i-1].in1[0] <== cadders[i-2].out[0];
-                cadders[i-1].in1[1] <== cadders[i-2].out[1];
-            }
-            adders[i-1].in2[0] <== windows[i].out[0];
-            adders[i-1].in2[1] <== windows[i].out[1];
-            cadders[i-1].in2[0] <== windows[i-1].out8[0];
-            cadders[i-1].in2[1] <== windows[i-1].out8[1];
         }
         for (j=0; j<3; j++) {
             windows[i].in[j] <== e[3*i+j];
         }
     }
 
+    for (i=0; i<nWindows; i++) {
+        adders[i] = MontgomeryAdd();
+        if (i==0) {
+            adders[i].in1[0] <== dblLast.out[0];
+            adders[i].in1[1] <== dblLast.out[1];
+        } else {
+            adders[i].in1[0] <== adders[i-1].out[0];
+            adders[i].in1[1] <== adders[i-1].out[1];
+        }
+        adders[i].in2[0] <== windows[i].out[0];
+        adders[i].in2[1] <== windows[i].out[1];
+    }
+
     component m2e = Montgomery2Edwards();
     component cm2e = Montgomery2Edwards();
 
-    if (nWindows > 1) {
+    m2e.in[0] <== adders[nWindows-1].out[0];
-        m2e.in[0] <== adders[nWindows-2].out[0];
+    m2e.in[1] <== adders[nWindows-1].out[1];
-        m2e.in[1] <== adders[nWindows-2].out[1];
+    cm2e.in[0] <== cadders[nWindows-1].out[0];
-        cm2e.in[0] <== cadders[nWindows-2].out[0];
+    cm2e.in[1] <== cadders[nWindows-1].out[1];
-        cm2e.in[1] <== cadders[nWindows-2].out[1];
-    } else {
-        m2e.in[0] <== windows[0].out[0];
-        m2e.in[1] <== windows[0].out[1];
-        cm2e.in[0] <== e2m.out[0];
-        cm2e.in[1] <== e2m.out[1];
-    }
 
     component cAdd = BabyAdd();
     cAdd.x1 <== m2e.out[0];
@@ -195,7 +219,6 @@ template SegmentMulFix(nWindows) {
     cAdd.x2 <== -cm2e.out[0];
     cAdd.y2 <== cm2e.out[1];
 
-
     cAdd.xout ==> out[0];
     cAdd.yout ==> out[1];
 
@@ -214,8 +237,8 @@ template EscalarMulFix(n, BASE) {
     signal input e[n];              // Input in binary format
     signal output out[2];           // Point (Twisted format)
 
-    var nsegments = (n-1)\249 +1;
+    var nsegments = (n-1)\246 +1;       // 249 probably would work. But I'm not sure and for security I keep 246
-    var nlastsegment = n - (nsegments-1)*249;
+    var nlastsegment = n - (nsegments-1)*246;
 
     component segments[nsegments];
 
@@ -225,17 +248,17 @@ template EscalarMulFix(n, BASE) {
     var s;
     var i;
     var nseg;
-    var nWindows
+    var nWindows;
 
     for (s=0; s<nsegments; s++) {
 
-        nseg = (s < nsegments-1) ? 249 : nlastsegment;
+        nseg = (s < nsegments-1) ? 246 : nlastsegment;
         nWindows = ((nseg - 1)\3)+1;
 
         segments[s] = SegmentMulFix(nWindows);
 
         for (i=0; i<nseg; i++) {
-            segments[s].e[i] <== e[s*249+i];
+            segments[s].e[i] <== e[s*246+i];
         }
 
         for (i = nseg; i<nWindows*3; i++) {

circuits/escalarmulw4table.circom

@@ -27,8 +27,8 @@ function pointAdd(x1,y1,x2,y2) {
     return res;
 }
 
-template EscalarMulW4Table(base, k) {
+function EscalarMulW4Table(base, k) {
-    signal output out[16][2];
+    var out[16][2];
 
     var i;
     var p[2];
@@ -39,11 +39,13 @@ template EscalarMulW4Table(base, k) {
         dbl = pointAdd(dbl[0], dbl[1], dbl[0], dbl[1]);
     }
 
-    out[0][0] <== 0;
+    out[0][0] = 0;
-    out[0][1] <== 1;
+    out[0][1] = 1;
     for (i=1; i<16; i++) {
         p = pointAdd(out[i-1][0], out[i-1][1], dbl[0], dbl[1]);
-        out[i][0] <== p[0];
+        out[i][0] = p[0];
-        out[i][1] <== p[1];
+        out[i][1] = p[1];
     }
+
+    return out;
 }

circuits/mimc.circom

@@ -137,18 +137,19 @@ template MiMC7(nrounds) {
 
 template MultiMiMC7(nInputs, nRounds) {
     signal input in[nInputs];
+    signal input k;
     signal output out;
+    signal r[nInputs +1];
 
     component mims[nInputs];
+
+    r[0] <== k;
     for (var i=0; i<nInputs; i++) {
         mims[i] = MiMC7(nRounds);
-        if (i==0) {
+        mims[i].x_in <== in[i];
-            mims[i].x_in <== 15021630795539610737508582392395901278341266317943626182700664337106830745361;
+        mims[i].k <== r[i];
-        } else {
+        r[i+1] <== r[i] + in[i] + mims[i].out;
-            mims[i].x_in <== mims[i-1].out;
-        }
-        mims[i].k <== in[i];
     }
 
-    out <== mims[nInputs-1].out;
+    out <== r[nInputs];
 }

circuits/mimcsponge.circom

@@ -0,0 +1,290 @@
+// implements MiMC-2n/n as hash using a sponge construction.
+// log_5(21888242871839275222246405745257275088548364400416034343698204186575808495617) ~= 110
+// => nRounds should be 220
+template MiMCSponge(nInputs, nOutputs) {
+  signal input ins[nInputs];
+  signal input k;
+  signal output outs[nOutputs];
+
+  var nRounds = 220;
+
+  // S = R||C
+  component S[nInputs + nOutputs - 1];
+
+  for (var i = 0; i < nInputs; i++) {
+    S[i] = MiMCFeistel(nRounds);
+    S[i].k <== k;
+    if (i == 0) {
+      S[i].xL_in <== ins[0];
+      S[i].xR_in <== 0;
+    } else {
+      S[i].xL_in <== S[i-1].xL_out + ins[i];
+      S[i].xR_in <== S[i-1].xR_out;
+    }
+  }
+
+  outs[0] <== S[nInputs - 1].xL_out;
+
+  for (var i = 0; i < nOutputs - 1; i++) {
+    S[nInputs + i] = MiMCFeistel(nRounds);
+    S[nInputs + i].k <== k;
+    S[nInputs + i].xL_in <== S[nInputs + i - 1].xL_out;
+    S[nInputs + i].xR_in <== S[nInputs + i - 1].xR_out;
+    outs[i + 1] <== S[nInputs + i].xL_out;
+  }
+}
+
+template MiMCFeistel(nrounds) {
+    signal input xL_in;
+    signal input xR_in;
+    signal input k;
+    signal output xL_out;
+    signal output xR_out;
+
+    // doesn't contain the first and last round constants, which are always zero
+    var c_partial = [
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+      2119542016932434047340813757208803962484943912710204325088879681995922344971
+    ];
+
+    var t;
+    signal t2[nrounds];
+    signal t4[nrounds];
+    signal xL[nrounds-1];
+    signal xR[nrounds-1];
+
+    var c;
+    for (var i=0; i<nrounds; i++) {
+        if ((i == 0) || (i == nrounds - 1)) {
+          c = 0;
+        } else {
+          c = c_partial[i - 1];
+        }
+        t = (i==0) ? k+xL_in : k + xL[i-1] + c;
+        t2[i] <== t*t;
+        t4[i] <== t2[i]*t2[i];
+        if (i<nrounds-1) {
+          xL[i] <== ((i==0) ? xR_in : xR[i-1]) + t4[i]*t;
+          xR[i] <== (i==0) ? xL_in : xL[i-1];
+        } else {
+          xR_out <== xR[i-1] + t4[i]*t;
+          xL_out <== xL[i-1];
+        }
+    }
+}

circuits/montgomery.circom

@@ -85,6 +85,7 @@ template Montgomery2Edwards() {
 
  */
 
+/* in1 must be != in2 */
 template MontgomeryAdd() {
     signal input in1[2];
     signal input in2[2];

circuits/multiplexer.circom

@@ -90,12 +90,17 @@ template Decoder(w) {
 }
 
 
-template Multiplexor(wIn, nIn) {
+template Multiplexer(wIn, nIn) {
     signal input inp[nIn][wIn];
     signal input sel;
     signal output out[wIn];
-    component Decoder(nIn) dec;
+    component dec = Decoder(nIn);
-    component EscalarProduct(nIn) ep[wIn];
+    component ep[wIn];
+
+    for (var k=0; k<wIn; k++) {
+        ep[k] = EscalarProduct(nIn);
+    }
+
     sel ==> dec.inp;
     for (var j=0; j<wIn; j++) {
         for (var k=0; k<nIn; k++) {
@@ -106,7 +111,3 @@ template Multiplexor(wIn, nIn) {
     }
     dec.success === 1;
 }
-
-component Multiplexor(8,3) main;
-
-

circuits/mux1.circom

@@ -0,0 +1,47 @@
+/*
+    Copyright 2018 0KIMS association.
+
+    This file is part of circom (Zero Knowledge Circuit Compiler).
+
+    circom is a free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    circom is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+    or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
+    License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with circom. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+template MultiMux1(n) {
+    signal input c[n][2];  // Constants
+    signal input s;   // Selector
+    signal output out[n];
+
+    for (var i=0; i<n; i++) {
+
+        out[i] <== (c[i][1] - c[i][0])*s + c[i][0];
+
+    }
+}
+
+template Mux1() {
+    var i;
+    signal input c[2];  // Constants
+    signal input s;   // Selector
+    signal output out;
+
+    component mux = MultiMux1(1);
+
+    for (i=0; i<2; i++) {
+        mux.c[0][i] <== c[i];
+    }
+
+    s ==> mux.s;
+
+    mux.out[0] ==> out;
+}

circuits/mux2.circom

@@ -0,0 +1,62 @@
+/*
+    Copyright 2018 0KIMS association.
+
+    This file is part of circom (Zero Knowledge Circuit Compiler).
+
+    circom is a free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    circom is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+    or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
+    License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with circom. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+template MultiMux2(n) {
+    signal input c[n][4];  // Constants
+    signal input s[2];   // Selector
+    signal output out[n];
+
+    signal a10[n];
+    signal a1[n];
+    signal a0[n];
+    signal a[n];
+
+    signal  s10;
+    s10 <== s[1] * s[0];
+
+    for (var i=0; i<n; i++) {
+
+          a10[i] <==  ( c[i][ 3]-c[i][ 2]-c[i][ 1]+c[i][ 0] ) * s10;
+           a1[i] <==  ( c[i][ 2]-c[i][ 0] ) * s[1];
+           a0[i] <==  ( c[i][ 1]-c[i][ 0] ) * s[0];
+            a[i] <==  ( c[i][ 0] )
+
+          out[i] <==  (  a10[i] +  a1[i] +  a0[i] +  a[i] );
+
+    }
+}
+
+template Mux2() {
+    var i;
+    signal input c[4];  // Constants
+    signal input s[2];   // Selector
+    signal output out;
+
+    component mux = MultiMux2(1);
+
+    for (i=0; i<4; i++) {
+        mux.c[0][i] <== c[i];
+    }
+
+    for (i=0; i<2; i++) {
+      s[i] ==> mux.s[i];
+    }
+
+    mux.out[0] ==> out;
+}

circuits/pedersen.circom

@@ -108,6 +108,7 @@ template Window4() {
 }
 
 
+/* nWindows must not exceed 50 */
 template Segment(nWindows) {
     signal input in[nWindows*4];
     signal input base[2];

circuits/poseidon.circom

@@ -0,0 +1,97 @@
+include "./poseidon_constants.circom";
+
+template Sigma() {
+    signal input in;
+    signal output out;
+
+    signal in2;
+    signal in4;
+
+    in2 <== in*in;
+    in4 <== in2*in2;
+
+    out <== in4*in;
+}
+
+template Ark(t, C, r) {
+    signal input in[t];
+    signal output out[t];
+
+    for (var i=0; i<t; i++) {
+        out[i] <== in[i] + C[i + r];
+    }
+}
+
+template Mix(t, M) {
+    signal input in[t];
+    signal output out[t];
+
+    var lc;
+    for (var i=0; i<t; i++) {
+        lc = 0;
+        for (var j=0; j<t; j++) {
+            lc += M[j][i]*in[j];
+        }
+        out[i] <== lc;
+    }
+}
+
+template Poseidon(nInputs) {
+    signal input inputs[nInputs];
+    signal output out;
+
+		// Using recommended parameters from whitepaper https://eprint.iacr.org/2019/458.pdf (table 2, table 8)
+		// Generated by https://extgit.iaik.tugraz.at/krypto/hadeshash/-/blob/master/code/calc_round_numbers.py
+		// And rounded up to nearest integer that divides by t
+    var t = nInputs + 1;
+    var nRoundsF = 8;
+    var nRoundsP = 35;
+    var C[t*(nRoundsF + nRoundsP)] = POSEIDON_C(t);
+    var M[t][t] = POSEIDON_M(t);
+
+    component ark[nRoundsF + nRoundsP - 1];
+    component sigmaF[nRoundsF - 1][t];
+    component sigmaP[nRoundsP];
+    component mix[nRoundsF + nRoundsP - 1];
+
+    var k;
+
+    for (var i=0; i<nRoundsF + nRoundsP - 1; i++) {
+        ark[i] = Ark(t, C, t*i);
+        for (var j=0; j<t; j++) {
+            if (i==0) {
+                if (j<nInputs) {
+                    ark[i].in[j] <== inputs[j];
+                } else {
+                    ark[i].in[j] <== 0;
+                }
+            } else {
+                ark[i].in[j] <== mix[i-1].out[j];
+            }
+        }
+
+        if (i < nRoundsF/2 || i >= nRoundsP + nRoundsF/2) {
+            k = i < nRoundsF/2 ? i : i - nRoundsP;
+            mix[i] = Mix(t, M);
+            for (var j=0; j<t; j++) {
+                sigmaF[k][j] = Sigma();
+                sigmaF[k][j].in <== ark[i].out[j];
+                mix[i].in[j] <== sigmaF[k][j].out;
+            }
+        } else {
+            k = i - nRoundsF/2;
+            mix[i] = Mix(t, M);
+            sigmaP[k] = Sigma();
+            sigmaP[k].in <== ark[i].out[0];
+            mix[i].in[0] <== sigmaP[k].out;
+            for (var j=1; j<t; j++) {
+                mix[i].in[j] <== ark[i].out[j];
+            }
+        }
+    }
+
+    // last round is done only for the first word, so we do it manually to save constraints
+    component lastSigmaF = Sigma();
+    lastSigmaF.in <== mix[nRoundsF + nRoundsP - 2].out[0] + C[t*(nRoundsF + nRoundsP - 1)];
+    out <== lastSigmaF.out;
+}

circuits/sha256/sha256.circom

@@ -0,0 +1,81 @@
+
+
+include "constants.circom";
+include "sha256compression.circom";
+
+template Sha256(nBits) {
+    signal input in[nBits];
+    signal output out[256];
+
+    var i;
+    var k;
+    var nBlocks;
+    var bitsLastBlock;
+
+
+    nBlocks = ((nBits + 64)\512)+1;
+
+    signal paddedIn[nBlocks*512];
+
+    for (k=0; k<nBits; k++) {
+        paddedIn[k] <== in[k];
+    }
+    paddedIn[nBits] <== 1;
+
+    for (k=nBits+1; k<nBlocks*512-64; k++) {
+        paddedIn[k] <== 0;
+    }
+
+    for (k = 0; k< 64; k++) {
+        paddedIn[nBlocks*512 - k -1] <== (nBits >> k)&1;
+    }
+
+    component ha0 = H(0);
+    component hb0 = H(1);
+    component hc0 = H(2);
+    component hd0 = H(3);
+    component he0 = H(4);
+    component hf0 = H(5);
+    component hg0 = H(6);
+    component hh0 = H(7);
+
+    component sha256compression[nBlocks];
+
+    for (i=0; i<nBlocks; i++) {
+
+        sha256compression[i] = Sha256compression() ;
+
+        if (i==0) {
+            for (k=0; k<32; k++ ) {
+                sha256compression[i].hin[0*32+k] <== ha0.out[k];
+                sha256compression[i].hin[1*32+k] <== hb0.out[k];
+                sha256compression[i].hin[2*32+k] <== hc0.out[k];
+                sha256compression[i].hin[3*32+k] <== hd0.out[k];
+                sha256compression[i].hin[4*32+k] <== he0.out[k];
+                sha256compression[i].hin[5*32+k] <== hf0.out[k];
+                sha256compression[i].hin[6*32+k] <== hg0.out[k];
+                sha256compression[i].hin[7*32+k] <== hh0.out[k];
+            }
+        } else {
+            for (k=0; k<32; k++ ) {
+                sha256compression[i].hin[32*0+k] <== sha256compression[i-1].out[32*0+31-k];
+                sha256compression[i].hin[32*1+k] <== sha256compression[i-1].out[32*1+31-k];
+                sha256compression[i].hin[32*2+k] <== sha256compression[i-1].out[32*2+31-k];
+                sha256compression[i].hin[32*3+k] <== sha256compression[i-1].out[32*3+31-k];
+                sha256compression[i].hin[32*4+k] <== sha256compression[i-1].out[32*4+31-k];
+                sha256compression[i].hin[32*5+k] <== sha256compression[i-1].out[32*5+31-k];
+                sha256compression[i].hin[32*6+k] <== sha256compression[i-1].out[32*6+31-k];
+                sha256compression[i].hin[32*7+k] <== sha256compression[i-1].out[32*7+31-k];
+            }
+        }
+
+        for (k=0; k<512; k++) {
+            sha256compression[i].inp[k] <== paddedIn[i*512+k];
+        }
+    }
+
+    for (k=0; k<256; k++) {
+        out[k] <== sha256compression[nBlocks-1].out[k];
+    }
+
+}

circuits/sha256/sha256_2.circom

@@ -17,6 +17,7 @@
     along with circom. If not, see <https://www.gnu.org/licenses/>.
 */
 
+include "constants.circom";
 include "sha256compression.circom";
 include "../bitify.circom"
 
@@ -25,6 +26,9 @@ template Sha256_2() {
     signal input b;
     signal output out;
 
+    var i;
+    var k;
+
     component bits2num = Bits2Num(216);
     component num2bits[2];
 
@@ -34,9 +38,28 @@ template Sha256_2() {
     num2bits[0].in <== a;
     num2bits[1].in <== b;
 
+
     component sha256compression = Sha256compression() ;
 
-    var i;
+    component ha0 = H(0);
+    component hb0 = H(1);
+    component hc0 = H(2);
+    component hd0 = H(3);
+    component he0 = H(4);
+    component hf0 = H(5);
+    component hg0 = H(6);
+    component hh0 = H(7);
+
+    for (k=0; k<32; k++ ) {
+        sha256compression.hin[0*32+k] <== ha0.out[k];
+        sha256compression.hin[1*32+k] <== hb0.out[k];
+        sha256compression.hin[2*32+k] <== hc0.out[k];
+        sha256compression.hin[3*32+k] <== hd0.out[k];
+        sha256compression.hin[4*32+k] <== he0.out[k];
+        sha256compression.hin[5*32+k] <== hf0.out[k];
+        sha256compression.hin[6*32+k] <== hg0.out[k];
+        sha256compression.hin[7*32+k] <== hh0.out[k];
+    }
 
     for (i=0; i<216; i++) {
         sha256compression.inp[i] <== num2bits[0].out[215-i];

circuits/sha256/sha256compression.circom

@@ -24,6 +24,7 @@ include "../binsum.circom";
 include "sigmaplus.circom";
 
 template Sha256compression() {
+    signal input hin[256];
     signal input inp[512];
     signal output out[256];
     signal a[65][32];
@@ -44,15 +45,6 @@ template Sha256compression() {
     component ct_k[64];
     for (i=0; i<64; i++) ct_k[i] = K(i);
 
-    component ha0 = H(0);
-    component hb0 = H(1);
-    component hc0 = H(2);
-    component hd0 = H(3);
-    component he0 = H(4);
-    component hf0 = H(5);
-    component hg0 = H(6);
-    component hh0 = H(7);
-
     component t1[64];
     for (i=0; i<64; i++) t1[i] = T1();
 
@@ -88,14 +80,14 @@ template Sha256compression() {
     }
 
     for (k=0; k<32; k++ ) {
-        a[0][k] <== ha0.out[k]
+        a[0][k] <== hin[k];
-        b[0][k] <== hb0.out[k]
+        b[0][k] <== hin[32*1 + k];
-        c[0][k] <== hc0.out[k]
+        c[0][k] <== hin[32*2 + k];
-        d[0][k] <== hd0.out[k]
+        d[0][k] <== hin[32*3 + k];
-        e[0][k] <== he0.out[k]
+        e[0][k] <== hin[32*4 + k];
-        f[0][k] <== hf0.out[k]
+        f[0][k] <== hin[32*5 + k];
-        g[0][k] <== hg0.out[k]
+        g[0][k] <== hin[32*6 + k];
-        h[0][k] <== hh0.out[k]
+        h[0][k] <== hin[32*7 + k];
     }
 
     for (t = 0; t<64; t++) {
@@ -133,21 +125,21 @@ template Sha256compression() {
     }
 
     for (k=0; k<32; k++) {
-        fsum[0].in[0][k] <==  ha0.out[k];
+        fsum[0].in[0][k] <==  hin[32*0+k];
         fsum[0].in[1][k] <==  a[64][k];
-        fsum[1].in[0][k] <==  hb0.out[k];
+        fsum[1].in[0][k] <==  hin[32*1+k];
         fsum[1].in[1][k] <==  b[64][k];
-        fsum[2].in[0][k] <==  hc0.out[k];
+        fsum[2].in[0][k] <==  hin[32*2+k];
         fsum[2].in[1][k] <==  c[64][k];
-        fsum[3].in[0][k] <==  hd0.out[k];
+        fsum[3].in[0][k] <==  hin[32*3+k];
         fsum[3].in[1][k] <==  d[64][k];
-        fsum[4].in[0][k] <==  he0.out[k];
+        fsum[4].in[0][k] <==  hin[32*4+k];
         fsum[4].in[1][k] <==  e[64][k];
-        fsum[5].in[0][k] <==  hf0.out[k];
+        fsum[5].in[0][k] <==  hin[32*5+k];
         fsum[5].in[1][k] <==  f[64][k];
-        fsum[6].in[0][k] <==  hg0.out[k];
+        fsum[6].in[0][k] <==  hin[32*6+k];
         fsum[6].in[1][k] <==  g[64][k];
-        fsum[7].in[0][k] <==  hh0.out[k];
+        fsum[7].in[0][k] <==  hin[32*7+k];
         fsum[7].in[1][k] <==  h[64][k];
     }
 

circuits/smt/smthash_mimc.circom

@@ -29,19 +29,12 @@ template SMTHash1() {
     signal input value;
     signal output out;
 
-    component h1 = MiMC7(91);   // Constant
+    component h = MultiMiMC7(2, 91);   // Constant
-    h1.x_in <== 15021630795539610737508582392395901278341266317943626182700664337106830745361;
+    h.in[0] <== key;
-    h1.k <== 1;
+    h.in[1] <== value;
+    h.k <== 1;
 
-    component h2 = MiMC7(91);
+    out <== h.out;
-    h2.x_in <== h1.out;
-    h2.k <== key;
-
-    component h3 = MiMC7(91);
-    h3.x_in <== h2.out;
-    h3.k <== value;
-
-    out <== h3.out;
 }
 
 /*
@@ -55,13 +48,10 @@ template SMTHash2() {
     signal input R;
     signal output out;
 
-    component h1 = MiMC7(91);
+    component h = MultiMiMC7(2, 91);   // Constant
-    h1.x_in <== 15021630795539610737508582392395901278341266317943626182700664337106830745361;
+    h.in[0] <== L;
-    h1.k <== L;
+    h.in[1] <== R;
+    h.k <== 0;
 
-    component h2 = MiMC7(91);
+    out <== h.out;
-    h2.x_in <== h1.out;
-    h2.k <== R;
-
-    out <== h2.out;
 }

circuits/smt/smthash_poseidon.circom

@@ -0,0 +1,56 @@
+/*
+    Copyright 2018 0KIMS association.
+
+    This file is part of circom (Zero Knowledge Circuit Compiler).
+
+    circom is a free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    circom is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+    or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
+    License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with circom. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+include "../poseidon.circom";
+
+
+/*
+    Hash1 = H(1 | key | value)
+ */
+
+template SMTHash1() {
+    signal input key;
+    signal input value;
+    signal output out;
+
+    component h = Poseidon(3);   // Constant
+    h.inputs[0] <== key;
+    h.inputs[1] <== value;
+    h.inputs[2] <== 1;
+
+    out <== h.out;
+}
+
+/*
+    This component is used to create the 2 nodes.
+
+    Hash2 = H(Hl | Hr)
+ */
+
+template SMTHash2() {
+    signal input L;
+    signal input R;
+    signal output out;
+
+    component h = Poseidon(2);   // Constant
+    h.inputs[0] <== L;
+    h.inputs[1] <== R;
+
+    out <== h.out;
+}

circuits/smt/smtprocessor.circom

@@ -135,7 +135,7 @@ include "../switcher.circom";
 include "smtlevins.circom";
 include "smtprocessorlevel.circom";
 include "smtprocessorsm.circom";
-include "smthash.circom";
+include "smthash_poseidon.circom";
 
 template SMTProcessor(nLevels) {
     signal input oldRoot;

circuits/smt/smtverifier.circom

@@ -35,7 +35,7 @@ include "../switcher.circom";
 include "smtlevins.circom";
 include "smtverifierlevel.circom";
 include "smtverifiersm.circom";
-include "smthash.circom";
+include "smthash_poseidon.circom";
 
 template SMTVerifier(nLevels) {
     signal input enabled;

index.js

@@ -1,4 +1,9 @@
 exports.smt = require("./src/smt");
 exports.eddsa = require("./src/eddsa");
 exports.mimc7 = require("./src/mimc7");
+exports.mimcsponge = require("./src/mimcsponge");
 exports.babyJub = require("./src/babyjub");
+exports.pedersenHash = require("./src/pedersenHash");
+exports.SMT = require("./src/smt").SMT;
+exports.SMTMemDB = require("./src/smt_memdb");
+exports.poseidon = require("./src/poseidon");

package.json

@@ -1,37 +1,39 @@
 {
-  "name": "circomlib",
+    "name": "@tornado/circomlib",
-  "version": "0.0.6",
+    "version": "0.0.21",
-  "description": "Basic circuits library for Circom",
+    "description": "Basic circuits library for Circom",
-  "main": "index.js",
+    "main": "index.js",
-  "directories": {
+    "directories": {
-    "test": "test"
+        "test": "test"
-  },
+    },
-  "scripts": {
+    "scripts": {
-    "test": "mocha --max-old-space-size=4000"
+        "test": "mocha --max-old-space-size=4000"
-  },
+    },
-  "keywords": [
+    "keywords": [
-    "pedersen",
+        "pedersen",
-    "hash",
+        "hash",
-    "ethereum",
+        "ethereum",
-    "circuit",
+        "circuit",
-    "circom",
+        "circom",
-    "zksnark"
+        "zksnark"
-  ],
+    ],
-  "repository": {
+    "repository": {
-    "type": "git",
+        "type": "git",
-    "url": "https://github.com/iden3/circomlib.git"
+        "url": "https://git.tornado.ws/tornado-packages/circomlib.git"
-  },
+    },
-  "author": "0Kims",
+    "author": "0Kims",
-  "license": "GPL-3.0",
+    "license": "GPL-3.0",
-  "dependencies": {
+    "dependencies": {
-    "blake-hash": "^1.1.0",
+        "blake-hash": "^1.1.0",
-    "snarkjs": "0.1.11",
+        "blake2b": "^2.1.3",
-    "web3": "^1.0.0-beta.36"
+        "@tornado/snarkjs": "0.1.20",
-  },
+        "typedarray-to-buffer": "^3.1.5",
-  "devDependencies": {
+        "web3": "^1.2.11"
-    "circom": "0.0.24",
+    },
-    "eslint-plugin-mocha": "^5.2.0",
+    "devDependencies": {
-    "ganache-cli": "^6.2.3",
+        "circom": "0.0.35",
-    "mocha": "^5.2.0"
+        "eslint-plugin-mocha": "^5.2.0",
-  }
+        "ganache-cli": "^6.4.4",
+        "mocha": "^5.2.0"
+    }
 }

src/babyjub.js

@@ -1,5 +1,5 @@
-const bn128 = require("snarkjs").bn128;
+const bn128 = require("@tornado/snarkjs").bn128;
-const bigInt = require("snarkjs").bigInt;
+const bigInt = require("@tornado/snarkjs").bigInt;
 
 exports.addPoint = addPoint;
 exports.mulPointEscalar = mulPointEscalar;
@@ -7,32 +7,51 @@ exports.inCurve = inCurve;
 exports.inSubgroup = inSubgroup;
 exports.packPoint = packPoint;
 exports.unpackPoint = unpackPoint;
+exports.Generator = [
+    bigInt("995203441582195749578291179787384436505546430278305826713579947235728471134"),
+    bigInt("5472060717959818805561601436314318772137091100104008585924551046643952123905"),
+];
 exports.Base8 = [
-    bigInt("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
+    bigInt("5299619240641551281634865583518297030282874472190772894086521144482721001553"),
-    bigInt("2626589144620713026669568689430873010625803728049924121243784502389097019475")
+    bigInt("16950150798460657717958625567821834550301663161624707787222815936182638968203"),
 ];
 exports.order = bigInt("21888242871839275222246405745257275088614511777268538073601725287587578984328");
 exports.subOrder = exports.order.shr(3);
 exports.p = bn128.r;
+exports.A = bigInt("168700");
+exports.D = bigInt("168696");
 
-
+function addPoint(a, b) {
-function addPoint(a,b) {
     const q = bn128.r;
-    const cta = bigInt("168700");
-    const d = bigInt("168696");
 
     const res = [];
-    res[0] = bigInt((a[0]*b[1] + b[0]*a[1]) *  bigInt(bigInt("1") + d*a[0]*b[0]*a[1]*b[1]).inverse(q)).affine(q);
+
+    /* does the equivalent of:
+     res[0] = bigInt((a[0]*b[1] + b[0]*a[1]) *  bigInt(bigInt("1") + d*a[0]*b[0]*a[1]*b[1]).inverse(q)).affine(q);
     res[1] = bigInt((a[1]*b[1] - cta*a[0]*b[0]) * bigInt(bigInt("1") - d*a[0]*b[0]*a[1]*b[1]).inverse(q)).affine(q);
+    */
+    res[0] = bigInt(
+        bigInt(a[0])
+            .mul(b[1])
+            .add(bigInt(b[0]).mul(a[1]))
+            .mul(bigInt(bigInt("1").add(exports.D.mul(a[0]).mul(b[0]).mul(a[1]).mul(b[1]))).inverse(q))
+    ).affine(q);
+    res[1] = bigInt(
+        bigInt(a[1])
+            .mul(b[1])
+            .sub(exports.A.mul(a[0]).mul(b[0]))
+            .mul(bigInt(bigInt("1").sub(exports.D.mul(a[0]).mul(b[0]).mul(a[1]).mul(b[1]))).inverse(q))
+    ).affine(q);
+
     return res;
 }
 
 function mulPointEscalar(base, e) {
-    let res = [bigInt("0"),bigInt("1")];
+    let res = [bigInt("0"), bigInt("1")];
     let rem = bigInt(e);
     let exp = base;
 
-    while (! rem.isZero()) {
+    while (!rem.isZero()) {
         if (rem.isOdd()) {
             res = addPoint(res, exp);
         }
@@ -45,22 +64,17 @@ function mulPointEscalar(base, e) {
 
 function inSubgroup(P) {
     if (!inCurve(P)) return false;
-    const res= mulPointEscalar(P, exports.subOrder);
+    const res = mulPointEscalar(P, exports.subOrder);
-    return (res[0].equals(bigInt(0))) && (res[1].equals(bigInt(1)));
+    return res[0].equals(bigInt(0)) && res[1].equals(bigInt(1));
 }
 
 function inCurve(P) {
     const F = bn128.Fr;
 
-    const a = bigInt("168700");
-    const d = bigInt("168696");
-
     const x2 = F.square(P[0]);
     const y2 = F.square(P[1]);
 
-    if (!F.equals(
+    if (!F.equals(F.add(F.mul(exports.A, x2), y2), F.add(F.one, F.mul(F.mul(x2, y2), exports.D)))) return false;
-        F.add(F.mul(a, x2), y2),
-        F.add(F.one, F.mul(F.mul(x2, y2), d)))) return false;
 
     return true;
 }
@@ -81,19 +95,14 @@ function unpackPoint(_buff) {
     const P = new Array(2);
     if (buff[31] & 0x80) {
         sign = true;
-        buff[31] = buff[31] & 0x7F;
+        buff[31] = buff[31] & 0x7f;
     }
     P[1] = bigInt.leBuff2int(buff);
     if (P[1].greaterOrEquals(exports.p)) return null;
 
-    const a = bigInt("168700");
-    const d = bigInt("168696");
-
     const y2 = F.square(P[1]);
 
-    let x = F.sqrt(F.div(
+    let x = F.sqrt(F.div(F.sub(F.one, y2), F.sub(exports.A, F.mul(exports.D, y2))));
-        F.sub(F.one, y2),
-        F.sub(a, F.mul(d, y2))));
 
     if (x == null) return null;
 

src/eddsa.js

@@ -1,29 +1,34 @@
 const createBlakeHash = require("blake-hash");
-const bigInt = require("snarkjs").bigInt;
+const bigInt = require("@tornado/snarkjs").bigInt;
 const babyJub = require("./babyjub");
 const pedersenHash = require("./pedersenHash").hash;
 const mimc7 = require("./mimc7");
+const poseidon = require("./poseidon.js");
+const mimcsponge = require("./mimcsponge");
 
-exports.prv2pub= prv2pub;
+exports.prv2pub = prv2pub;
 exports.sign = sign;
 exports.signMiMC = signMiMC;
+exports.signPoseidon = signPoseidon;
+exports.signMiMCSponge = signMiMCSponge;
 exports.verify = verify;
 exports.verifyMiMC = verifyMiMC;
+exports.verifyPoseidon = verifyPoseidon;
+exports.verifyMiMCSponge = verifyMiMCSponge;
 exports.packSignature = packSignature;
 exports.unpackSignature = unpackSignature;
 exports.pruneBuffer = pruneBuffer;
 
-
 function pruneBuffer(_buff) {
     const buff = Buffer.from(_buff);
-    buff[0] = buff[0] & 0xF8;
+    buff[0] = buff[0] & 0xf8;
-    buff[31] = buff[31] & 0x7F;
+    buff[31] = buff[31] & 0x7f;
     buff[31] = buff[31] | 0x40;
     return buff;
 }
 
 function prv2pub(prv) {
-    const sBuff = pruneBuffer(createBlakeHash("blake512").update(prv).digest().slice(0,32));
+    const sBuff = pruneBuffer(createBlakeHash("blake512").update(prv).digest().slice(0, 32));
     let s = bigInt.leBuff2int(sBuff);
     const A = babyJub.mulPointEscalar(babyJub.Base8, s.shr(3));
     return A;
@@ -31,11 +36,13 @@ function prv2pub(prv) {
 
 function sign(prv, msg) {
     const h1 = createBlakeHash("blake512").update(prv).digest();
-    const sBuff = pruneBuffer(h1.slice(0,32));
+    const sBuff = pruneBuffer(h1.slice(0, 32));
     const s = bigInt.leBuff2int(sBuff);
     const A = babyJub.mulPointEscalar(babyJub.Base8, s.shr(3));
 
-    const rBuff = createBlakeHash("blake512").update(Buffer.concat([h1.slice(32,64), msg])).digest();
+    const rBuff = createBlakeHash("blake512")
+        .update(Buffer.concat([h1.slice(32, 64), msg]))
+        .digest();
     let r = bigInt.leBuff2int(rBuff);
     r = r.mod(babyJub.subOrder);
     const R8 = babyJub.mulPointEscalar(babyJub.Base8, r);
@@ -46,18 +53,20 @@ function sign(prv, msg) {
     const S = r.add(hm.mul(s)).mod(babyJub.subOrder);
     return {
         R8: R8,
-        S: S
+        S: S,
     };
 }
 
 function signMiMC(prv, msg) {
     const h1 = createBlakeHash("blake512").update(prv).digest();
-    const sBuff = pruneBuffer(h1.slice(0,32));
+    const sBuff = pruneBuffer(h1.slice(0, 32));
     const s = bigInt.leBuff2int(sBuff);
     const A = babyJub.mulPointEscalar(babyJub.Base8, s.shr(3));
 
     const msgBuff = bigInt.leInt2Buff(msg, 32);
-    const rBuff = createBlakeHash("blake512").update(Buffer.concat([h1.slice(32,64), msgBuff])).digest();
+    const rBuff = createBlakeHash("blake512")
+        .update(Buffer.concat([h1.slice(32, 64), msgBuff]))
+        .digest();
     let r = bigInt.leBuff2int(rBuff);
     r = r.mod(babyJub.subOrder);
     const R8 = babyJub.mulPointEscalar(babyJub.Base8, r);
@@ -65,7 +74,49 @@ function signMiMC(prv, msg) {
     const S = r.add(hm.mul(s)).mod(babyJub.subOrder);
     return {
         R8: R8,
-        S: S
+        S: S,
+    };
+}
+
+function signMiMCSponge(prv, msg) {
+    const h1 = createBlakeHash("blake512").update(prv).digest();
+    const sBuff = pruneBuffer(h1.slice(0, 32));
+    const s = bigInt.leBuff2int(sBuff);
+    const A = babyJub.mulPointEscalar(babyJub.Base8, s.shr(3));
+
+    const msgBuff = bigInt.leInt2Buff(msg, 32);
+    const rBuff = createBlakeHash("blake512")
+        .update(Buffer.concat([h1.slice(32, 64), msgBuff]))
+        .digest();
+    let r = bigInt.leBuff2int(rBuff);
+    r = r.mod(babyJub.subOrder);
+    const R8 = babyJub.mulPointEscalar(babyJub.Base8, r);
+    const hm = mimcsponge.multiHash([R8[0], R8[1], A[0], A[1], msg]);
+    const S = r.add(hm.mul(s)).mod(babyJub.subOrder);
+    return {
+        R8: R8,
+        S: S,
+    };
+}
+
+function signPoseidon(prv, msg) {
+    const h1 = createBlakeHash("blake512").update(prv).digest();
+    const sBuff = pruneBuffer(h1.slice(0, 32));
+    const s = bigInt.leBuff2int(sBuff);
+    const A = babyJub.mulPointEscalar(babyJub.Base8, s.shr(3));
+
+    const msgBuff = bigInt.leInt2Buff(msg, 32);
+    const rBuff = createBlakeHash("blake512")
+        .update(Buffer.concat([h1.slice(32, 64), msgBuff]))
+        .digest();
+    let r = bigInt.leBuff2int(rBuff);
+    r = r.mod(babyJub.subOrder);
+    const R8 = babyJub.mulPointEscalar(babyJub.Base8, r);
+    const hm = poseidon([R8[0], R8[1], A[0], A[1], msg]);
+    const S = r.add(hm.mul(s)).mod(babyJub.subOrder);
+    return {
+        R8: R8,
+        S: S,
     };
 }
 
@@ -73,12 +124,12 @@ function verify(msg, sig, A) {
     // Check parameters
     if (typeof sig != "object") return false;
     if (!Array.isArray(sig.R8)) return false;
-    if (sig.R8.length!= 2) return false;
+    if (sig.R8.length != 2) return false;
     if (!babyJub.inCurve(sig.R8)) return false;
     if (!Array.isArray(A)) return false;
-    if (A.length!= 2) return false;
+    if (A.length != 2) return false;
     if (!babyJub.inCurve(A)) return false;
-    if (sig.S>= babyJub.subOrder) return false;
+    if (sig.S >= babyJub.subOrder) return false;
 
     const R8p = babyJub.packPoint(sig.R8);
     const Ap = babyJub.packPoint(A);
@@ -98,12 +149,12 @@ function verifyMiMC(msg, sig, A) {
     // Check parameters
     if (typeof sig != "object") return false;
     if (!Array.isArray(sig.R8)) return false;
-    if (sig.R8.length!= 2) return false;
+    if (sig.R8.length != 2) return false;
     if (!babyJub.inCurve(sig.R8)) return false;
     if (!Array.isArray(A)) return false;
-    if (A.length!= 2) return false;
+    if (A.length != 2) return false;
     if (!babyJub.inCurve(A)) return false;
-    if (sig.S>= babyJub.subOrder) return false;
+    if (sig.S >= babyJub.subOrder) return false;
 
     const hm = mimc7.multiHash([sig.R8[0], sig.R8[1], A[0], A[1], msg]);
 
@@ -116,6 +167,50 @@ function verifyMiMC(msg, sig, A) {
     return true;
 }
 
+function verifyPoseidon(msg, sig, A) {
+    // Check parameters
+    if (typeof sig != "object") return false;
+    if (!Array.isArray(sig.R8)) return false;
+    if (sig.R8.length != 2) return false;
+    if (!babyJub.inCurve(sig.R8)) return false;
+    if (!Array.isArray(A)) return false;
+    if (A.length != 2) return false;
+    if (!babyJub.inCurve(A)) return false;
+    if (sig.S >= babyJub.subOrder) return false;
+
+    const hm = poseidon([sig.R8[0], sig.R8[1], A[0], A[1], msg]);
+
+    const Pleft = babyJub.mulPointEscalar(babyJub.Base8, sig.S);
+    let Pright = babyJub.mulPointEscalar(A, hm.mul(bigInt("8")));
+    Pright = babyJub.addPoint(sig.R8, Pright);
+
+    if (!Pleft[0].equals(Pright[0])) return false;
+    if (!Pleft[1].equals(Pright[1])) return false;
+    return true;
+}
+
+function verifyMiMCSponge(msg, sig, A) {
+    // Check parameters
+    if (typeof sig != "object") return false;
+    if (!Array.isArray(sig.R8)) return false;
+    if (sig.R8.length != 2) return false;
+    if (!babyJub.inCurve(sig.R8)) return false;
+    if (!Array.isArray(A)) return false;
+    if (A.length != 2) return false;
+    if (!babyJub.inCurve(A)) return false;
+    if (sig.S >= babyJub.subOrder) return false;
+
+    const hm = mimcsponge.multiHash([sig.R8[0], sig.R8[1], A[0], A[1], msg]);
+
+    const Pleft = babyJub.mulPointEscalar(babyJub.Base8, sig.S);
+    let Pright = babyJub.mulPointEscalar(A, hm.mul(bigInt("8")));
+    Pright = babyJub.addPoint(sig.R8, Pright);
+
+    if (!Pleft[0].equals(Pright[0])) return false;
+    if (!Pleft[1].equals(Pright[1])) return false;
+    return true;
+}
+
 function packSignature(sig) {
     const R8p = babyJub.packPoint(sig.R8);
     const Sp = bigInt.leInt2Buff(sig.S, 32);
@@ -124,9 +219,7 @@ function packSignature(sig) {
 
 function unpackSignature(sigBuff) {
     return {
-        R8: babyJub.unpackPoint(sigBuff.slice(0,32)),
+        R8: babyJub.unpackPoint(sigBuff.slice(0, 32)),
-        S: bigInt.leBuff2int(sigBuff.slice(32,64))
+        S: bigInt.leBuff2int(sigBuff.slice(32, 64)),
     };
 }
-
-

src/evmasm.js

@@ -127,12 +127,16 @@ class Contract {
 
 
     jmp(label)  {
-        this._pushLabel(label);
+        if (typeof label !== "undefined") {
+            this._pushLabel(label);
+        }
         this.code.push(0x56);
     }
 
     jmpi(label)  {
-        this._pushLabel(label);
+        if (typeof label !== "undefined") {
+            this._pushLabel(label);
+        }
         this.code.push(0x57);
     }
 
@@ -150,6 +154,17 @@ class Contract {
     }
 
     push(data) {
+        if (typeof data === "number") {
+            let isNeg;
+            if (data<0) {
+                isNeg = true;
+                data = -data;
+            }
+            data = data.toString(16);
+            if (data.length % 2 == 1) data = "0" + data;
+            data = "0x" + data;
+            if (isNeg) data = "-"+data;
+        }
         const d = Web3Utils.hexToBytes(Web3Utils.toHex(data));
         if (d.length == 0 || d.length > 32) {
             throw new Error("Assertion failed");

src/g2_gencontract.js

@@ -0,0 +1,572 @@
+// Copyright (c) 2018 Jordi Baylina
+// License: LGPL-3.0+
+//
+
+const Contract = require("./evmasm");
+const G2 = require("@tornado/snarkjs").bn128.G2;
+const bigInt = require("@tornado/snarkjs").bigInt;
+
+function toHex256(a) {
+    let S = a.toString(16);
+    while (S.length < 64) S = "0" + S;
+    return "0x" + S;
+}
+
+function createCode(P, w) {
+    const C = new Contract();
+
+    const NPOINTS = 1 << (w - 1);
+
+    const VAR_POS = C.allocMem(32);
+    const VAR_POINTS = C.allocMem(NPOINTS * 4 * 32);
+    const savedP = C.allocMem(32);
+    const savedZ3 = C.allocMem(32);
+
+    // Check selector
+    C.push("0x0100000000000000000000000000000000000000000000000000000000");
+    C.push(0);
+    C.calldataload();
+    C.div();
+    C.push("b65c7c74"); // mulexp(uint256)
+    C.eq();
+    C.jmpi("start");
+    C.invalid();
+
+    C.label("start");
+
+    storeVals();
+
+    C.push(Math.floor(255 / w) * w); // pos := 255
+    C.push(VAR_POS);
+    C.mstore();
+
+    C.push("21888242871839275222246405745257275088696311157297823662689037894645226208583");
+    C.push(0);
+    C.push(0);
+    C.push(0);
+    C.push(0);
+    C.push(0);
+    C.push(0);
+
+    C.label("begin_loop"); // ACC_X ACC_Y ACC_Z q
+
+    C.internalCall("double");
+
+    // g = (e>>pos)&MASK
+    C.push(4);
+    C.calldataload(); // e ACC_X ACC_Y ACC_Z q
+
+    C.push(VAR_POS);
+    C.mload(); // pos e ACC_X ACC_Y ACC_Z q
+    C.shr();
+
+    C.push(NPOINTS - 1);
+    C.and(); // g ACC_X ACC_Y ACC_Z q
+
+    C.internalCall("add"); // acc_x acc_y acc_z
+
+    C.push(VAR_POS);
+    C.mload(); // pos acc_x acc_y acc_z
+    C.dup(0); // pos pos acc_x acc_y acc_z
+    C.push(0); // 0 pos pos acc_x acc_y acc_z
+    C.eq(); // eq pos acc_x acc_y acc_z
+    C.jmpi("after_loop"); // pos acc_x acc_y acc_z
+    C.push(w); // 5 pos acc_x acc_y acc_z
+    C.sub(); // pos acc_x acc_y acc_z
+    C.push(VAR_POS);
+    C.mstore(); // acc_x acc_y acc_z
+    C.jmp("begin_loop");
+    C.label("after_loop"); // pos acc_x acc_y acc_z
+    C.pop(); // acc_x acc_y acc_z
+
+    C.internalCall("affine"); // acc_x acc_y
+
+    C.push(0);
+    C.mstore();
+    C.push(20);
+    C.mstore();
+    C.push(40);
+    C.mstore();
+    C.push(60);
+    C.mstore();
+
+    C.push("0x80");
+    C.push("0x00");
+    C.return();
+
+    double();
+    addPoint();
+    affine();
+
+    return C.createTxData();
+
+    function add(a, b, q) {
+        C.dup(q);
+        C.dup(a + 1 + 1);
+        C.dup(b + 1 + 2);
+        C.addmod();
+        C.dup(q + 1);
+        C.dup(a + 2);
+        C.dup(b + 3);
+        C.addmod();
+    }
+
+    function sub(a, b, q) {
+        C.dup(q); // q
+        C.dup(a + 1 + 1); // ai q
+        C.dub(q + 2); // q ai q
+        C.dup(b + 1 + 3); // bi q ai q
+        C.sub(); // -bi ai q
+        C.addmod(); // ci
+        C.dup(q + 1); // q ci
+        C.dup(a + 2); // ar q ci
+        C.dup(q + 3); // q ar q ci
+        C.dup(b + 4); // br q ar q ci
+        C.sub(); // -br ar q ci
+        C.addmod(); // cr ci
+    }
+
+    function mul(a, b, q) {
+        C.dup(q); //  q
+        C.dup(q + 1); //  q q
+        C.dup(a + 2); //  ar q q
+        C.dup(b + 1 + 3); //  bi ar q q
+        C.mulmod(); //  ci1 q
+        C.dup(q + 2); //  q ci1 q
+        C.dup(a + 1 + 3); //  ai q ci1 q
+        C.dup(b + 4); //  ar ai q ci1 q
+        C.mulmod(); //  ci2 ci1 q
+        C.addmod(); //  ci
+        C.dup(q + 1); //  q ci
+        C.dup(q + 2); //  q q ci
+        C.dup(q + 3); //  q q q ci
+        C.dup(a + 1 + 4); //  ai q q ci
+        C.dup(b + 1 + 5); //  bi ai q q ci
+        C.mulmod(); //  cr2 q q ci
+        C.sub(); //  -cr2 q ci
+        C.dup(q + 3); //  q -cr2 q ci
+        C.dup(a + 4); //  ar q -cr2 q ci
+        C.dup(b + 5); //  br ar q -cr2 q ci
+        C.mulmod(); //  cr1 -cr2 q ci
+        C.addmod(); //  cr ci
+    }
+
+    function square(a, q) {
+        C.dup(q); //  q
+        C.dup(q + 1); //  q q
+        C.dup(a + 2); //  ar q q
+        C.dup(a + 1 + 3); //  ai ar q q
+        C.mulmod(); //  arai q
+        C.dup(0); //  arai arai q
+        C.addmod(); //  ci
+        C.dup(q + 1); //  q ci
+        C.dup(q + 2); //  q q ci
+        C.dup(q + 3); //  q q q ci
+        C.dup(a + 1 + 4); //  ai q q ci
+        C.dup(a + 1 + 5); //  ai ai q q ci
+        C.mulmod(); //  cr2 q q ci
+        C.sub(); //  -cr2 q ci
+        C.dup(q + 3); //  q -cr2 q ci
+        C.dup(a + 4); //  ar q -cr2 q ci
+        C.dup(a + 5); //  br ar q -cr2 q ci
+        C.mulmod(); //  cr1 -cr2 q ci
+        C.addmod(); //  cr ci
+    }
+
+    function add1(a, q) {
+        C.dup(a + 1); // im
+        C.dup(1 + q); //  q
+        C.dup(2 + a); //  re q im
+        C.push(1); // 1 re q im
+        C.addmod();
+    }
+
+    function cmp(a, b) {
+        C.dup(a);
+        C.dup(b);
+        C.eq();
+        C.dup(a + 1);
+        C.dup(a + 1);
+        C.and();
+    }
+
+    function rm(a) {
+        if (a > 0) C.swap(a);
+        C.pop();
+        if (a > 0) C.swap(a);
+        C.pop();
+    }
+
+    function double() {
+        C.label("double"); // xR, xI,    yR, yI,   zR zI, q
+
+        C.dup(4);
+        C.iszero();
+        C.dup(6);
+        C.iszero();
+        C.and();
+        C.jumpi("enddouble"); // X Y Z q
+
+        // Z3 = 2*Y*Z // Remove Z
+        mul(2, 4, 6); // yz X Y Z q
+        rm(6); // X Y yz q
+
+        add(4, 4, 6); // 2yz X Y yz q
+        rm(6); // X Y Z3 q
+
+        // A = X^2
+        square(0, 6); // A X Y Z3 q
+
+        // B = Y^2  // Remove Y
+        square(4, 8); // B A X Y Z3 q
+        rm(6); // A X B Z3 q
+
+        // C = B^2
+        square(4, 8); // C A X B Z3 q
+
+        // D = (X+B)^2-A-C // Remove X, Remove B
+        add(4, 6, 10); // X+B C A X B Z3 q
+        rm(6); // C A X+B B Z3 q
+        rm(6); // A X+B C Z3 q
+        square(2, 8); // (X+B)^2 A X+B C Z3 q
+        rm(4); // A (X+B)^2 C Z3 q
+        sub(2, 0, 8); // (X+B)^2-A A (X+B)^2 C Z3 q
+        rm(4); // A (X+B)^2-A C Z3 q
+        sub(2, 4, 8); // (X+B)^2-A-C A (X+B)^2-A C Z3 q
+        rm(4); // A D C Z3 q
+
+        // D = D+D
+        add(2, 2, 8); // D+D A D C Z3 q
+        rm(4); // A D C Z3 q
+
+        // E=A+A+A
+        add(0, 0, 8); // 2A A D C Z3 q
+        add(0, 2, 10); // 3A 2A A D C Z3 q
+        rm(4); // 2A 3A D C Z3 q
+        rm(0); // E D C Z3 q
+
+        // F=E^2
+        square(0, 8); // F E D C Z3 q
+
+        // X3= F - 2*D  // Remove F
+        add(4, 4, 10); // 2D F E D C Z3 q
+        sub(2, 0, 12); // F-2D 2D F E D C Z3 q
+        rm(4); // 2D X3 E D C Z3 q
+        rm(0); // X3 E D C Z3 q
+
+        // Y3 = E * (D - X3) - 8 * C  // Remove D C  E
+
+        sub(4, 0, 10); // D-X3 X3 E D C Z3 q
+        rm(6); // X3 E D-X3 C Z3 q
+        mul(2, 4, 10); // E*(D-X3) X3 E D-X3 C Z3 q
+        rm(6); // X3 E E*(D-X3) C Z3 q
+        rm(2); // X3 E*(D-X3) C Z3 q
+        add(4, 4, 8); // 2C X3 E*(D-X3) C Z3 q
+        rm(6); // X3 E*(D-X3) 2C Z3 q
+        add(4, 4, 8); // 4C X3 E*(D-X3) 2C Z3 q
+        rm(6); // X3 E*(D-X3) 4C Z3 q
+        add(4, 4, 8); // 8C X3 E*(D-X3) 4C Z3 q
+        rm(6); // X3 E*(D-X3) 8C Z3 q
+        sub(2, 4, 8); // E*(D-X3)-8C X3 E*(D-X3) 8C Z3 q
+        rm(6); // X3 E*(D-X3) Y3 Z3 q
+        rm(2); // X3 Y3 Z3 q
+
+        C.label("enddouble");
+        C.returnCall();
+    }
+
+    function addPoint() {
+        // p, xR, xI,    yR, yI,   zR zI, q
+
+        C.dup(0); // p p X2 Y2 Z2 q
+
+        C.push(savedP);
+        C.mstore();
+
+        C.iszero(); // X2 Y2 Z2 q
+        C.jumpi("endpadd");
+
+        C.dup(4);
+        C.iszero();
+        C.dup(6);
+        C.iszero();
+        C.and();
+        C.jumpi("returnP"); // X2 Y2 Z2 q
+
+        // lastZ3 = (Z2+1)^2 - Z2^2
+        add1(4, 6); // Z2+1 X2 Y2 Z2 q
+        square(0, 8); // (Z2+1)^2 Z2+1 X2 Y2 Z2 q
+        rm(2); // (Z2+1)^2 X2 Y2 Z2 q
+        square(6, 8); // Z2^2 (Z2+1)^2 X2 Y2 Z2 q
+
+        sub(2, 0, 10); // (Z2+1)^2-Z2^2 Z2^2 (Z2+1)^2 X2 Y2 Z2 q
+
+        saveZ3(); // Z2^2 (Z2+1)^2 X2 Y2 Z2 q
+        rm(2); // Z2^2 X2 Y2 Z2 q
+
+        // U2 = X2
+        // S2 = Y2          // Z2^2 U2 S2 Z2 q
+
+        // U1 = X1 * Z2^2
+        loadX(); // X1 Z2^2 U2 S2 Z2 q
+        mul(0, 2, 10); // X1*Z2^2 X1 Z2^2 U2 S2 Z2 q
+        rm(2); // X1*Z2^2 Z2^2 U2 S2 Z2 q
+
+        mul(2, 8, 10); // Z2^3 U1 Z2^2 U2 S2 Z2 q
+        rm(4); // U1 Z2^3 U2 S2 Z2 q
+        rm(8); // Z2^3 U2 S2 U1 q
+
+        // S1 = Y1 * Z1^3
+        loadY(); // Y1 Z2^3 U2 S2 U1 q
+        mul(0, 2, 10); // S1 Y1 Z2^3 U2 S2 U1 q
+        rm(4); // Y1 S1 U2 S2 U1 q
+        rm(0); // S1 U2 S2 U1 q
+
+        cmp(0, 4); // c1 S1 U2 S2 U1 q
+        cmp(3, 7); // c2 c1 S1 U2 S2 U1 q
+        C.and(); // c2&c1 S1 U2 S2 U1 q
+        C.jumpi("double1"); // S1 U2 S2 U1 q
+
+        // Returns the double
+
+        // H = U2-U1  // Remove U2
+        C.sub(4, 8, 10); // H S1 U2 S2 U1 q
+        rm(4); // S1 H S2 U1 q
+
+        // // r = 2 * (S2-S1)  // Remove S2
+        C.sub(4, 4, 8); // S1-S2 S1 H S2 U1 q
+        rm(6); // S1 H S1-S2 U1 q
+        C.add(4, 4, 8); // 2*(S1-S2) S1 H S1-S2 U1 q
+        rm(6); // S1 H r U1 q
+
+        // I = (2 * H)^2
+        C.add(2, 2, 8); // 2*H S1 H r U1 q
+        C.square(0, 10); // (2*H)^2 2*H S1 H r U1 q
+        rm(2); // I S1 H r U1 q
+
+        // V = U1 * I
+        mul(8, 0, 10); // V I S1 H r U1 q
+        rm(10); // I S1 H r V q
+
+        // J = H * I // Remove I
+        mul(4, 0, 10); // J I S1 H r V q
+        rm(2); // J S1 H r V q
+
+        // X3 = r^2 - J - 2 * V
+
+        // S1J2 = (S1*J)*2  // Remove S1
+        mul(2, 0, 10); // S1*J J S1 H r V q
+        rm(4); // J S1*J H r V q
+        add(2, 2, 10); // (S1*J)*2 J S1*J H r V q
+        rm(4); // J S1J2 H r V q
+
+        // X3 = r^2 - J - 2 * V
+        square(6, 10); // r^2 J S1J2 H r V q
+        sub(0, 2, 12); // r^2-J r^2 J S1J2 H r V q
+        rm(2); // r^2-J J S1J2 H r V q
+        rm(2); // r^2-J S1J2 H r V q
+        add(8, 8, 10); // 2*V r^2-J S1J2 H r V q
+        sub(2, 0, 12); // r^2-J-2*V 2*V r^2-J S1J2 H r V q
+        rm(4); // 2*V  X3 S1J2 H r V q
+        rm(0); // X3 S1J2 H r V q
+
+        // Y3 = r * (V-X3)-S1J2
+
+        sub(8, 0, 10); // V-X3 X3 S1J2 H r V q
+        rm(10); // X3 S1J2 H r V-X3 q
+        mul(6, 8, 10); // r*(V-X3) X3 S1J2 H r V-X3 q
+        rm(8); // X3 S1J2 H r*(V-X3) V-X3 q
+        rm(8); // S1J2 H r*(V-X3) X3 q
+        sub(4, 0, 8); // Y3 S1J2 H r*(V-X3) X3 q
+        rm(6); // S1J2 H Y3 X3 q
+        rm(0); // H Y3 X3 q
+
+        // Z3 = lastZ * H
+        loadZ3(); // lastZ3 H Y3 X3 q
+        mul(0, 2, 8); // Z3 lastZ3 H Y3 X3 q
+        rm(4); // lastZ3 Z3 Y3 X3 q
+        rm(0); // Z3 Y3 X3 q
+
+        C.swap(1);
+        C.swap(5);
+        C.swap(1);
+        C.swap(4); // X3 Y3 Z3 q
+
+        // returns the point in memory
+        C.label("returnP"); // X Y Z q
+        rm(0);
+        rm(0);
+        rm(0);
+        C.push(0);
+        C.push(1);
+        loadX();
+        loadY();
+        C.jump("endpadd");
+
+        C.label("double1"); // S1 U2 S2 U1 q
+        rm(0);
+        rm(0);
+        rm(0);
+        rm(0);
+        C.push(0);
+        C.push(1);
+        loadX();
+        loadY();
+        C.jump("double");
+
+        C.label("endpadd");
+        C.returnCall();
+
+        function loadX() {
+            C.push(savedP);
+            C.mload(); // p
+            C.push(32);
+            C.mul(); // P*32
+            C.push(VAR_POINTS + 32);
+            C.add(); // P*32+32
+            C.dup(); // P*32+32 P*32+32
+            C.mload(); // im P*32+32
+            C.swap(1); // P*32+32 im
+            C.push(0x20); // 32 P*32+32 im
+            C.sub(); // P*32 im
+            C.mload(); // re im
+        }
+
+        function loadY() {
+            C.push(savedP);
+            C.mload(); // p
+            C.push(32);
+            C.mul(); // P*32
+            C.push(VAR_POINTS + 32 * 3);
+            C.add(); // P*32+32
+            C.dup(); // P*32+32 P*32+32
+            C.mload(); // im P*32+32
+            C.swap(1); // P*32+32 im
+            C.push(0x20); // 32 P*32+32 im
+            C.sub(); // P*32 im
+            C.mload(); // re im
+        }
+
+        function loadZ3() {
+            C.push(savedZ3 + 32);
+            C.mload(); // p
+            C.push(savedZ3);
+            C.mload();
+        }
+
+        function saveZ3() {
+            C.push(savedZ3);
+            C.mstore();
+            C.push(savedZ3 + 32);
+            C.mstore();
+        }
+    }
+
+    function affine() {
+        // X Y Z q
+        // If Z2=0 return 0
+        C.label("affine");
+        C.dup(4);
+        C.dup(5 + 1);
+        C.or();
+        C.jumpi("notZero"); // X Y Z q
+        rm(0);
+        rm(0);
+        C.push(0);
+        C.push(0);
+
+        C.jmp("endAffine");
+        C.label("notZero");
+
+        inverse2(4, 6); // Z_inv X Y Z q
+        square(2, 8); // Z2_inv Z_inv X Y Z q
+        mul(0, 2, 10); // Z3_inv Z2_inv Z_inv X Y Z q
+        rm(4); // Z2_inv Z3_inv X Y Z q
+        C.push(1);
+        C.push(0); // 1 Z2_inv Z3_inv X Y Z q
+        rm(10); // Z2_inv Z3_inv X Y 1 q
+        mul(2, 6, 10); // YI Z2_inv Z3_inv X Y 1 q
+        rm(8); // Z2_inv Z3_inv X YI 1 q
+        mul(0, 4, 10); // XI Z2_inv Z3_inv X YI 1 q
+        rm(6); // Z2_inv Z3_inv XI YI 1 q
+        rm(0); // Z3_inv XI YI 1 q
+        rm(0); // XI YI 1 q
+        C.label("endAffine");
+        C.returnCall();
+    }
+
+    function inverse2(a, q) {
+        C.dup(q); // q
+        C.dup(q + 1); // q q
+        C.push(2); // 2 q q
+        C.sub(); // q-2 q
+        C.dup(q + 2); // q q-2 q
+        C.dup(q + 3); // q q q-2 q
+        C.dup(a + 4); // ar q q q-2 q
+        C.dup(a + 5); // ar ar q q q-2 q
+        C.mulmod(); // t0 q q-2 q
+
+        C.dup(q + 4); // q t0 q q-2 q
+        C.dup(a + 1 + 5); // ai q t0 q q-2 q
+        C.dup(a + 1 + 6); // ai ai q t0 q q-2 q
+        C.mulmod(); // t1 t0 q q-2 q
+
+        C.addmod(); // t2 q-2 q
+        C.expmod(); // t3
+
+        C.dup(q + 1); // q t3
+        C.dup(q + 2); // q q t3
+        C.dup(q + 3); // q q q t3
+        C.dup(1); // t3 q q q t3
+        C.sub(); // -t3 q q t3
+        C.dup(a + 1 + 3); // ai -t3 q q t3
+        C.mulmod(); // ii q t3
+        C.swap(2); // t3 q ii
+        C.dup(a + 3); // ar t3 q ii
+        C.mulmod(); // ir ii
+    }
+
+    function storeVals() {
+        C.push(VAR_POINTS); // p
+        for (let i = 0; i < NPOINTS; i++) {
+            const MP = G2.affine(G2.mulScalar(P, bigInt(i)));
+            for (let j = 0; j < 2; j++) {
+                for (let k = 0; k < 2; k++) {
+                    C.push(toHex256(MP[j][k])); // MP[0][0] p
+                    C.dup(1); // p MP[0][0] p
+                    C.mstore(); // p
+                    C.push(32); // 32 p
+                    C.add(); // p+32
+                }
+            }
+        }
+    }
+}
+
+module.exports.abi = [
+    {
+        constant: true,
+        inputs: [
+            {
+                name: "escalar",
+                type: "uint256",
+            },
+        ],
+        name: "mulexp",
+        outputs: [
+            {
+                name: "",
+                type: "uint256",
+            },
+            {
+                name: "",
+                type: "uint256",
+            },
+        ],
+        payable: false,
+        stateMutability: "pure",
+        type: "function",
+    },
+];
+
+module.exports.createCode = createCode;

src/mimc7.js

@@ -1,5 +1,5 @@
-const bn128 = require("snarkjs").bn128;
+const bn128 = require("@tornado/snarkjs").bn128;
-const bigInt = require("snarkjs").bigInt;
+const bigInt = require("@tornado/snarkjs").bigInt;
 const Web3Utils = require("web3-utils");
 const F = bn128.Fr;
 
@@ -8,7 +8,7 @@ const NROUNDS = 91;
 
 exports.getIV = (seed) => {
     if (typeof seed === "undefined") seed = SEED;
-    const c = Web3Utils.keccak256(seed+"_iv");
+    const c = Web3Utils.keccak256(seed + "_iv");
     const cn = bigInt(Web3Utils.toBN(c).toString());
     const iv = cn.mod(F.q);
     return iv;
@@ -19,7 +19,7 @@ exports.getConstants = (seed, nRounds) => {
     if (typeof nRounds === "undefined") nRounds = NROUNDS;
     const cts = new Array(nRounds);
     let c = Web3Utils.keccak256(SEED);
-    for (let i=1; i<nRounds; i++) {
+    for (let i = 1; i < nRounds; i++) {
         c = Web3Utils.keccak256(c);
 
         const n1 = Web3Utils.toBN(c).mod(Web3Utils.toBN(F.q.toString()));
@@ -32,22 +32,27 @@ exports.getConstants = (seed, nRounds) => {
 
 const cts = exports.getConstants(SEED, 91);
 
-exports.hash =  (_x_in, _k) =>{
+exports.hash = (_x_in, _k) => {
     const x_in = bigInt(_x_in);
     const k = bigInt(_k);
     let r;
-    for (let i=0; i<NROUNDS; i++) {
+    for (let i = 0; i < NROUNDS; i++) {
         const c = cts[i];
-        const t = (i==0) ? F.add(x_in, k) : F.add(F.add(r, k), c);
+        const t = i == 0 ? F.add(x_in, k) : F.add(F.add(r, k), c);
         r = F.exp(t, 7);
     }
     return F.affine(F.add(r, k));
 };
 
-exports.multiHash = (arr) => {
+exports.multiHash = (arr, key) => {
-    let r = exports.getIV();
+    let r;
-    for (let i=0; i<arr.length; i++) {
+    if (typeof key === "undefined") {
-        r = exports.hash(r, bigInt(arr[i]));
+        r = F.zero;
+    } else {
+        r = key;
     }
-    return r;
+    for (let i = 0; i < arr.length; i++) {
+        r = F.add(F.add(r, arr[i]), exports.hash(bigInt(arr[i]), r));
+    }
+    return F.affine(r);
 };

src/mimcsponge.js

@@ -0,0 +1,86 @@
+const bn128 = require("@tornado/snarkjs").bn128;
+const bigInt = require("@tornado/snarkjs").bigInt;
+const Web3Utils = require("web3-utils");
+const F = bn128.Fr;
+
+const SEED = "mimcsponge";
+const NROUNDS = 220;
+
+exports.getIV = (seed) => {
+    if (typeof seed === "undefined") seed = SEED;
+    const c = Web3Utils.keccak256(seed + "_iv");
+    const cn = bigInt(Web3Utils.toBN(c).toString());
+    const iv = cn.mod(F.q);
+    return iv;
+};
+
+exports.getConstants = (seed, nRounds) => {
+    if (typeof seed === "undefined") seed = SEED;
+    if (typeof nRounds === "undefined") nRounds = NROUNDS;
+    const cts = new Array(nRounds);
+    let c = Web3Utils.keccak256(SEED);
+    for (let i = 1; i < nRounds; i++) {
+        c = Web3Utils.keccak256(c);
+
+        const n1 = Web3Utils.toBN(c).mod(Web3Utils.toBN(F.q.toString()));
+        const c2 = Web3Utils.padLeft(Web3Utils.toHex(n1), 64);
+        cts[i] = bigInt(Web3Utils.toBN(c2).toString());
+    }
+    cts[0] = bigInt(0);
+    cts[cts.length - 1] = bigInt(0);
+    return cts;
+};
+
+const cts = exports.getConstants(SEED, NROUNDS);
+
+exports.hash = (_xL_in, _xR_in, _k) => {
+    let xL = bigInt(_xL_in);
+    let xR = bigInt(_xR_in);
+    const k = bigInt(_k);
+    for (let i = 0; i < NROUNDS; i++) {
+        const c = cts[i];
+        const t = i == 0 ? F.add(xL, k) : F.add(F.add(xL, k), c);
+        const xR_tmp = bigInt(xR);
+        if (i < NROUNDS - 1) {
+            xR = xL;
+            xL = F.add(xR_tmp, F.exp(t, 5));
+        } else {
+            xR = F.add(xR_tmp, F.exp(t, 5));
+        }
+    }
+    return {
+        xL: F.affine(xL),
+        xR: F.affine(xR),
+    };
+};
+
+exports.multiHash = (arr, key, numOutputs) => {
+    if (typeof numOutputs === "undefined") {
+        numOutputs = 1;
+    }
+    if (typeof key === "undefined") {
+        key = F.zero;
+    }
+
+    let R = F.zero;
+    let C = F.zero;
+
+    for (let i = 0; i < arr.length; i++) {
+        R = F.add(R, bigInt(arr[i]));
+        const S = exports.hash(R, C, key);
+        R = S.xL;
+        C = S.xR;
+    }
+    let outputs = [R];
+    for (let i = 1; i < numOutputs; i++) {
+        const S = exports.hash(R, C, key);
+        R = S.xL;
+        C = S.xR;
+        outputs.push(R);
+    }
+    if (numOutputs == 1) {
+        return F.affine(outputs[0]);
+    } else {
+        return outputs.map((x) => F.affine(x));
+    }
+};

src/mimcsponge_gencontract.js

@@ -0,0 +1,116 @@
+// Copyright (c) 2018 Jordi Baylina
+// License: LGPL-3.0+
+//
+
+const Web3Utils = require("web3-utils");
+
+const Contract = require("./evmasm");
+
+function createCode(seed, n) {
+
+    let ci = Web3Utils.keccak256(seed);
+
+    const C = new Contract();
+
+    C.push(0x64);
+    C.push("0x00");
+    C.push("0x00");
+    C.calldatacopy();
+    C.push("0x0100000000000000000000000000000000000000000000000000000000");
+    C.push("0x00");
+    C.mload();
+    C.div();
+    C.push("0xf47d33b5"); // MiMCSponge(uint256,uint256)
+    C.eq();
+    C.jmpi("start");
+    C.invalid();
+
+    C.label("start");
+    C.push("0x30644e72e131a029b85045b68181585d2833e84879b9709143e1f593f0000001");  // q
+    C.push("0x04");
+    C.mload();          // xL q
+    C.dup(1);           // q xL q
+    C.push("0x24");
+    C.mload();          // xR q xL q
+    C.dup(1);           // q xR q xL q
+    C.dup(3);           // xL q xR q xL q
+    C.dup(1);           // q xL q xR q xL q
+    C.dup(0);           // q q xL q xR q xL q
+    C.dup(2);           // xL q q xL q xR q xL q
+    C.dup(0);           // xL xL q q xL q xR q xL q
+    C.mulmod();         // b=xL^2 q xL q xR q xL q
+    C.dup(0);           // b b q xL q xR q xL q
+    C.mulmod();         // c=xL^4 xL q xR q xL q
+    C.mulmod();         // d=xL^5 xR q xL q
+    C.addmod();         // e=xL^5+xR xL q (for next round: xL xR q)
+
+    for (let i=0; i<n-1; i++) {
+        if (i < n-2) {
+          ci = Web3Utils.keccak256(ci);
+        } else {
+          ci = "0x00";
+        }
+        C.swap(1);      // xR xL q
+        C.dup(2);       // q xR xL q
+        C.dup(2);       // xL q xR xL q
+        C.push(ci);     // ci xL q xR xL q
+        C.addmod();     // a=ci+xL xR xL q
+        C.dup(3);       // q a xR xL q
+        C.swap(1);      // a q xR xL q
+        C.dup(1);       // q a q xR xL q
+        C.dup(0);       // q q a q xR xL q
+        C.dup(2);       // a q q a q xR xL q
+        C.dup(0);       // a a q q a q xR xL q
+        C.mulmod();     // b=a^2 q a q xR xL q
+        C.dup(0);       // b b q a q xR xL q
+        C.mulmod();     // c=a^4 a q xR xL q
+        C.mulmod();     // d=a^5 xR xL q
+        C.dup(3);       // q d xR xL q
+        C.swap(2);      // xR d q xL q
+        C.addmod();     // e=a^5+xR xL q (for next round: xL xR q)
+    }
+
+    C.push("0x20");
+    C.mstore();     // Save it to pos 0;
+    C.push("0x00");
+    C.mstore();     // Save it to pos 1;
+    C.push("0x40");
+    C.push("0x00");
+    C.return();
+
+    return C.createTxData();
+}
+
+module.exports.abi = [
+    {
+        "constant": true,
+        "inputs": [
+            {
+                "name": "xL_in",
+                "type": "uint256"
+            },
+            {
+                "name": "xR_in",
+                "type": "uint256"
+            }
+        ],
+        "name": "MiMCSponge",
+        "outputs": [
+            {
+                "name": "xL",
+                "type": "uint256"
+            },
+            {
+                "name": "xR",
+                "type": "uint256"
+            }
+        ],
+        "payable": false,
+        "stateMutability": "pure",
+        "type": "function"
+    }
+];
+
+module.exports.createCode = createCode;
+
+

src/mimcsponge_printconstants.js

@@ -0,0 +1,13 @@
+const mimcsponge = require("./mimcsponge.js");
+
+const nRounds = 220;
+let S = "[\n";
+const cts = mimcsponge.getConstants();
+for (let i=0; i<nRounds; i++) {
+    S = S + cts[i].toString();
+    if (i<nRounds-1) S = S + ",";
+    S=S+"\n";
+}
+S = S + "]\n";
+
+console.log(S);

src/mimcsponge_printcontract.js

@@ -0,0 +1,13 @@
+const mimcGenContract = require("./mimcsponge_gencontract");
+
+const SEED = "mimcsponge";
+
+let nRounds;
+if (typeof process.argv[2] != "undefined") {
+    nRounds = parseInt(process.argv[2]);
+} else {
+    nRounds = 220;
+}
+
+console.log(mimcGenContract.createCode(SEED, nRounds));
+

src/pedersenHash.js

@@ -1,5 +1,5 @@
-const bn128 = require("snarkjs").bn128;
+const bn128 = require("@tornado/snarkjs").bn128;
-const bigInt = require("snarkjs").bigInt;
+const bigInt = require("@tornado/snarkjs").bigInt;
 const babyJub = require("./babyjub");
 const createBlakeHash = require("blake-hash");
 
@@ -11,39 +11,39 @@ exports.hash = pedersenHash;
 exports.getBasePoint = getBasePoint;
 
 function pedersenHash(msg) {
-    const bitsPerSegment = windowSize*nWindowsPerSegment;
+    const bitsPerSegment = windowSize * nWindowsPerSegment;
     const bits = buffer2bits(msg);
 
-    const nSegments = Math.floor((bits.length - 1)/(windowSize*nWindowsPerSegment)) +1;
+    const nSegments = Math.floor((bits.length - 1) / (windowSize * nWindowsPerSegment)) + 1;
 
-    let accP = [bigInt.zero,bigInt.one];
+    let accP = [bigInt.zero, bigInt.one];
 
-    for (let s=0; s<nSegments; s++) {
+    for (let s = 0; s < nSegments; s++) {
         let nWindows;
-        if (s == nSegments-1) {
+        if (s == nSegments - 1) {
-            nWindows = Math.floor(((bits.length - (nSegments - 1)*bitsPerSegment) - 1) / windowSize) +1;
+            nWindows = Math.floor((bits.length - (nSegments - 1) * bitsPerSegment - 1) / windowSize) + 1;
         } else {
             nWindows = nWindowsPerSegment;
         }
         let escalar = bigInt.zero;
         let exp = bigInt.one;
-        for (let w=0; w<nWindows; w++) {
+        for (let w = 0; w < nWindows; w++) {
-            let o = s*bitsPerSegment + w*windowSize;
+            let o = s * bitsPerSegment + w * windowSize;
             let acc = bigInt.one;
-            for (let b=0; ((b<windowSize-1)&&(o<bits.length)) ; b++) {
+            for (let b = 0; b < windowSize - 1 && o < bits.length; b++) {
                 if (bits[o]) {
-                    acc = acc.add( bigInt.one.shl(b) );
+                    acc = acc.add(bigInt.one.shl(b));
                 }
                 o++;
             }
-            if (o<bits.length) {
+            if (o < bits.length) {
                 if (bits[o]) {
                     acc = acc.neg();
                 }
                 o++;
             }
             escalar = escalar.add(acc.mul(exp));
-            exp = exp.shl(windowSize+1);
+            exp = exp.shl(windowSize + 1);
         }
 
         if (escalar.lesser(bigInt.zero)) {
@@ -59,13 +59,13 @@ function pedersenHash(msg) {
 let bases = [];
 
 function getBasePoint(pointIdx) {
-    if (pointIdx<bases.length) return bases[pointIdx];
+    if (pointIdx < bases.length) return bases[pointIdx];
-    let p= null;
+    let p = null;
     let tryIdx = 0;
-    while (p==null) {
+    while (p == null) {
         const S = GENPOINT_PREFIX + "_" + padLeftZeros(pointIdx, 32) + "_" + padLeftZeros(tryIdx, 32);
         const h = createBlakeHash("blake256").update(S).digest();
-        h[31] = h[31] & 0xBF;  // Set 255th bit to 0 (256th is the signal and 254th is the last possible bit to 1)
+        h[31] = h[31] & 0xbf; // Set 255th bit to 0 (256th is the signal and 254th is the last possible bit to 1)
         p = babyJub.unpackPoint(h);
         tryIdx++;
     }
@@ -82,7 +82,7 @@ function getBasePoint(pointIdx) {
 
 function padLeftZeros(idx, n) {
     let sidx = "" + idx;
-    while (sidx.length<n) sidx = "0"+sidx;
+    while (sidx.length < n) sidx = "0" + sidx;
     return sidx;
 }
 
@@ -91,21 +91,17 @@ Input a buffer
 Returns an array of booleans. 0 is LSB of first byte and so on.
  */
 function buffer2bits(buff) {
-    const res = new Array(buff.length*8);
+    const res = new Array(buff.length * 8);
-    for (let i=0; i<buff.length; i++) {
+    for (let i = 0; i < buff.length; i++) {
         const b = buff[i];
-        res[i*8] = b & 0x01;
+        res[i * 8] = b & 0x01;
-        res[i*8+1] = b & 0x02;
+        res[i * 8 + 1] = b & 0x02;
-        res[i*8+2] = b & 0x04;
+        res[i * 8 + 2] = b & 0x04;
-        res[i*8+3] = b & 0x08;
+        res[i * 8 + 3] = b & 0x08;
-        res[i*8+4] = b & 0x10;
+        res[i * 8 + 4] = b & 0x10;
-        res[i*8+5] = b & 0x20;
+        res[i * 8 + 5] = b & 0x20;
-        res[i*8+6] = b & 0x40;
+        res[i * 8 + 6] = b & 0x40;
-        res[i*8+7] = b & 0x80;
+        res[i * 8 + 7] = b & 0x80;
     }
     return res;
 }
-
-
-
-

src/poseidon.js

@@ -0,0 +1,48 @@
+const assert = require("assert");
+const bn128 = require("@tornado/snarkjs").bn128;
+const bigInt = require("@tornado/snarkjs").bigInt;
+const F = bn128.Fr;
+const { unstringifyBigInts } = require("@tornado/snarkjs");
+
+// Prime 0x30644e72e131a029b85045b68181585d2833e84879b9709143e1f593f0000001
+// const F = new ZqField(Scalar.fromString("21888242871839275222246405745257275088548364400416034343698204186575808495617"));
+
+// Parameters are generated by a reference script https://extgit.iaik.tugraz.at/krypto/hadeshash/-/blob/master/code/generate_parameters_grain.sage
+// Used like so: sage generate_parameters_grain.sage 1 0 254 2 8 56 0x30644e72e131a029b85045b68181585d2833e84879b9709143e1f593f0000001
+const { C, M } = unstringifyBigInts(require("./poseidon_constants.json"));
+
+// Using recommended parameters from whitepaper https://eprint.iacr.org/2019/458.pdf (table 2, table 8)
+// Generated by https://extgit.iaik.tugraz.at/krypto/hadeshash/-/blob/master/code/calc_round_numbers.py
+// And rounded up to nearest integer that divides by t
+const N_ROUNDS_F = 8;
+const N_ROUNDS_P = 35;
+
+const pow5 = (a) => F.mul(a, F.square(F.square(a, a)));
+
+function poseidon(inputs) {
+    assert(inputs.length > 0);
+    assert(inputs.length < 5);
+
+    const t = inputs.length + 1;
+    const nRoundsF = N_ROUNDS_F;
+    const nRoundsP = N_ROUNDS_P;
+
+    let state = [...inputs.map((a) => bigInt(a)), F.zero];
+    for (let r = 0; r < nRoundsF + nRoundsP; r++) {
+        state = state.map((a, i) => F.add(a, bigInt(C[t - 2][r * t + i])));
+
+        if (r < nRoundsF / 2 || r >= nRoundsF / 2 + nRoundsP) {
+            state = state.map((a) => pow5(a));
+        } else {
+            state[0] = pow5(state[0]);
+        }
+
+        // no matrix multiplication in the last round
+        if (r < nRoundsF + nRoundsP - 1) {
+            state = state.map((_, i) => state.reduce((acc, a, j) => F.add(acc, F.mul(bigInt(M[t - 2][j][i]), a)), F.zero));
+        }
+    }
+    return F.affine(state[0]);
+}
+
+module.exports = poseidon;

src/poseidon_constants.json

@@ -0,0 +1,706 @@
+{
+  "C": [
+    [
+      "0x1083c3a16f6c55c7956a5ce08fb39df23957cc6381c217985d9ba0ae29771100",
+      "0x1dd8990173e411a3a4dff6710e8c3df9ef8e07216efd610a63b3ce10ab57b8ae",
+      "0x1f3ff523faa41dab28fd27c47286a6b93fe44a9e993ea1ab3723d17aba78b3de",
+      "0x2662d2995574e11e58f4ce13e282b6b57c2d7df1681bfef79a0261dc300573fc",
+      "0x20b3c06fa2b82434f725af0c37efb847324312d182d127fdb2054cfa0da9a8be",
+      "0x18ff92e6daa7639fc832d97928e4098d84efa47d7ef5c1929e54232960ae32b1",
+      "0x2c175450b8686e4958e698cf1af0b54e0e912ea93f35be8e8e1c3daebbc034be",
+      "0x00596181885c32674b20103a1a153744c302cf1fa86ee39e14e2ff9a5f9efcba",
+      "0x0e21b4330dd8a9563e60ef4ffdbb26b85ae766e867633e58c20932365d273a53",
+      "0x16eb0a124adc927e3fdae149e1aef43d5ee08693f7dac9aa20b46bb31ae12d1f",
+      "0x0ba1d75274999eb448de5751b5bd165582205d564c636e8340d2a3fe09e4e01c",
+      "0x04d615bf7a10c566ae2b198a40bef494bc43e7bbd40baa908bf2ce989d39cb16",
+      "0x10f7d989ce23d2ec2dc7cb425b603ef0fb09efb7f620a25b4e0187fafaeb364e",
+      "0x091562ecab7c0dffec5f874d385c6a7f06e10c0ba2d43a6e4958a47b9d369438",
+      "0x214c48e2dd8005914ef1c20e4e2e73933abc7dde8bf2f87ffee4bacb52110931",
+      "0x29418d43249c5f094ff06f9bc1b80e21dffbaac1874539e42b40f8dc49facb42",
+      "0x017c1908a9f8359c1280d6ac4edfdcec6ae060d0d520bf64b183191397999203",
+      "0x1a01b85c3b8e81a862a90fd72d5989f75683d9573d4865d79228eb8c5a105e93",
+      "0x261b40b148e35d05c9a231b70f46bd67e973c7e3cb33648e1904cc257d52a4d5",
+      "0x036eb758e5135f0137fc7ef59c37454e2b86f0fd90932f0e382ae7c97e3b2e35",
+      "0x2de1f93fc74bfa9f08fae8bb730f8d266d3726892b97db237f703ed3a8817ac2",
+      "0x2be0f288c7cb40cf6b063559e689775aa6e0837ff4a3a5d3d62f9f14d688c925",
+      "0x202410f3233bc5ccf8621873ab2827da7a365ffbd5c55d62bed934a2bf441256",
+      "0x2f4aa966c6aaa0f96b1a2d8c7c6090ac81a390252e2c2eca95b2d9d4f6f60118",
+      "0x1c8b2beb3bbc01ec6a6f31261215c3d3aa4193322317b2a8f0816369fbd8db0d",
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+      "0x2e43508dd63e40681c9122d482d7900ebad01b9392e6c1611019e43cbc5455b8",
+      "0x113febd0e87001dda480a8c347f8a368c00740a25ee2d8d36c0608500bec6f2f",
+      "0x23cfec0d834aadca55bfe515af80e59183c1b24ea600cf7cde863df02fc859fc",
+      "0x1cbb1f36a1e7bc45c29ed8922599374d57010887420c91ecfa8727ad51df9b21",
+      "0x1c2a24adf0e0c5254eb4c834e252a04758e84181cfd1a163dc7089337c4eba52",
+      "0x2b7a7d74ea33c98f3b45bae98a2498ad5d316a43cfd40e8be9e1c5fd901f5bd8",
+      "0x1edb94d38964f284b41136812bd52c7679b1e1a3ce3b3a1354b1417b9012ec4b",
+      "0x2c2bad47394f3068c8b996c4859a22dd65460292fef9c250a5a9da8e0628d534",
+      "0x0b140b193aab84f6235a88b862ce4275746d5cac940fc494aef23d2279e8a353",
+      "0x15673d3dd92656dd60513676f7814459619a09681ee4ab63dd8ff3407a547846",
+      "0x2180ff0b613f8cce937068fa4a77a0f97865c4aed76483cb1fe09227517ba888",
+      "0x1048b70290f52d668ee6b98950b3e904fee8c844428919300a8945c0fe3e7280",
+      "0x0326df120ad22e946c41f475b7702dae0dd42a4387a8702c8e954aca640b2c79",
+      "0x2fc77a73fdbaaa22e2fc521f72f9ce5cef4857f58001409898d52c5e5b1723db",
+      "0x14938b2b6259f02791cccd157d789c2de68cdad27dc55aa08b9b90ec13dbfd79",
+      "0x0493187bf26d38b13ca04c712b42778f8618e6f7d9f9dd52bd4da96e085c7a78",
+      "0x1d40769876c58db37289e371fef2ffa559c95630dee045cde6e18370d2ceb561",
+      "0x03e7e9b8084366995f7a2f5732349b1139726536b378d78772eabb302705d204",
+      "0x06147e6e152d7d58f4cf01e05ae0f024607b8b7c3770bd5b7f3a54e048c30a17",
+      "0x2e49300214c5a0a7a6ebbbc8c48cc323be26d42e98e5bbbb0e2a10ecf4fe40fe",
+      "0x051c8240e8907e776279e7c66cdbdf39c9516f39ae61883185fac1ef5c64bbba",
+      "0x2c737904e8f8e845bf132de2b3be5d638993a9987d0e8003022f08bf6633a5bd",
+      "0x07825bfc67f5658bb5a3b1a26c8ad00f657b54a4a1a679ee37df11bed2ba219d",
+      "0x1c0e4d8b013541963f8e04667f13e6a60fafebb9bceca823d4054a7a63f8b569",
+      "0x1083d7cd5a11e3d3dba85745de17ea4abec8a2790003f39f1b1262521380d4b6",
+      "0x0e14bed1525102ddc1d3c17478ab0c2d4cdbfa67f5ef1a568642984665b4dad2",
+      "0x1d0c3a89fcc0171b7977f8f20bad9cfae37507a2038d3165d764632461745760",
+      "0x03162758d9df43281331905c161ed977e240f4a0c9cdd3f3f18a3b0592c3e67e",
+      "0x0fe5ec0343e9832d8a4c7c1bee1d73decc0661a27c527bec309561fda95a529a",
+      "0x0ddd28a35af3aced48f61c6558c5c4a72690975c2fc948feec51e1a53a6be5e7",
+      "0x2318c886ea334e72e9833e3b0bc9868e51843b8b63e0fa3d814540ad7f5d0359",
+      "0x0d5786dec1685237e3d171eb298a36a475c83c0651a450227d261d78260bab70",
+      "0x152282540da509e8ab8abcf010d3bd8f29d1c2c60454ffda67ca732db024f3ec",
+      "0x1b7f4ec7b4c7a593efd5f53ef204e642bb16fb9298a6ffbd1767183170822ad2",
+      "0x19e02df6f343636868908d644e9a2f767bb9fa9c13756669cb1d805898d949c0",
+      "0x115d3fa50f1ea1f76b4641586e954be25d7428ad21f5fea76b5889a3f4923ab6",
+      "0x059db78b0146183e8e6e0829bad801fcb4a0c4e6a8872cb3a5a497118dd29f2c",
+      "0x0e6441f0174ebe123449b9072472442e03c2f72a29c474d514e4dbb72c23bce1",
+      "0x2c5302069d7b3b9638a3ea52e5530059155d706af30df469ab929fa1c954efa6",
+      "0x181a99f989f2f853ae7db14bef800710a05ddc26ed65cd5e1588150864565829",
+      "0x248a2275485f8946848f0d9433ee1cf6501bbfa8f9404341ef81a9c4b128db3a",
+      "0x081fa1eb11e0e5198e7135c533688ad0b4e438773b9d99a610ece3dd414845ad",
+      "0x17b1a8626b79093deb27cfa548da7bf8499e71928d9433a7243037d493c08b53",
+      "0x0af8f7fc8f0ba49245ae28cfbb7b86bdf3f38b4229981b42ad8ba4af993ae5d8",
+      "0x19da094b62046661682693af49d35d72a055555b0b2f1a717ef61a0fbdc90169",
+      "0x287b1755734c8e691d9651ff53f3bae296bc16d33713bf32457869e3650dbc9e",
+      "0x26501a99afdb95154415e3de32b0d4790ff228ee94577537608d30d85a3349d0",
+      "0x0c7ca2af6c86f460df0b20ccb30b2a3395f2dabaf7f970f1e1955a1166e0460b",
+      "0x141cffa13da7885f34ff295561b5d2da8c5b785932ebcd7039752c0dd1cc08a5",
+      "0x188f478690e359cc0b468d095b37f314c53a5873054cbdb5eb4cde9b97d8c837",
+      "0x2daafa58220bc8ab507118fb29b65e48e6d8d3ad20d6fa24d57b8a90e21530d6",
+      "0x1c8eaf137b6310715fc0881b8a080e9391a0217e8e3980ccc3fbc6423ae10f1b",
+      "0x018864151eb108a9115379b3d3ec902aa961f1b846490266855ab48077487948",
+      "0x16a426c1847543857385ef8ed03325a50d5cbeff1ac61ef3b710099ab8be88ae",
+      "0x13d7ed015205feee9d09307b193811ea89b22bf4ecb3e8dcb951ff1e86ea1dbb",
+      "0x2b35afa98d5c3da62ae05e0e3ec587eacbd195fa3405260ce2b910cb198acf5f"
+    ]
+  ],
+  "M": [
+    [
+      [
+        "0x028540ffcb050250186bb64a9b6e6d0eaf493d2c72701392fa8de7dbd371fad4",
+        "0x1afa3a02008d8eab18725ff780b7f310156ddef81579367ae944478644e6367e"
+      ],
+      [
+        "0x00b0cad1d2259f1f6dd07b4e5674057f531b5ce316f741437137b7615caf9fb0",
+        "0x1378798a617a99c07cd850cb3daab0a1b20cb2fe9125133ae092132a071eeffe"
+      ]
+    ],
+    [
+      [
+        "0x142d76a5176d04542cc86c20ad276af0f1c4b85a08f5c7fb7076c37bee91b0b0",
+        "0x1f020db9ae14abc9448d91922ce7e8a4b751468b692082ac74d4db30f9a20cbd",
+        "0x02f57e7420298b689cc5932b434d659054d7e9e1a28ce342a357d28d3d0e7ce6"
+      ],
+      [
+        "0x0cc8c6aa7aa0f7a0191f236aad3b994b4e6d2671ef5cddef7395a663f18a82b6",
+        "0x132d968e1372659c4b77528bec8b46830564bbb1ef44e828966a07578b52db1e",
+        "0x2e7a166a1b7e646c9f9e04f451e541b3eb516fbad05901b4f37e7dd402a501de"
+      ],
+      [
+        "0x0411c26273e6ac2f2b7ef6da84499413605b6099bda4254a31ab3bac526a1581",
+        "0x1e9d5cd096fd315de38e6e2490b8e9c406f954ba63a8be9f11756780af6315f1",
+        "0x198dfceb06c35ab9162320e55b68a7d160ac9caf74ff1098d62b4cd86823e74c"
+      ]
+    ],
+    [
+      [
+        "0x055042fce3759fd347470105116d64130f5cb362e345d7651c377a63f1c73f81",
+        "0x2ce35792e15aa0836ab5089a71903eb626bfe7fd6a460cb2f9d93f338b1c93a8",
+        "0x123324a5430d1e324553566a662bab9bd5b78bc183829124d3407352f3399a44",
+        "0x014b3af716655fd79b921fb8aba95bf4033d91eefddba964c6813b194ec2e92b"
+      ],
+      [
+        "0x00f7a1e3ee734053ac96e44087e97819d5289c2e002339ed649d14df4416c664",
+        "0x158586db6e410642a1e221f5d80a482cc6ba3cfbe51a38502987db8c42d53bea",
+        "0x1607fd8dcba9cecf99fa9f882b7bf67c9bdf121aef9843d5d47301d812d23406",
+        "0x02afb3d945a884974edcf2b2ea59422bfbfb98ba0ea6ae232a2fbf2a98fce73c"
+      ],
+      [
+        "0x1303c19d840c01975ac5f417c7d797c84e32937e82c3267a8a5abf86c2adc2dc",
+        "0x0dfbb78b621ce3f17ea1fca649c7fdf8936872b335d86c5f3ac83072f2b0804e",
+        "0x0c6d9cca76d73644645d39f6da45e32a5784eb278da4ba346226e3503767c559",
+        "0x271868e3480e8509ee5b7d057e0e85677220d4751c1475c8a07c578584dba071"
+      ],
+      [
+        "0x1ce85b8925fef3258cf52dd26ea5dbe2616118a051fad03b174c55e6bf25c193",
+        "0x10a902db55c0d71628c51efcb7f01c28e3e60833c254e68d38833c0b577e7bf8",
+        "0x24afc938e9d8abe5f4cc11f1388ab83460681a00dced6ccd170860e03508ca5c",
+        "0x297a43fb5e3fefcf3ccabaacf30e9171e4fb359ab66c6ebc8bd6654bd387ab1b"
+      ]
+    ],
+    [
+      [
+        "0x098df2176f14c72d9ef76d268c6526704b2dce0d2ab0bf0d0b6506c598a12e39",
+        "0x1ee4a90d3dc9864851e9cefb41c3e19218f7ec9b97283b8781d74a9260a9b182",
+        "0x090becc1ca85079c519e9519456d0613c4dea08dc17ce3d3ac24c51780bbe653",
+        "0x24510d25f0893ebc56cb6d302b08ebc1fe23a842483a1cf105efccdb8f6623be",
+        "0x1836f551337cc92e446cda258313ddb9a1291f822c2120d3765f5bb29bccd044"
+      ],
+      [
+        "0x235a03a1f31060c62a1bb1b6cbce38317dcf3501e3f0b3d92b4b01a070ee58b2",
+        "0x1b0481c924c00fd4b7809ff4a9f9daa7f12efea4821078b869159d34e7c9caca",
+        "0x2f1ced49ea067ad0f3a22b51ad12da2d7b0280f3f50977f9b09d4bea92e6b34e",
+        "0x28f301e64ff54c671bb7a9fc672a420e3af0382c71af2aec84d1b26d19bd01ee",
+        "0x05c29dff5d6ae85f7bc09637a86134c63a8052d1905a8057449cc7d92658f24d"
+      ],
+      [
+        "0x2885788b4255180581aac93d5313e7489efc386deceaf13050ebcb8cdddff5fa",
+        "0x2a7f03d4b0954a37f9a33ebd9117e2c4cfaa3978e5f221a30db56a7403572a3c",
+        "0x291093f3d5182756f267566140d2d8f5356be8408b40ead3748484267f1e90cb",
+        "0x29ecfb524f4135deb55d9d9eb02839dedda189c17726aeef96019b205c8aab53",
+        "0x1650d221980ec72736322d9fa404a0fe6bea3d8530b71c9522096e455be52379"
+      ],
+      [
+        "0x10d08ba1c37b79a36c9d3c9a3d8fd2ff41f2445e7d71dd5ede6f45987e5e1044",
+        "0x1eaa7441754632ffae99c9e2f2264c1bc89551e7bbf2c889d92af30bef70e817",
+        "0x062101fedd4ecff781f529f57f45e8b479b03d86a11acf549c6555a1293c70b3",
+        "0x1c1ec7db63405475e844b5cb6215d9e2919e903a7387721db150c9977a1818b5",
+        "0x0b5ca51ebe8fd98da6e8f4a4465e19dd210bf59e0841f50fcf0f06e43d83ce1f"
+      ],
+      [
+        "0x0143b223ed92a0b426f8f2886cda3d8fdb565eb6acb4841897489e14cbc943a8",
+        "0x017f82dcfdf078265df4cfa1d9d79aeec0fee433eebc489a875785b99dc8832a",
+        "0x0013ae98ed23af18461bcde9ff99728edeec173e63c5467a209c2a34b503dc72",
+        "0x0e120df26061ea797bba1f6153995de0090ddb744ad23bfcdf1ecc28a9b18338",
+        "0x0233c1411c8cb5ff0d33e20a65bfd9c0347deb9a12a50e55fb01a40248ccc366"
+      ]
+    ]
+  ]
+}

src/poseidon_gencontract.js

@@ -0,0 +1,213 @@
+// Copyright (c) 2018 Jordi Baylina
+// License: LGPL-3.0+
+//
+
+const Contract = require("./evmasm");
+const { unstringifyBigInts } = require("@tornado/snarkjs");
+const Web3Utils = require("web3-utils");
+
+const { C: K, M } = unstringifyBigInts(require("./poseidon_constants.json"));
+
+const N_ROUNDS_F = 8;
+const N_ROUNDS_P = 35;
+
+function toHex256(a) {
+    if (typeof a === "string" && a.startsWith("0x")) {
+        return a;
+    }
+    let S = a.toString(16);
+    while (S.length < 64) S = "0" + S;
+    return "0x" + S;
+}
+
+function createCode(nInputs) {
+    if (nInputs < 1 || nInputs > 4) throw new Error("Invalid number of inputs. Must be 1<=nInputs<=8");
+    const t = nInputs + 1;
+    const nRoundsF = N_ROUNDS_F;
+    const nRoundsP = N_ROUNDS_P;
+
+    const C = new Contract();
+
+    function saveM() {
+        for (let i = 0; i < t; i++) {
+            for (let j = 0; j < t; j++) {
+                C.push(toHex256(M[t - 2][j][i]));
+                C.push((1 + i * t + j) * 32);
+                C.mstore();
+            }
+        }
+    }
+
+    function ark(r) {
+        // st, q
+        for (let i = 0; i < t; i++) {
+            C.dup(t); // q, st, q
+            C.push(toHex256(K[t - 2][r * t + i])); // K, q, st, q
+            C.dup(2 + i); // st[i], K, q, st, q
+            C.addmod(); // newSt[i], st, q
+            C.swap(1 + i); // xx, st, q
+            C.pop();
+        }
+    }
+
+    function sigma(p) {
+        // sq, q
+        C.dup(t); // q, st, q
+        C.dup(1 + p); // st[p] , q , st, q
+        C.dup(1); // q, st[p] , q , st, q
+        C.dup(0); // q, q, st[p] , q , st, q
+        C.dup(2); // st[p] , q, q, st[p] , q , st, q
+        C.dup(0); // st[p] , st[p] , q, q, st[p] , q , st, q
+        C.mulmod(); // st2[p], q, st[p] , q , st, q
+        C.dup(0); // st2[p], st2[p], q, st[p] , q , st, q
+        C.mulmod(); // st4[p], st[p] , q , st, q
+        C.mulmod(); // st5[p], st, q
+        C.swap(1 + p);
+        C.pop(); // newst, q
+    }
+
+    function mix() {
+        C.label("mix");
+        for (let i = 0; i < t; i++) {
+            for (let j = 0; j < t; j++) {
+                if (j == 0) {
+                    C.dup(i + t); // q, newSt, oldSt, q
+                    C.push((1 + i * t + j) * 32);
+                    C.mload(); // M, q, newSt, oldSt, q
+                    C.dup(2 + i + j); // oldSt[j], M, q, newSt, oldSt, q
+                    C.mulmod(); // acc, newSt, oldSt, q
+                } else {
+                    C.dup(1 + i + t); // q, acc, newSt, oldSt, q
+                    C.push((1 + i * t + j) * 32);
+                    C.mload(); // M, q, acc, newSt, oldSt, q
+                    C.dup(3 + i + j); // oldSt[j], M, q, acc, newSt, oldSt, q
+                    C.mulmod(); // aux, acc, newSt, oldSt, q
+                    C.dup(2 + i + t); // q, aux, acc, newSt, oldSt, q
+                    C.swap(2); // acc, aux, q, newSt, oldSt, q
+                    C.addmod(); // acc, newSt, oldSt, q
+                }
+            }
+        }
+        for (let i = 0; i < t; i++) {
+            C.swap(t - i + (t - i - 1));
+            C.pop();
+        }
+        C.push(0);
+        C.mload();
+        C.jmp();
+    }
+
+    // Check selector
+    C.push("0x0100000000000000000000000000000000000000000000000000000000");
+    C.push(0);
+    C.calldataload();
+    C.div();
+    C.dup(0);
+    C.push(Web3Utils.keccak256(`poseidon(uint256[${nInputs}])`).slice(0, 10)); // poseidon(uint256[n])
+    C.eq();
+    C.swap(1);
+    C.push(Web3Utils.keccak256(`poseidon(bytes32[${nInputs}])`).slice(0, 10)); // poseidon(bytes32[n])
+    C.eq();
+    C.or();
+    C.jmpi("start");
+    C.invalid();
+
+    C.label("start");
+
+    saveM();
+
+    C.push("0x30644e72e131a029b85045b68181585d2833e84879b9709143e1f593f0000001"); // q
+
+    // Load t values from the call data.
+    // The function has a single array param param
+    // [Selector (4)] [item1 (32)] [item2 (32)] ....
+    // Stack positions 0-nInputs.
+    for (let i = 0; i < t; i++) {
+        C.push(0x04 + 0x20 * (nInputs - i));
+        C.calldataload();
+    }
+
+    for (let i = 0; i < nRoundsF + nRoundsP - 1; i++) {
+        ark(i);
+        if (i < nRoundsF / 2 || i >= nRoundsP + nRoundsF / 2) {
+            for (let j = 0; j < t; j++) {
+                sigma(j);
+            }
+        } else {
+            sigma(0);
+        }
+        const strLabel = "aferMix" + i;
+        C._pushLabel(strLabel);
+        C.push(0);
+        C.mstore();
+        C.jmp("mix");
+        C.label(strLabel);
+    }
+
+    C.push(toHex256(K[t - 2][(nRoundsF + nRoundsP - 1) * t])); // K, st, q
+    C.dup(t + 1); // q, K, st, q
+    C.swap(2); // st[0], K, q, st\st[0]
+    C.addmod(); // st q
+
+    sigma(0);
+
+    C.push("0x00");
+    C.mstore(); // Save it to pos 0;
+    C.push("0x20");
+    C.push("0x00");
+    C.return();
+
+    mix();
+
+    return C.createTxData();
+}
+
+function generateABI(nInputs) {
+    return [
+        {
+            constant: true,
+            inputs: [
+                {
+                    internalType: `bytes32[${nInputs}]`,
+                    name: "input",
+                    type: `bytes32[${nInputs}]`,
+                },
+            ],
+            name: "poseidon",
+            outputs: [
+                {
+                    internalType: "bytes32",
+                    name: "",
+                    type: "bytes32",
+                },
+            ],
+            payable: false,
+            stateMutability: "pure",
+            type: "function",
+        },
+        {
+            constant: true,
+            inputs: [
+                {
+                    internalType: `uint256[${nInputs}]`,
+                    name: "input",
+                    type: `uint256[${nInputs}]`,
+                },
+            ],
+            name: "poseidon",
+            outputs: [
+                {
+                    internalType: "uint256",
+                    name: "",
+                    type: "uint256",
+                },
+            ],
+            payable: false,
+            stateMutability: "pure",
+            type: "function",
+        },
+    ];
+}
+
+module.exports.generateABI = generateABI;
+module.exports.createCode = createCode;

src/poseidon_printcontract.js

@@ -0,0 +1,13 @@
+const poseidonGenContract = require("./poseidon_gencontract");
+
+if (process.argv.length != 3) {
+    console.log("Usage: node poseidon_gencontract.js [numberOfInputs]");
+    process.exit(1);
+}
+
+const nInputs = Number(process.argv[2]);
+
+console.log(nInputs);
+
+console.log(poseidonGenContract.createCode(nInputs));
+

src/poseidon_printmatrix.js

@@ -0,0 +1,22 @@
+
+
+const Poseidon = require("./poseidon.js");
+
+const M = Poseidon.getMatrix();
+
+let S = "[\n    ";
+
+for (let i=0; i<M.length; i++) {
+    const LC = M[i];
+    S = S + "[\n";
+    for (let j=0; j<LC.length; j++) {
+        S = S + "        " + M[i][j].toString();
+        if (j<LC.length-1) S = S + ",";
+        S = S + "\n";
+    }
+    S = S + "    ]";
+    if (i<M.length-1) S = S + ",";
+}
+S=S+ "\n]\n";
+
+console.log(S);

src/smt.js

@@ -1,17 +1,15 @@
-const bigInt = require("snarkjs").bigInt;
+const bigInt = require("@tornado/snarkjs").bigInt;
 
 const SMTMemDB = require("./smt_memdb");
-const mimc7 = require("./mimc7");
+const { hash0, hash1 } = require("./smt_hashes_poseidon");
 
 class SMT {
-
     constructor(db, root) {
         this.db = db;
         this.root = root;
     }
 
     _splitBits(_key) {
-
         let k = bigInt(_key);
         const res = [];
 
@@ -24,7 +22,7 @@ class SMT {
             k = k.shr(1);
         }
 
-        while (res.length<256) res.push(false);
+        while (res.length < 256) res.push(false);
 
         return res;
     }
@@ -33,7 +31,6 @@ class SMT {
         const key = bigInt(_key);
         const newValue = bigInt(_newValue);
 
-
         const resFind = await this.find(key);
         const res = {};
         res.oldRoot = this.root;
@@ -46,24 +43,24 @@ class SMT {
         const ins = [];
         const dels = [];
 
-        let rtOld = mimc7.multiHash([1, key, resFind.foundValue]);
+        let rtOld = hash1(key, resFind.foundValue);
-        let rtNew = mimc7.multiHash([1, key, newValue]);
+        let rtNew = hash1(key, newValue);
-        ins.push([rtNew, [1, key, newValue ]]);
+        ins.push([rtNew, [1, key, newValue]]);
         dels.push(rtOld);
 
         const keyBits = this._splitBits(key);
-        for (let level = resFind.siblings.length-1; level >=0; level--) {
+        for (let level = resFind.siblings.length - 1; level >= 0; level--) {
             let oldNode, newNode;
             const sibling = resFind.siblings[level];
             if (keyBits[level]) {
                 oldNode = [sibling, rtOld];
                 newNode = [sibling, rtNew];
             } else {
-                oldNode = [rtOld, sibling, ];
+                oldNode = [rtOld, sibling];
-                newNode = [rtNew, sibling, ];
+                newNode = [rtNew, sibling];
             }
-            rtOld = mimc7.multiHash(oldNode);
+            rtOld = hash0(oldNode[0], oldNode[1]);
-            rtNew = mimc7.multiHash(newNode);
+            rtNew = hash0(newNode[0], newNode[1]);
             dels.push(rtOld);
             ins.push([rtNew, newNode]);
         }
@@ -87,19 +84,19 @@ class SMT {
         const res = {
             siblings: [],
             delKey: key,
-            delValue: resFind.foundValue
+            delValue: resFind.foundValue,
         };
 
         const dels = [];
         const ins = [];
-        let rtOld = mimc7.multiHash([1, key, resFind.foundValue]);
+        let rtOld = hash1(key, resFind.foundValue);
         let rtNew;
         dels.push(rtOld);
 
         let mixed;
         if (resFind.siblings.length > 0) {
             const record = await this.db.get(resFind.siblings[resFind.siblings.length - 1]);
-            if ((record.length == 3)&&(record[0].equals(bigInt.one))) {
+            if (record.length == 3 && record[0].equals(bigInt.one)) {
                 mixed = false;
                 res.oldKey = record[1];
                 res.oldValue = record[2];
@@ -123,16 +120,16 @@ class SMT {
 
         const keyBits = this._splitBits(key);
 
-        for (let level = resFind.siblings.length-1; level >=0; level--) {
+        for (let level = resFind.siblings.length - 1; level >= 0; level--) {
             let newSibling = resFind.siblings[level];
-            if ((level == resFind.siblings.length-1)&&(!res.isOld0)) {
+            if (level == resFind.siblings.length - 1 && !res.isOld0) {
                 newSibling = bigInt.zero;
             }
             const oldSibling = resFind.siblings[level];
             if (keyBits[level]) {
-                rtOld = mimc7.multiHash([oldSibling, rtOld]);
+                rtOld = hash0(oldSibling, rtOld);
             } else {
-                rtOld = mimc7.multiHash([rtOld, oldSibling]);
+                rtOld = hash0(rtOld, oldSibling);
             }
             dels.push(rtOld);
             if (!newSibling.isZero()) {
@@ -147,7 +144,7 @@ class SMT {
                 } else {
                     newNode = [rtNew, newSibling];
                 }
-                rtNew = mimc7.multiHash(newNode);
+                rtNew = hash0(newNode[0], newNode[1]);
                 ins.push([rtNew, newNode]);
             }
         }
@@ -182,14 +179,14 @@ class SMT {
 
         if (!resFind.isOld0) {
             const oldKeyits = this._splitBits(resFind.notFoundKey);
-            for (let i= res.siblings.length; oldKeyits[i] == newKeyBits[i]; i++) {
+            for (let i = res.siblings.length; oldKeyits[i] == newKeyBits[i]; i++) {
                 res.siblings.push(bigInt.zero);
             }
-            rtOld = mimc7.multiHash([1, resFind.notFoundKey, resFind.notFoundValue]);
+            rtOld = hash1(resFind.notFoundKey, resFind.notFoundValue);
             res.siblings.push(rtOld);
             addedOne = true;
             mixed = false;
-        } else if (res.siblings.length >0) {
+        } else if (res.siblings.length > 0) {
             mixed = true;
             rtOld = bigInt.zero;
         }
@@ -197,37 +194,36 @@ class SMT {
         const inserts = [];
         const dels = [];
 
-        let rt = mimc7.multiHash([1, key, value]);
+        let rt = hash1(key, value);
-        inserts.push([rt,[1, key, value]] );
+        inserts.push([rt, [1, key, value]]);
 
-        for (let i=res.siblings.length-1; i>=0; i--) {
+        for (let i = res.siblings.length - 1; i >= 0; i--) {
-            if ((i<res.siblings.length-1)&&(!res.siblings[i].isZero())) {
+            if (i < res.siblings.length - 1 && !res.siblings[i].isZero()) {
                 mixed = true;
             }
             if (mixed) {
                 const oldSibling = resFind.siblings[i];
                 if (newKeyBits[i]) {
-                    rtOld = mimc7.multiHash([oldSibling, rtOld]);
+                    rtOld = hash0(oldSibling, rtOld);
                 } else {
-                    rtOld = mimc7.multiHash([rtOld, oldSibling]);
+                    rtOld = hash0(rtOld, oldSibling);
                 }
                 dels.push(rtOld);
             }
 
-
             let newRt;
             if (newKeyBits[i]) {
-                newRt = mimc7.multiHash([res.siblings[i], rt]);
+                newRt = hash0(res.siblings[i], rt);
-                inserts.push([newRt,[res.siblings[i], rt]] );
+                inserts.push([newRt, [res.siblings[i], rt]]);
             } else {
-                newRt = mimc7.multiHash([rt, res.siblings[i]]);
+                newRt = hash0(rt, res.siblings[i]);
-                inserts.push([newRt,[rt, res.siblings[i]]] );
+                inserts.push([newRt, [rt, res.siblings[i]]]);
             }
             rt = newRt;
         }
 
         if (addedOne) res.siblings.pop();
-        while ((res.siblings.length>0) && (res.siblings[res.siblings.length-1].isZero())) {
+        while (res.siblings.length > 0 && res.siblings[res.siblings.length - 1].isZero()) {
             res.siblings.pop();
         }
         res.oldKey = resFind.notFoundKey;
@@ -235,7 +231,6 @@ class SMT {
         res.newRoot = rt;
         res.isOld0 = resFind.isOld0;
 
-
         await this.db.multiIns(inserts);
         await this.db.setRoot(rt);
         this.root = rt;
@@ -259,20 +254,20 @@ class SMT {
                 siblings: [],
                 notFoundKey: key,
                 notFoundValue: bigInt.zero,
-                isOld0: true
+                isOld0: true,
             };
             return res;
         }
 
         const record = await this.db.get(root);
 
-        if ((record.length==3)&&(record[0].equals(bigInt.one))) {
+        if (record.length == 3 && record[0].equals(bigInt.one)) {
             if (record[1].equals(key)) {
                 res = {
                     found: true,
                     siblings: [],
                     foundValue: record[2],
-                    isOld0: false
+                    isOld0: false,
                 };
             } else {
                 res = {
@@ -280,15 +275,15 @@ class SMT {
                     siblings: [],
                     notFoundKey: record[1],
                     notFoundValue: record[2],
-                    isOld0: false
+                    isOld0: false,
                 };
             }
         } else {
             if (keyBits[level] == 0) {
-                res = await this._find(key, keyBits, record[0], level+1);
+                res = await this._find(key, keyBits, record[0], level + 1);
                 res.siblings.unshift(record[1]);
             } else {
-                res = await this._find(key, keyBits, record[1], level+1);
+                res = await this._find(key, keyBits, record[1], level + 1);
                 res.siblings.unshift(record[0]);
             }
         }
@@ -296,9 +291,7 @@ class SMT {
     }
 }
 
-async function loadFromFile(fileName) {
+async function loadFromFile(fileName) {}
-
-}
 
 async function newMemEmptyTrie() {
     const db = new SMTMemDB();
@@ -309,3 +302,5 @@ async function newMemEmptyTrie() {
 
 module.exports.loadFromFile = loadFromFile;
 module.exports.newMemEmptyTrie = newMemEmptyTrie;
+module.exports.SMT = SMT;
+module.exports.SMTMemDB = SMTMemDB;

src/smt_hashes_mimc.js

@@ -0,0 +1,10 @@
+const mimc7 = require("./mimc7");
+const bigInt = require("@tornado/snarkjs").bigInt;
+
+exports.hash0 = function (left, right) {
+    return mimc7.multiHash(left, right);
+};
+
+exports.hash1 = function (key, value) {
+    return mimc7.multiHash([key, value], bigInt.one);
+};

src/smt_hashes_poseidon.js

@@ -0,0 +1,10 @@
+const poseidon = require("./poseidon");
+const bigInt = require("@tornado/snarkjs").bigInt;
+
+exports.hash0 = function (left, right) {
+    return poseidon([left, right]);
+};
+
+exports.hash1 = function (key, value) {
+    return poseidon([key, value, bigInt.one]);
+};

src/smt_memdb.js

@@ -1,4 +1,4 @@
-const bigInt = require("snarkjs").bigInt;
+const bigInt = require("@tornado/snarkjs").bigInt;
 
 class SMTMemDb {
     constructor() {
@@ -17,7 +17,7 @@ class SMTMemDb {
     }
 
     _normalize(n) {
-        for (let i=0; i<n.length; i++) {
+        for (let i = 0; i < n.length; i++) {
             n[i] = bigInt(n[i]);
         }
     }
@@ -27,12 +27,20 @@ class SMTMemDb {
         return this.nodes[keyS];
     }
 
+    async multiGet(keys) {
+        const promises = [];
+        for (let i = 0; i < keys.length; i++) {
+            promises.push(this.get(keys[i]));
+        }
+        return await Promise.all(promises);
+    }
+
     async setRoot(rt) {
         this.root = rt;
     }
 
     async multiIns(inserts) {
-        for (let i=0; i<inserts.length; i++) {
+        for (let i = 0; i < inserts.length; i++) {
             const keyS = this._key2str(inserts[i][0]);
             this._normalize(inserts[i][1]);
             this.nodes[keyS] = inserts[i][1];
@@ -40,7 +48,7 @@ class SMTMemDb {
     }
 
     async multiDel(dels) {
-        for (let i=0; i<dels.length; i++) {
+        for (let i = 0; i < dels.length; i++) {
             const keyS = this._key2str(dels[i]);
             delete this.nodes[keyS];
         }

test/aliascheck.js

@@ -1,6 +1,6 @@
 const chai = require("chai");
 const path = require("path");
-const snarkjs = require("snarkjs");
+const snarkjs = require("@tornado/snarkjs");
 const compiler = require("circom");
 
 const assert = chai.assert;
@@ -13,7 +13,7 @@ function print(circuit, w, s) {
 
 function getBits(v, n) {
     const res = [];
-    for (let i=0; i<n; i++) {
+    for (let i = 0; i < n; i++) {
         if (v.shr(i).isOdd()) {
             res.push(bigInt.one);
         } else {
@@ -27,7 +27,7 @@ const q = bigInt("21888242871839275222246405745257275088548364400416034343698204
 
 describe("Aliascheck test", () => {
     let circuit;
-    before( async() => {
+    before(async () => {
         const cirDef = await compiler(path.join(__dirname, "circuits", "aliascheck_test.circom"));
 
         circuit = new snarkjs.Circuit(cirDef);
@@ -37,38 +37,38 @@ describe("Aliascheck test", () => {
 
     it("Satisfy the aliastest 0", async () => {
         const inp = getBits(bigInt.zero, 254);
-        circuit.calculateWitness({in: inp});
+        circuit.calculateWitness({ in: inp });
     });
 
     it("Satisfy the aliastest 3", async () => {
         const inp = getBits(bigInt(3), 254);
-        circuit.calculateWitness({in: inp});
+        circuit.calculateWitness({ in: inp });
     });
 
     it("Satisfy the aliastest q-1", async () => {
         const inp = getBits(q.sub(bigInt.one), 254);
-        circuit.calculateWitness({in: inp});
+        circuit.calculateWitness({ in: inp });
     });
 
     it("Nhot not satisfy an input of q", async () => {
         const inp = getBits(q, 254);
         try {
-            circuit.calculateWitness({in: inp});
+            circuit.calculateWitness({ in: inp });
             assert(false);
-        } catch(err) {
+        } catch (err) {
-            assert.equal(err.message, "Constraint doesn't match: 1 != 0");
+            assert(/Constraint\sdoesn't\smatch(.*)1\s!=\s0/.test(err.message));
+            assert(err.message.indexOf("1 != 0") >= 0);
         }
     });
 
     it("Nhot not satisfy all ones", async () => {
-
         const inp = getBits(bigInt(1).shl(254).sub(bigInt(1)), 254);
         try {
-            circuit.calculateWitness({in: inp});
+            circuit.calculateWitness({ in: inp });
             assert(false);
-        } catch(err) {
+        } catch (err) {
-                assert.equal(err.message, "Constraint doesn't match: 1 != 0");
+            assert(/Constraint\sdoesn't\smatch(.*)1\s!=\s0/.test(err.message));
+            assert(err.message.indexOf("1 != 0") >= 0);
         }
     });
-
 });

test/aliascheckbabyjub.js

@@ -0,0 +1,74 @@
+const chai = require("chai");
+const path = require("path");
+const snarkjs = require("@tornado/snarkjs");
+const compiler = require("circom");
+
+const assert = chai.assert;
+
+const bigInt = snarkjs.bigInt;
+
+function print(circuit, w, s) {
+    console.log(s + ": " + w[circuit.getSignalIdx(s)]);
+}
+
+function getBits(v, n) {
+    const res = [];
+    for (let i = 0; i < n; i++) {
+        if (v.shr(i).isOdd()) {
+            res.push(bigInt.one);
+        } else {
+            res.push(bigInt.zero);
+        }
+    }
+    return res;
+}
+
+const r = bigInt("2736030358979909402780800718157159386076813972158567259200215660948447373041");
+
+describe("Aliascheck test", () => {
+    let circuit;
+    before(async () => {
+        const cirDef = await compiler(path.join(__dirname, "circuits", "aliascheckbabyjub_test.circom"));
+
+        circuit = new snarkjs.Circuit(cirDef);
+
+        console.log("NConstrains: " + circuit.nConstraints);
+    });
+
+    it("Satisfy the aliastest 0", async () => {
+        const inp = getBits(bigInt.zero, 251);
+        circuit.calculateWitness({ in: inp });
+    });
+
+    it("Satisfy the aliastest 3", async () => {
+        const inp = getBits(bigInt(3), 251);
+        circuit.calculateWitness({ in: inp });
+    });
+
+    it("Satisfy the aliastest r-1", async () => {
+        const inp = getBits(r.sub(bigInt.one), 251);
+        circuit.calculateWitness({ in: inp });
+    });
+
+    it("Nhot not satisfy an input of r", async () => {
+        const inp = getBits(r, 251);
+        try {
+            circuit.calculateWitness({ in: inp });
+            assert(false);
+        } catch (err) {
+            assert(err.message.indexOf("Constraint doesn't match") >= 0);
+            assert(err.message.indexOf("1 != 0") >= 0);
+        }
+    });
+
+    it("Nhot not satisfy all ones", async () => {
+        const inp = getBits(bigInt(1).shl(251).sub(bigInt(1)), 251);
+        try {
+            circuit.calculateWitness({ in: inp });
+            assert(false);
+        } catch (err) {
+            assert(err.message.indexOf("Constraint doesn't match") >= 0);
+            assert(err.message.indexOf("1 != 0") >= 0);
+        }
+    });
+});

test/babyjub.js

@@ -1,12 +1,14 @@
 const chai = require("chai");
 const path = require("path");
-const snarkjs = require("snarkjs");
+const snarkjs = require("@tornado/snarkjs");
 const compiler = require("circom");
 
+const createBlakeHash = require("blake-hash");
+const eddsa = require("../src/eddsa.js");
+
 const assert = chai.assert;
 
-const bigInt = require("big-integer");
+const bigInt = require("@tornado/snarkjs").bigInt;
-
 
 describe("Baby Jub test", function () {
     let circuitAdd;
@@ -14,7 +16,7 @@ describe("Baby Jub test", function () {
 
     this.timeout(100000);
 
-    before( async() => {
+    before(async () => {
         const cirDefAdd = await compiler(path.join(__dirname, "circuits", "babyadd_tester.circom"));
         circuitAdd = new snarkjs.Circuit(cirDefAdd);
         console.log("NConstrains BabyAdd: " + circuitAdd.nConstraints);
@@ -22,15 +24,18 @@ describe("Baby Jub test", function () {
         const cirDefTest = await compiler(path.join(__dirname, "circuits", "babycheck_test.circom"));
         circuitTest = new snarkjs.Circuit(cirDefTest);
         console.log("NConstrains BabyTest: " + circuitTest.nConstraints);
+
+        const cirDefPbk = await compiler(path.join(__dirname, "circuits", "babypbk_test.circom"));
+        circuitPbk = new snarkjs.Circuit(cirDefPbk);
+        console.log("NConstrains BabyPbk: " + circuitPbk.nConstraints);
     });
 
     it("Should add point (0,1) and (0,1)", async () => {
-
+        const input = {
-        const input={
             x1: snarkjs.bigInt(0),
             y1: snarkjs.bigInt(1),
             x2: snarkjs.bigInt(0),
-            y2: snarkjs.bigInt(1)
+            y2: snarkjs.bigInt(1),
         };
 
         const w = circuitAdd.calculateWitness(input);
@@ -43,12 +48,11 @@ describe("Baby Jub test", function () {
     });
 
     it("Should add 2 same numbers", async () => {
-
+        const input = {
-        const input={
             x1: snarkjs.bigInt("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
             y1: snarkjs.bigInt("2626589144620713026669568689430873010625803728049924121243784502389097019475"),
             x2: snarkjs.bigInt("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
-            y2: snarkjs.bigInt("2626589144620713026669568689430873010625803728049924121243784502389097019475")
+            y2: snarkjs.bigInt("2626589144620713026669568689430873010625803728049924121243784502389097019475"),
         };
 
         const w = circuitAdd.calculateWitness(input);
@@ -61,12 +65,11 @@ describe("Baby Jub test", function () {
     });
 
     it("Should add 2 different numbers", async () => {
-
+        const input = {
-        const input={
             x1: snarkjs.bigInt("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
             y1: snarkjs.bigInt("2626589144620713026669568689430873010625803728049924121243784502389097019475"),
             x2: snarkjs.bigInt("16540640123574156134436876038791482806971768689494387082833631921987005038935"),
-            y2: snarkjs.bigInt("20819045374670962167435360035096875258406992893633759881276124905556507972311")
+            y2: snarkjs.bigInt("20819045374670962167435360035096875258406992893633759881276124905556507972311"),
         };
 
         const w = circuitAdd.calculateWitness(input);
@@ -83,18 +86,35 @@ describe("Baby Jub test", function () {
         assert(yout.equals(snarkjs.bigInt("14035240266687799601661095864649209771790948434046947201833777492504781204499")));
     });
 
-    it("Should check 0 is a valid poiny", async() => {
+    it("Should check 0 is a valid poiny", async () => {
-        const w = circuitTest.calculateWitness({x: 0, y:1});
+        const w = circuitTest.calculateWitness({ x: 0, y: 1 });
         assert(circuitTest.checkWitness(w));
     });
 
-    it("Should check 0 is an invalid poiny", async() => {
+    it("Should check 0 is an invalid poiny", async () => {
         try {
-            circuitTest.calculateWitness({x: 1, y: 0});
+            circuitTest.calculateWitness({ x: 1, y: 0 });
             assert(false, "Should be a valid point");
-        } catch(err) {
+        } catch (err) {
-            assert.equal(err.message, "Constraint doesn't match: 168700 != 1");
+            assert(/Constraint\sdoesn't\smatch(.*)168700\s!=\s1/.test(err.message));
+            assert(err.message.indexOf("168700 != 1") >= 0);
         }
     });
 
+    it("Should extract the public key from the private one", async () => {
+        const rawpvk = Buffer.from("0001020304050607080900010203040506070809000102030405060708090021", "hex");
+        const pvk = eddsa.pruneBuffer(createBlakeHash("blake512").update(rawpvk).digest().slice(0, 32));
+        const S = bigInt.leBuff2int(pvk).shr(3);
+
+        const A = eddsa.prv2pub(rawpvk);
+
+        const input = {
+            in: S,
+            Ax: A[0],
+            Ay: A[1],
+        };
+
+        const w = circuitPbk.calculateWitness(input);
+        assert(circuitPbk.checkWitness(w));
+    });
 });

test/babyjub_js.js

@@ -0,0 +1,162 @@
+const chai = require("chai");
+const path = require("path");
+const snarkjs = require("@tornado/snarkjs");
+const compiler = require("circom");
+const babyjub = require("../src/babyjub.js");
+
+const assert = chai.assert;
+
+// const bigInt = require("big-integer");
+
+describe("Baby Jub js test", function () {
+    this.timeout(100000);
+
+    it("Should add point (0,1) and (0,1)", () => {
+        const p1 = [snarkjs.bigInt(0), snarkjs.bigInt(1)];
+        const p2 = [snarkjs.bigInt(0), snarkjs.bigInt(1)];
+
+        const out = babyjub.addPoint(p1, p2);
+        assert(out[0].equals(0));
+        assert(out[1].equals(1));
+    });
+
+    it("Should base be 8*generator", () => {
+        let res;
+        res = babyjub.addPoint(babyjub.Generator, babyjub.Generator);
+        res = babyjub.addPoint(res, res);
+        res = babyjub.addPoint(res, res);
+
+        assert(res[0].equals(babyjub.Base8[0]));
+        assert(res[1].equals(babyjub.Base8[1]));
+    });
+
+    it("Should add 2 same numbers", () => {
+        const p1 = [
+            snarkjs.bigInt("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
+            snarkjs.bigInt("2626589144620713026669568689430873010625803728049924121243784502389097019475"),
+        ];
+        const p2 = [
+            snarkjs.bigInt("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
+            snarkjs.bigInt("2626589144620713026669568689430873010625803728049924121243784502389097019475"),
+        ];
+
+        const out = babyjub.addPoint(p1, p2);
+        assert(out[0].equals(snarkjs.bigInt("6890855772600357754907169075114257697580319025794532037257385534741338397365")));
+        assert(out[1].equals(snarkjs.bigInt("4338620300185947561074059802482547481416142213883829469920100239455078257889")));
+    });
+
+    it("Should add 2 different numbers", () => {
+        const p1 = [
+            snarkjs.bigInt("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
+            snarkjs.bigInt("2626589144620713026669568689430873010625803728049924121243784502389097019475"),
+        ];
+        const p2 = [
+            snarkjs.bigInt("16540640123574156134436876038791482806971768689494387082833631921987005038935"),
+            snarkjs.bigInt("20819045374670962167435360035096875258406992893633759881276124905556507972311"),
+        ];
+
+        const out = babyjub.addPoint(p1, p2);
+
+        assert(out[0].equals(snarkjs.bigInt("7916061937171219682591368294088513039687205273691143098332585753343424131937")));
+        assert(out[1].equals(snarkjs.bigInt("14035240266687799601661095864649209771790948434046947201833777492504781204499")));
+    });
+
+    it("should mulPointEscalar 0", () => {
+        const p = [
+            snarkjs.bigInt("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
+            snarkjs.bigInt("2626589144620713026669568689430873010625803728049924121243784502389097019475"),
+        ];
+
+        const r = babyjub.mulPointEscalar(p, snarkjs.bigInt("3"));
+        let r2 = babyjub.addPoint(p, p);
+        r2 = babyjub.addPoint(r2, p);
+        assert.equal(r2[0].toString(), r[0].toString());
+        assert.equal(r2[1].toString(), r[1].toString());
+        assert.equal(r[0].toString(), "19372461775513343691590086534037741906533799473648040012278229434133483800898");
+        assert.equal(r[1].toString(), "9458658722007214007257525444427903161243386465067105737478306991484593958249");
+    });
+
+    it("should mulPointEscalar 1", () => {
+        const p = [
+            snarkjs.bigInt("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
+            snarkjs.bigInt("2626589144620713026669568689430873010625803728049924121243784502389097019475"),
+        ];
+
+        const r = babyjub.mulPointEscalar(
+            p,
+            snarkjs.bigInt("14035240266687799601661095864649209771790948434046947201833777492504781204499")
+        );
+        assert.equal(r[0].toString(), "17070357974431721403481313912716834497662307308519659060910483826664480189605");
+        assert.equal(r[1].toString(), "4014745322800118607127020275658861516666525056516280575712425373174125159339");
+    });
+
+    it("should mulPointEscalar 2", () => {
+        const p = [
+            snarkjs.bigInt("6890855772600357754907169075114257697580319025794532037257385534741338397365"),
+            snarkjs.bigInt("4338620300185947561074059802482547481416142213883829469920100239455078257889"),
+        ];
+
+        const r = babyjub.mulPointEscalar(
+            p,
+            snarkjs.bigInt("20819045374670962167435360035096875258406992893633759881276124905556507972311")
+        );
+        assert.equal(r[0].toString(), "13563888653650925984868671744672725781658357821216877865297235725727006259983");
+        assert.equal(r[1].toString(), "8442587202676550862664528699803615547505326611544120184665036919364004251662");
+    });
+
+    it("should inCurve 1", () => {
+        const p = [
+            snarkjs.bigInt("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
+            snarkjs.bigInt("2626589144620713026669568689430873010625803728049924121243784502389097019475"),
+        ];
+        assert(babyjub.inCurve(p));
+    });
+
+    it("should inCurve 2", () => {
+        const p = [
+            snarkjs.bigInt("6890855772600357754907169075114257697580319025794532037257385534741338397365"),
+            snarkjs.bigInt("4338620300185947561074059802482547481416142213883829469920100239455078257889"),
+        ];
+        assert(babyjub.inCurve(p));
+    });
+
+    it("should inSubgroup 1", () => {
+        const p = [
+            snarkjs.bigInt("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
+            snarkjs.bigInt("2626589144620713026669568689430873010625803728049924121243784502389097019475"),
+        ];
+        assert(babyjub.inSubgroup(p));
+    });
+
+    it("should inSubgroup 2", () => {
+        const p = [
+            snarkjs.bigInt("6890855772600357754907169075114257697580319025794532037257385534741338397365"),
+            snarkjs.bigInt("4338620300185947561074059802482547481416142213883829469920100239455078257889"),
+        ];
+        assert(babyjub.inSubgroup(p));
+    });
+
+    it("should packPoint - unpackPoint 1", () => {
+        const p = [
+            snarkjs.bigInt("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
+            snarkjs.bigInt("2626589144620713026669568689430873010625803728049924121243784502389097019475"),
+        ];
+        const buf = babyjub.packPoint(p);
+        assert.equal(buf.toString("hex"), "53b81ed5bffe9545b54016234682e7b2f699bd42a5e9eae27ff4051bc698ce85");
+        const p2 = babyjub.unpackPoint(buf);
+        assert.equal(p2[0].toString(), "17777552123799933955779906779655732241715742912184938656739573121738514868268");
+        assert.equal(p2[1].toString(), "2626589144620713026669568689430873010625803728049924121243784502389097019475");
+    });
+
+    it("should packPoint - unpackPoint 2", () => {
+        const p = [
+            snarkjs.bigInt("6890855772600357754907169075114257697580319025794532037257385534741338397365"),
+            snarkjs.bigInt("4338620300185947561074059802482547481416142213883829469920100239455078257889"),
+        ];
+        const buf = babyjub.packPoint(p);
+        assert.equal(buf.toString("hex"), "e114eb17eddf794f063a68fecac515e3620e131976108555735c8b0773929709");
+        const p2 = babyjub.unpackPoint(buf);
+        assert.equal(p2[0].toString(), "6890855772600357754907169075114257697580319025794532037257385534741338397365");
+        assert.equal(p2[1].toString(), "4338620300185947561074059802482547481416142213883829469920100239455078257889");
+    });
+});

test/binsub.js

@@ -1,6 +1,6 @@
 const chai = require("chai");
 const path = require("path");
-const snarkjs = require("snarkjs");
+const snarkjs = require("@tornado/snarkjs");
 const compiler = require("circom");
 
 const assert = chai.assert;
@@ -11,21 +11,21 @@ function print(circuit, w, s) {
     console.log(s + ": " + w[circuit.getSignalIdx(s)]);
 }
 
-function checkSub(_a,_b, circuit) {
+function checkSub(_a, _b, circuit) {
-    let a=bigInt(_a);
+    let a = bigInt(_a);
-    let b=bigInt(_b);
+    let b = bigInt(_b);
     if (a.lesser(bigInt.zero)) a = a.add(bigInt.one.shl(16));
     if (b.lesser(bigInt.zero)) b = b.add(bigInt.one.shl(16));
-    const w = circuit.calculateWitness({a: a, b: b});
+    const w = circuit.calculateWitness({ a: a, b: b });
 
     let res = a.sub(b);
     if (res.lesser(bigInt.zero)) res = res.add(bigInt.one.shl(16));
-    assert( w[circuit.getSignalIdx("main.out")].equals(bigInt(res)) );
+    assert(w[circuit.getSignalIdx("main.out")].equals(bigInt(res)));
 }
 
 describe("BinSub test", () => {
     let circuit;
-    before( async() => {
+    before(async () => {
         const cirDef = await compiler(path.join(__dirname, "circuits", "binsub_test.circom"));
 
         circuit = new snarkjs.Circuit(cirDef);
@@ -34,23 +34,21 @@ describe("BinSub test", () => {
     });
 
     it("Should check variuos ege cases", async () => {
-        checkSub(0,0, circuit);
+        checkSub(0, 0, circuit);
-        checkSub(1,0, circuit);
+        checkSub(1, 0, circuit);
-        checkSub(-1,0, circuit);
+        checkSub(-1, 0, circuit);
-        checkSub(2,1, circuit);
+        checkSub(2, 1, circuit);
-        checkSub(2,2, circuit);
+        checkSub(2, 2, circuit);
-        checkSub(2,3, circuit);
+        checkSub(2, 3, circuit);
-        checkSub(2,-1, circuit);
+        checkSub(2, -1, circuit);
-        checkSub(2,-2, circuit);
+        checkSub(2, -2, circuit);
-        checkSub(2,-3, circuit);
+        checkSub(2, -3, circuit);
-        checkSub(-2,-3, circuit);
+        checkSub(-2, -3, circuit);
-        checkSub(-2,-2, circuit);
+        checkSub(-2, -2, circuit);
-        checkSub(-2,-1, circuit);
+        checkSub(-2, -1, circuit);
-        checkSub(-2,0, circuit);
+        checkSub(-2, 0, circuit);
-        checkSub(-2,1, circuit);
+        checkSub(-2, 1, circuit);
-        checkSub(-2,2, circuit);
+        checkSub(-2, 2, circuit);
-        checkSub(-2,3, circuit);
+        checkSub(-2, 3, circuit);
     });
-
-
 });

test/binsum.js

@@ -1,6 +1,6 @@
 const chai = require("chai");
 const path = require("path");
-const snarkjs = require("snarkjs");
+const snarkjs = require("@tornado/snarkjs");
 const crypto = require("crypto");
 
 const compiler = require("circom");
@@ -9,25 +9,23 @@ const assert = chai.assert;
 
 describe("Sum test", () => {
     it("Should create a constant circuit", async () => {
-
         const cirDef = await compiler(path.join(__dirname, "circuits", "constants_test.circom"));
         assert.equal(cirDef.nVars, 2);
 
         const circuit = new snarkjs.Circuit(cirDef);
 
-        const witness = circuit.calculateWitness({ "in": "0xd807aa98" });
+        const witness = circuit.calculateWitness({ in: "0xd807aa98" });
 
         assert(witness[0].equals(snarkjs.bigInt(1)));
         assert(witness[1].equals(snarkjs.bigInt("0xd807aa98")));
     });
     it("Should create a sum circuit", async () => {
-
         const cirDef = await compiler(path.join(__dirname, "circuits", "sum_test.circom"));
-        assert.equal(cirDef.nVars, 101);
+        assert.equal(cirDef.nVars, 97); // 32 (in1) + 32(in2) + 32(out) + 1 (carry)
 
         const circuit = new snarkjs.Circuit(cirDef);
 
-        const witness = circuit.calculateWitness({ "a": "111", "b": "222" });
+        const witness = circuit.calculateWitness({ a: "111", b: "222" });
 
         assert(witness[0].equals(snarkjs.bigInt(1)));
         assert(witness[1].equals(snarkjs.bigInt("333")));

test/circuits/aliascheckbabyjub_test.circom

@@ -0,0 +1,3 @@
+include "../../circuits/aliascheck.circom";
+
+component main = AliasCheckBabyJub()

test/circuits/babypbk_test.circom

@@ -0,0 +1,3 @@
+include "../../circuits/babyjub.circom";
+
+component main = BabyPbk();

test/circuits/eddsamimcsponge_test.circom

@@ -0,0 +1,3 @@
+include "../../circuits/eddsamimcsponge.circom";
+
+component main = EdDSAMiMCSpongeVerifier();

test/circuits/eddsaposeidon_test.circom

@@ -0,0 +1,3 @@
+include "../../circuits/eddsaposeidon.circom";
+
+component main = EdDSAPoseidonVerifier();

test/circuits/escalarmul_min_test.circom

@@ -7,8 +7,8 @@ template Main() {
 
     var i;
 
-    var base = [17777552123799933955779906779655732241715742912184938656739573121738514868268,
+    var base = [5299619240641551281634865583518297030282874472190772894086521144482721001553,
-                2626589144620713026669568689430873010625803728049924121243784502389097019475]
+                16950150798460657717958625567821834550301663161624707787222815936182638968203];
 
     component escalarMul = EscalarMul(256, base);
 

test/circuits/escalarmul_test.circom

@@ -6,8 +6,8 @@ template Main() {
     signal input in;
     signal output out[2];
 
-    var base = [17777552123799933955779906779655732241715742912184938656739573121738514868268,
+    var base = [5299619240641551281634865583518297030282874472190772894086521144482721001553,
-            2626589144620713026669568689430873010625803728049924121243784502389097019475]
+            16950150798460657717958625567821834550301663161624707787222815936182638968203];
 
 
     component n2b = Num2Bits(253);

test/circuits/escalarmul_test_min.circom

@@ -7,8 +7,8 @@ template Main() {
 
     var i;
 
-    var base = [17777552123799933955779906779655732241715742912184938656739573121738514868268,
+    var base = [5299619240641551281634865583518297030282874472190772894086521144482721001553,
-                2626589144620713026669568689430873010625803728049924121243784502389097019475]
+                16950150798460657717958625567821834550301663161624707787222815936182638968203];
 
     component escalarMul = EscalarMul(256, base);
 

test/circuits/escalarmulfix_test.circom

@@ -6,8 +6,8 @@ template Main() {
     signal input e;
     signal output out[2];
 
-    var base = [17777552123799933955779906779655732241715742912184938656739573121738514868268,
+    var base = [5299619240641551281634865583518297030282874472190772894086521144482721001553,
-            2626589144620713026669568689430873010625803728049924121243784502389097019475]
+            16950150798460657717958625567821834550301663161624707787222815936182638968203]
 
 
     component n2b = Num2Bits(253);

test/circuits/escalarmulw4table.circom

@@ -1,6 +1,6 @@
 include "../../circuits/escalarmulw4table.circom";
 
-var base = [17777552123799933955779906779655732241715742912184938656739573121738514868268,
+var base = [5299619240641551281634865583518297030282874472190772894086521144482721001553,
-            2626589144620713026669568689430873010625803728049924121243784502389097019475]
+            16950150798460657717958625567821834550301663161624707787222815936182638968203]
 
 component main = EscalarMulW4Table(base, 0);

test/circuits/escalarmulw4table_test.circom

@@ -1,6 +1,17 @@
 include "../../circuits/escalarmulw4table.circom";
 
-var base = [17777552123799933955779906779655732241715742912184938656739573121738514868268,
-            2626589144620713026669568689430873010625803728049924121243784502389097019475];
 
-component main = EscalarMulW4Table(base, 0);
+template Main() {
+    signal input in;
+    signal output out[16][2];
+    var base = [5299619240641551281634865583518297030282874472190772894086521144482721001553,
+                16950150798460657717958625567821834550301663161624707787222815936182638968203];
+
+    var escalarMul = EscalarMulW4Table(base, 0);
+    for (var i=0; i<16; i++) {
+        out[i][0] <== escalarMul[i][0]*in;
+        out[i][1] <== escalarMul[i][1]*in;
+    }
+}
+
+component main = Main();

test/circuits/escalarmulw4table_test3.circom

@@ -1,6 +1,17 @@
 include "../../circuits/escalarmulw4table.circom";
 
-var base = [17777552123799933955779906779655732241715742912184938656739573121738514868268,
-            2626589144620713026669568689430873010625803728049924121243784502389097019475]
 
-component main = EscalarMulW4Table(base, 3);
+template Main() {
+    signal input in;
+    signal output out[16][2];
+    var base = [5299619240641551281634865583518297030282874472190772894086521144482721001553,
+                16950150798460657717958625567821834550301663161624707787222815936182638968203];
+
+    var escalarMul = EscalarMulW4Table(base, 3);
+    for (var i=0; i<16; i++) {
+        out[i][0] <== escalarMul[i][0]*in;
+        out[i][1] <== escalarMul[i][1]*in;
+    }
+}
+
+component main = Main();

test/circuits/greatereqthan.circom

@@ -0,0 +1,4 @@
+
+include "../../circuits/comparators.circom";
+
+component main = GreaterEqThan(32);

test/circuits/greaterthan.circom

@@ -0,0 +1,4 @@
+
+include "../../circuits/comparators.circom";
+
+component main = GreaterThan(32);

test/circuits/lesseqthan.circom

@@ -0,0 +1,4 @@
+
+include "../../circuits/comparators.circom";
+
+component main = LessEqThan(32);

test/circuits/mimc_sponge_hash_test.circom

@@ -0,0 +1,3 @@
+include "../../circuits/mimcsponge.circom"
+
+component main = MiMCSponge(2, 3);

test/circuits/mimc_sponge_test.circom

@@ -0,0 +1,3 @@
+include "../../circuits/mimcsponge.circom"
+
+component main = MiMCFeistel(220);

test/circuits/mux1_1.circom

@@ -0,0 +1,31 @@
+include "../../circuits/mux1.circom";
+include "../../circuits/bitify.circom";
+
+
+template Constants() {
+    var i;
+    signal output out[2];
+
+    out[0] <== 37;
+    out[1] <== 47;
+}
+
+template Main() {
+    var i;
+    signal private input selector;
+    signal output out;
+
+    component mux = Mux1();
+    component n2b = Num2Bits(1);
+    component cst = Constants();
+
+    selector ==> n2b.in;
+    n2b.out[0] ==> mux.s;
+    for (i=0; i<2; i++) {
+        cst.out[i] ==> mux.c[i];
+    }
+
+    mux.out ==> out;
+}
+
+component main = Main();

test/circuits/mux2_1.circom

@@ -0,0 +1,35 @@
+include "../../circuits/mux2.circom";
+include "../../circuits/bitify.circom";
+
+
+template Constants() {
+    var i;
+    signal output out[4];
+
+    out[0] <== 37;
+    out[1] <== 47;
+    out[2] <== 53;
+    out[3] <== 71;
+}
+
+template Main() {
+    var i;
+    signal private input selector;
+    signal output out;
+
+    component mux = Mux2();
+    component n2b = Num2Bits(2);
+    component cst = Constants();
+
+    selector ==> n2b.in;
+    for (i=0; i<2; i++) {
+        n2b.out[i] ==> mux.s[i];
+    }
+    for (i=0; i<4; i++) {
+        cst.out[i] ==> mux.c[i];
+    }
+
+    mux.out ==> out;
+}
+
+component main = Main();

test/circuits/poseidon2_test.circom

@@ -0,0 +1,3 @@
+include "../../circuits/poseidon.circom"
+
+component main = Poseidon(2);

test/circuits/poseidon4_test.circom

@@ -0,0 +1,3 @@
+include "../../circuits/poseidon.circom"
+
+component main = Poseidon(4);

test/circuits/sha256_test448.circom

@@ -0,0 +1,3 @@
+include "../../circuits/sha256/sha256.circom";
+
+component main = Sha256(448);

test/circuits/sha256_test512.circom

@@ -0,0 +1,3 @@
+include "../../circuits/sha256/sha256.circom";
+
+component main = Sha256(512);

test/comparators.js

@@ -1,6 +1,6 @@
 const chai = require("chai");
 const path = require("path");
-const snarkjs = require("snarkjs");
+const snarkjs = require("@tornado/snarkjs");
 const crypto = require("crypto");
 
 const compiler = require("circom");
@@ -8,21 +8,21 @@ const compiler = require("circom");
 const assert = chai.assert;
 
 describe("Sum test", () => {
-    it("Should create a iszero circuit", async() => {
+    it("Should create a iszero circuit", async () => {
         const cirDef = await compiler(path.join(__dirname, "circuits", "iszero.circom"));
 
         const circuit = new snarkjs.Circuit(cirDef);
 
         let witness;
-        witness = circuit.calculateWitness({ "in": 111});
+        witness = circuit.calculateWitness({ in: 111 });
         assert(witness[0].equals(snarkjs.bigInt(1)));
         assert(witness[1].equals(snarkjs.bigInt(0)));
 
-        witness = circuit.calculateWitness({ "in": 0 });
+        witness = circuit.calculateWitness({ in: 0 });
         assert(witness[0].equals(snarkjs.bigInt(1)));
         assert(witness[1].equals(snarkjs.bigInt(1)));
     });
-    it("Should create a isequal circuit", async() => {
+    it("Should create a isequal circuit", async () => {
         const cirDef = await compiler(path.join(__dirname, "circuits", "isequal.circom"));
 
         const circuit = new snarkjs.Circuit(cirDef);
@@ -36,7 +36,7 @@ describe("Sum test", () => {
         assert(witness[0].equals(snarkjs.bigInt(1)));
         assert(witness[1].equals(snarkjs.bigInt(1)));
     });
-    it("Should create a comparison", async() => {
+    it("Should create a comparison lessthan", async () => {
         const cirDef = await compiler(path.join(__dirname, "circuits", "lessthan.circom"));
 
         const circuit = new snarkjs.Circuit(cirDef);
@@ -74,4 +74,120 @@ describe("Sum test", () => {
         assert(witness[0].equals(snarkjs.bigInt(1)));
         assert(witness[1].equals(snarkjs.bigInt(0)));
     });
+    it("Should create a comparison lesseqthan", async () => {
+        const cirDef = await compiler(path.join(__dirname, "circuits", "lesseqthan.circom"));
+
+        const circuit = new snarkjs.Circuit(cirDef);
+
+        let witness;
+        witness = circuit.calculateWitness({ "in[0]": "333", "in[1]": "444" });
+        assert(witness[0].equals(snarkjs.bigInt(1)));
+        assert(witness[1].equals(snarkjs.bigInt(1)));
+
+        witness = circuit.calculateWitness({ "in[0]": "1", "in[1]": "1" });
+        assert(witness[0].equals(snarkjs.bigInt(1)));
+        assert(witness[1].equals(snarkjs.bigInt(1)));
+
+        witness = circuit.calculateWitness({ "in[0]": "661", "in[1]": "660" });
+        assert(witness[0].equals(snarkjs.bigInt(1)));
+        assert(witness[1].equals(snarkjs.bigInt(0)));
+
+        witness = circuit.calculateWitness({ "in[0]": "0", "in[1]": "1" });
+        assert(witness[0].equals(snarkjs.bigInt(1)));
+        assert(witness[1].equals(snarkjs.bigInt(1)));
+
+        witness = circuit.calculateWitness({ "in[0]": "0", "in[1]": "444" });
+        assert(witness[0].equals(snarkjs.bigInt(1)));
+        assert(witness[1].equals(snarkjs.bigInt(1)));
+
+        witness = circuit.calculateWitness({ "in[0]": "1", "in[1]": "0" });
+        assert(witness[0].equals(snarkjs.bigInt(1)));
+        assert(witness[1].equals(snarkjs.bigInt(0)));
+
+        witness = circuit.calculateWitness({ "in[0]": "555", "in[1]": "0" });
+        assert(witness[0].equals(snarkjs.bigInt(1)));
+        assert(witness[1].equals(snarkjs.bigInt(0)));
+
+        witness = circuit.calculateWitness({ "in[0]": "0", "in[1]": "0" });
+        assert(witness[0].equals(snarkjs.bigInt(1)));
+        assert(witness[1].equals(snarkjs.bigInt(1)));
+    });
+    it("Should create a comparison greaterthan", async () => {
+        const cirDef = await compiler(path.join(__dirname, "circuits", "greaterthan.circom"));
+
+        const circuit = new snarkjs.Circuit(cirDef);
+
+        let witness;
+        witness = circuit.calculateWitness({ "in[0]": "333", "in[1]": "444" });
+        assert(witness[0].equals(snarkjs.bigInt(1)));
+        assert(witness[1].equals(snarkjs.bigInt(0)));
+
+        witness = circuit.calculateWitness({ "in[0]": "1", "in[1]": "1" });
+        assert(witness[0].equals(snarkjs.bigInt(1)));
+        assert(witness[1].equals(snarkjs.bigInt(0)));
+
+        witness = circuit.calculateWitness({ "in[0]": "661", "in[1]": "660" });
+        assert(witness[0].equals(snarkjs.bigInt(1)));
+        assert(witness[1].equals(snarkjs.bigInt(1)));
+
+        witness = circuit.calculateWitness({ "in[0]": "0", "in[1]": "1" });
+        assert(witness[0].equals(snarkjs.bigInt(1)));
+        assert(witness[1].equals(snarkjs.bigInt(0)));
+
+        witness = circuit.calculateWitness({ "in[0]": "0", "in[1]": "444" });
+        assert(witness[0].equals(snarkjs.bigInt(1)));
+        assert(witness[1].equals(snarkjs.bigInt(0)));
+
+        witness = circuit.calculateWitness({ "in[0]": "1", "in[1]": "0" });
+        assert(witness[0].equals(snarkjs.bigInt(1)));
+        assert(witness[1].equals(snarkjs.bigInt(1)));
+
+        witness = circuit.calculateWitness({ "in[0]": "555", "in[1]": "0" });
+        assert(witness[0].equals(snarkjs.bigInt(1)));
+        assert(witness[1].equals(snarkjs.bigInt(1)));
+
+        witness = circuit.calculateWitness({ "in[0]": "0", "in[1]": "0" });
+        assert(witness[0].equals(snarkjs.bigInt(1)));
+        assert(witness[1].equals(snarkjs.bigInt(0)));
+    });
+    it("Should create a comparison greatereqthan", async () => {
+        const cirDef = await compiler(path.join(__dirname, "circuits", "greatereqthan.circom"));
+
+        const circuit = new snarkjs.Circuit(cirDef);
+
+        console.log("NConstraints BalancesUpdater: " + circuit.nConstraints);
+
+        let witness;
+        witness = circuit.calculateWitness({ "in[0]": "333", "in[1]": "444" });
+        assert(witness[0].equals(snarkjs.bigInt(1)));
+        assert(witness[1].equals(snarkjs.bigInt(0)));
+
+        witness = circuit.calculateWitness({ "in[0]": "1", "in[1]": "1" });
+        assert(witness[0].equals(snarkjs.bigInt(1)));
+        assert(witness[1].equals(snarkjs.bigInt(1)));
+
+        witness = circuit.calculateWitness({ "in[0]": "661", "in[1]": "660" });
+        assert(witness[0].equals(snarkjs.bigInt(1)));
+        assert(witness[1].equals(snarkjs.bigInt(1)));
+
+        witness = circuit.calculateWitness({ "in[0]": "0", "in[1]": "1" });
+        assert(witness[0].equals(snarkjs.bigInt(1)));
+        assert(witness[1].equals(snarkjs.bigInt(0)));
+
+        witness = circuit.calculateWitness({ "in[0]": "0", "in[1]": "444" });
+        assert(witness[0].equals(snarkjs.bigInt(1)));
+        assert(witness[1].equals(snarkjs.bigInt(0)));
+
+        witness = circuit.calculateWitness({ "in[0]": "1", "in[1]": "0" });
+        assert(witness[0].equals(snarkjs.bigInt(1)));
+        assert(witness[1].equals(snarkjs.bigInt(1)));
+
+        witness = circuit.calculateWitness({ "in[0]": "555", "in[1]": "0" });
+        assert(witness[0].equals(snarkjs.bigInt(1)));
+        assert(witness[1].equals(snarkjs.bigInt(1)));
+
+        witness = circuit.calculateWitness({ "in[0]": "0", "in[1]": "0" });
+        assert(witness[0].equals(snarkjs.bigInt(1)));
+        assert(witness[1].equals(snarkjs.bigInt(1)));
+    });
 });

test/eddsa.js

@@ -1,6 +1,6 @@
 const chai = require("chai");
 const path = require("path");
-const snarkjs = require("snarkjs");
+const snarkjs = require("@tornado/snarkjs");
 const compiler = require("circom");
 // const crypto = require("crypto");
 
@@ -17,9 +17,9 @@ function print(circuit, w, s) {
 
 function buffer2bits(buff) {
     const res = [];
-    for (let i=0; i<buff.length; i++) {
+    for (let i = 0; i < buff.length; i++) {
-        for (let j=0; j<8; j++) {
+        for (let j = 0; j < 8; j++) {
-            if ((buff[i]>>j)&1) {
+            if ((buff[i] >> j) & 1) {
                 res.push(bigInt.one);
             } else {
                 res.push(bigInt.zero);
@@ -29,13 +29,12 @@ function buffer2bits(buff) {
     return res;
 }
 
-
 describe("EdDSA test", function () {
     let circuit;
 
     this.timeout(100000);
 
-    before( async () => {
+    before(async () => {
         const cirDef = await compiler(path.join(__dirname, "circuits", "eddsa_test.circom"));
 
         circuit = new snarkjs.Circuit(cirDef);
@@ -46,7 +45,7 @@ describe("EdDSA test", function () {
     it("Sign a single 10 bytes from 0 to 9", async () => {
         const msg = Buffer.from("00010203040506070809", "hex");
 
-//        const prvKey = crypto.randomBytes(32);
+        //        const prvKey = crypto.randomBytes(32);
 
         const prvKey = Buffer.from("0001020304050607080900010203040506070809000102030405060708090001", "hex");
 
@@ -66,9 +65,8 @@ describe("EdDSA test", function () {
         const sBits = buffer2bits(pSignature.slice(32, 64));
         const aBits = buffer2bits(pPubKey);
 
-        const w = circuit.calculateWitness({A: aBits, R8: r8Bits, S: sBits, msg: msgBits});
+        const w = circuit.calculateWitness({ A: aBits, R8: r8Bits, S: sBits, msg: msgBits });
 
         assert(circuit.checkWitness(w));
-
     });
 });

test/eddsa_js.js

@@ -0,0 +1,75 @@
+const chai = require("chai");
+const snarkjs = require("@tornado/snarkjs");
+
+const eddsa = require("../src/eddsa.js");
+const babyJub = require("../src/babyjub.js");
+
+const assert = chai.assert;
+
+const bigInt = snarkjs.bigInt;
+
+describe("EdDSA js test", function () {
+    this.timeout(100000);
+
+    it("Sign (using Mimc7) a single 10 bytes from 0 to 9", () => {
+        const msgBuf = Buffer.from("00010203040506070809", "hex");
+        const msg = bigInt.leBuff2int(msgBuf);
+
+        //  const prvKey = crypto.randomBytes(32);
+
+        const prvKey = Buffer.from("0001020304050607080900010203040506070809000102030405060708090001", "hex");
+
+        const pubKey = eddsa.prv2pub(prvKey);
+
+        assert.equal(pubKey[0].toString(), "13277427435165878497778222415993513565335242147425444199013288855685581939618");
+        assert.equal(pubKey[1].toString(), "13622229784656158136036771217484571176836296686641868549125388198837476602820");
+
+        const pPubKey = babyJub.packPoint(pubKey);
+
+        const signature = eddsa.signMiMC(prvKey, msg);
+        assert.equal(signature.R8[0].toString(), "11384336176656855268977457483345535180380036354188103142384839473266348197733");
+        assert.equal(signature.R8[1].toString(), "15383486972088797283337779941324724402501462225528836549661220478783371668959");
+        assert.equal(signature.S.toString(), "2523202440825208709475937830811065542425109372212752003460238913256192595070");
+
+        const pSignature = eddsa.packSignature(signature);
+        assert.equal(
+            pSignature.toString("hex"),
+            "" +
+                "dfedb4315d3f2eb4de2d3c510d7a987dcab67089c8ace06308827bf5bcbe02a2" +
+                "7ed40dab29bf993c928e789d007387998901a24913d44fddb64b1f21fc149405"
+        );
+
+        const uSignature = eddsa.unpackSignature(pSignature);
+        assert(eddsa.verifyMiMC(msg, uSignature, pubKey));
+    });
+
+    it("Sign (using Poseidon) a single 10 bytes from 0 to 9", () => {
+        const msgBuf = Buffer.from("00010203040506070809", "hex");
+        const msg = bigInt.leBuff2int(msgBuf);
+
+        const prvKey = Buffer.from("0001020304050607080900010203040506070809000102030405060708090001", "hex");
+
+        const pubKey = eddsa.prv2pub(prvKey);
+
+        assert.equal(pubKey[0].toString(), "13277427435165878497778222415993513565335242147425444199013288855685581939618");
+        assert.equal(pubKey[1].toString(), "13622229784656158136036771217484571176836296686641868549125388198837476602820");
+
+        const pPubKey = babyJub.packPoint(pubKey);
+
+        const signature = eddsa.signPoseidon(prvKey, msg);
+        assert.equal(signature.R8[0].toString(), "11384336176656855268977457483345535180380036354188103142384839473266348197733");
+        assert.equal(signature.R8[1].toString(), "15383486972088797283337779941324724402501462225528836549661220478783371668959");
+        assert.equal(signature.S.toString(), "1398758333392199195742243841591064350253744445503462896781493968760929513778");
+
+        const pSignature = eddsa.packSignature(signature);
+        assert.equal(
+            pSignature.toString("hex"),
+            "" +
+                "dfedb4315d3f2eb4de2d3c510d7a987dcab67089c8ace06308827bf5bcbe02a2" +
+                "32f16b0f2f4c4e1169aa59685637e1429b6581a9531d058d65f4ab224eab1703"
+        );
+
+        const uSignature = eddsa.unpackSignature(pSignature);
+        assert(eddsa.verifyPoseidon(msg, uSignature, pubKey));
+    });
+});

test/eddsamimc.js

@@ -1,6 +1,6 @@
 const chai = require("chai");
 const path = require("path");
-const snarkjs = require("snarkjs");
+const snarkjs = require("@tornado/snarkjs");
 const compiler = require("circom");
 
 const eddsa = require("../src/eddsa.js");
@@ -9,17 +9,17 @@ const assert = chai.assert;
 
 const bigInt = snarkjs.bigInt;
 
-describe("EdDSA test", function () {
+describe("EdDSA MiMC test", function () {
     let circuit;
 
     this.timeout(100000);
 
-    before( async () => {
+    before(async () => {
         const cirDef = await compiler(path.join(__dirname, "circuits", "eddsamimc_test.circom"));
 
         circuit = new snarkjs.Circuit(cirDef);
 
-        console.log("NConstrains EdDSA: " + circuit.nConstraints);
+        console.log("NConstrains EdDSA MiMC: " + circuit.nConstraints);
     });
 
     it("Sign a single number", async () => {
@@ -40,7 +40,8 @@ describe("EdDSA test", function () {
             R8x: signature.R8[0],
             R8y: signature.R8[1],
             S: signature.S,
-            M: msg});
+            M: msg,
+        });
 
         assert(circuit.checkWitness(w));
     });
@@ -52,7 +53,6 @@ describe("EdDSA test", function () {
 
         const pubKey = eddsa.prv2pub(prvKey);
 
-
         const signature = eddsa.signMiMC(prvKey, msg);
 
         assert(eddsa.verifyMiMC(msg, signature, pubKey));
@@ -64,14 +64,14 @@ describe("EdDSA test", function () {
                 R8x: signature.R8[0].add(bigInt(1)),
                 R8y: signature.R8[1],
                 S: signature.S,
-                M: msg});
+                M: msg,
+            });
             assert(false);
-        } catch(err) {
+        } catch (err) {
-            assert.equal(err.message, "Constraint doesn't match: 1 != 0");
+            assert(/Constraint\sdoesn't\smatch(.*)1\s!=\s0/.test(err.message));
         }
     });
 
-
     it("Test a dissabled circuit with a bad signature", async () => {
         const msg = bigInt(1234);
 
@@ -79,7 +79,6 @@ describe("EdDSA test", function () {
 
         const pubKey = eddsa.prv2pub(prvKey);
 
-
         const signature = eddsa.signMiMC(prvKey, msg);
 
         assert(eddsa.verifyMiMC(msg, signature, pubKey));
@@ -91,7 +90,8 @@ describe("EdDSA test", function () {
             R8x: signature.R8[0].add(bigInt(1)),
             R8y: signature.R8[1],
             S: signature.S,
-            M: msg});
+            M: msg,
+        });
 
         assert(circuit.checkWitness(w));
     });

test/eddsamimcsponge.js

@@ -0,0 +1,99 @@
+const chai = require("chai");
+const path = require("path");
+const snarkjs = require("@tornado/snarkjs");
+const compiler = require("circom");
+
+const eddsa = require("../src/eddsa.js");
+
+const assert = chai.assert;
+
+const bigInt = snarkjs.bigInt;
+
+describe("EdDSA MiMCSponge test", function () {
+    let circuit;
+
+    this.timeout(100000);
+
+    before(async () => {
+        const cirDef = await compiler(path.join(__dirname, "circuits", "eddsamimcsponge_test.circom"));
+
+        circuit = new snarkjs.Circuit(cirDef);
+
+        console.log("NConstrains EdDSA MiMCSponge: " + circuit.nConstraints);
+    });
+
+    it("Sign a single number", async () => {
+        const msg = bigInt(1234);
+
+        const prvKey = Buffer.from("0001020304050607080900010203040506070809000102030405060708090001", "hex");
+
+        const pubKey = eddsa.prv2pub(prvKey);
+
+        const signature = eddsa.signMiMCSponge(prvKey, msg);
+
+        assert(eddsa.verifyMiMCSponge(msg, signature, pubKey));
+
+        const w = circuit.calculateWitness({
+            enabled: 1,
+            Ax: pubKey[0],
+            Ay: pubKey[1],
+            R8x: signature.R8[0],
+            R8y: signature.R8[1],
+            S: signature.S,
+            M: msg,
+        });
+
+        assert(circuit.checkWitness(w));
+    });
+
+    it("Detect Invalid signature", async () => {
+        const msg = bigInt(1234);
+
+        const prvKey = Buffer.from("0001020304050607080900010203040506070809000102030405060708090001", "hex");
+
+        const pubKey = eddsa.prv2pub(prvKey);
+
+        const signature = eddsa.signMiMCSponge(prvKey, msg);
+
+        assert(eddsa.verifyMiMCSponge(msg, signature, pubKey));
+        try {
+            const w = circuit.calculateWitness({
+                enabled: 1,
+                Ax: pubKey[0],
+                Ay: pubKey[1],
+                R8x: signature.R8[0].add(bigInt(1)),
+                R8y: signature.R8[1],
+                S: signature.S,
+                M: msg,
+            });
+            assert(false);
+        } catch (err) {
+            assert(err.message.indexOf("Constraint doesn't match") >= 0);
+            assert(err.message.indexOf("1 != 0") >= 0);
+        }
+    });
+
+    it("Test a dissabled circuit with a bad signature", async () => {
+        const msg = bigInt(1234);
+
+        const prvKey = Buffer.from("0001020304050607080900010203040506070809000102030405060708090001", "hex");
+
+        const pubKey = eddsa.prv2pub(prvKey);
+
+        const signature = eddsa.signMiMCSponge(prvKey, msg);
+
+        assert(eddsa.verifyMiMCSponge(msg, signature, pubKey));
+
+        const w = circuit.calculateWitness({
+            enabled: 0,
+            Ax: pubKey[0],
+            Ay: pubKey[1],
+            R8x: signature.R8[0].add(bigInt(1)),
+            R8y: signature.R8[1],
+            S: signature.S,
+            M: msg,
+        });
+
+        assert(circuit.checkWitness(w));
+    });
+});

test/eddsaposeidon.js

@@ -0,0 +1,98 @@
+const chai = require("chai");
+const path = require("path");
+const snarkjs = require("@tornado/snarkjs");
+const compiler = require("circom");
+
+const eddsa = require("../src/eddsa.js");
+
+const assert = chai.assert;
+
+const bigInt = snarkjs.bigInt;
+
+describe("EdDSA Poseidon test", function () {
+    let circuit;
+
+    this.timeout(100000);
+
+    before(async () => {
+        const cirDef = await compiler(path.join(__dirname, "circuits", "eddsaposeidon_test.circom"));
+
+        circuit = new snarkjs.Circuit(cirDef);
+
+        console.log("NConstrains EdDSA Poseidon: " + circuit.nConstraints);
+    });
+
+    it("Sign a single number", async () => {
+        const msg = bigInt(1234);
+
+        const prvKey = Buffer.from("0001020304050607080900010203040506070809000102030405060708090001", "hex");
+
+        const pubKey = eddsa.prv2pub(prvKey);
+
+        const signature = eddsa.signPoseidon(prvKey, msg);
+
+        assert(eddsa.verifyPoseidon(msg, signature, pubKey));
+
+        const w = circuit.calculateWitness({
+            enabled: 1,
+            Ax: pubKey[0],
+            Ay: pubKey[1],
+            R8x: signature.R8[0],
+            R8y: signature.R8[1],
+            S: signature.S,
+            M: msg,
+        });
+
+        assert(circuit.checkWitness(w));
+    });
+
+    it("Detect Invalid signature", async () => {
+        const msg = bigInt(1234);
+
+        const prvKey = Buffer.from("0001020304050607080900010203040506070809000102030405060708090001", "hex");
+
+        const pubKey = eddsa.prv2pub(prvKey);
+
+        const signature = eddsa.signPoseidon(prvKey, msg);
+
+        assert(eddsa.verifyPoseidon(msg, signature, pubKey));
+        try {
+            circuit.calculateWitness({
+                enabled: 1,
+                Ax: pubKey[0],
+                Ay: pubKey[1],
+                R8x: signature.R8[0].add(bigInt(1)),
+                R8y: signature.R8[1],
+                S: signature.S,
+                M: msg,
+            });
+            assert(false);
+        } catch (err) {
+            assert(/Constraint\sdoesn't\smatch(.*)1\s!=\s0/.test(err.message));
+        }
+    });
+
+    it("Test a dissabled circuit with a bad signature", async () => {
+        const msg = bigInt(1234);
+
+        const prvKey = Buffer.from("0001020304050607080900010203040506070809000102030405060708090001", "hex");
+
+        const pubKey = eddsa.prv2pub(prvKey);
+
+        const signature = eddsa.signPoseidon(prvKey, msg);
+
+        assert(eddsa.verifyPoseidon(msg, signature, pubKey));
+
+        const w = circuit.calculateWitness({
+            enabled: 0,
+            Ax: pubKey[0],
+            Ay: pubKey[1],
+            R8x: signature.R8[0].add(bigInt(1)),
+            R8y: signature.R8[1],
+            S: signature.S,
+            M: msg,
+        });
+
+        assert(circuit.checkWitness(w));
+    });
+});

test/escalarmul.js

@@ -1,21 +1,20 @@
 const chai = require("chai");
 const path = require("path");
-const snarkjs = require("snarkjs");
+const snarkjs = require("@tornado/snarkjs");
 const compiler = require("circom");
 
 const assert = chai.assert;
 
 const bigInt = snarkjs.bigInt;
 
-
+const q = bigInt("21888242871839275222246405745257275088548364400416034343698204186575808495617");
-const q=bigInt("21888242871839275222246405745257275088548364400416034343698204186575808495617");
+function addPoint(a, b) {
-function addPoint(a,b) {
     const cta = bigInt("168700");
     const d = bigInt("168696");
 
     const res = [];
-    res[0] = bigInt((a[0]*b[1] + b[0]*a[1]) *  bigInt(bigInt.one + d*a[0]*b[0]*a[1]*b[1]).inverse(q)).affine(q);
+    res[0] = bigInt((a[0] * b[1] + b[0] * a[1]) * bigInt(bigInt.one + d * a[0] * b[0] * a[1] * b[1]).inverse(q)).affine(q);
-    res[1] = bigInt((a[1]*b[1] - cta*a[0]*b[0]) * bigInt(bigInt.one - d*a[0]*b[0]*a[1]*b[1]).inverse(q)).affine(q);
+    res[1] = bigInt((a[1] * b[1] - cta * a[0] * b[0]) * bigInt(bigInt.one - d * a[0] * b[0] * a[1] * b[1]).inverse(q)).affine(q);
     return res;
 }
 
@@ -25,136 +24,140 @@ function print(circuit, w, s) {
 
 describe("Exponentioation test", () => {
     it("Should generate the Exponentiation table in k=0", async () => {
-
         const cirDef = await compiler(path.join(__dirname, "circuits", "escalarmulw4table_test.circom"));
 
-//        console.log(JSON.stringify(cirDef, null, 1));
+        //        console.log(JSON.stringify(cirDef, null, 1));
 
-//        assert.equal(cirDef.nVars, 2);
+        //        assert.equal(cirDef.nVars, 2);
 
         const circuit = new snarkjs.Circuit(cirDef);
 
         console.log("NConstrains: " + circuit.nConstraints);
 
-        const w = circuit.calculateWitness({});
+        const w = circuit.calculateWitness({ in: 1 });
-
-        let g = [bigInt("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
-                 bigInt("2626589144620713026669568689430873010625803728049924121243784502389097019475")]
-
-        dbl= [bigInt("0"), snarkjs.bigInt("1")];
-
-        for (let i=0; i<16; i++) {
-            const xout1 = w[circuit.getSignalIdx(`main.out[${i}][0]`)];
-            const yout1 = w[circuit.getSignalIdx(`main.out[${i}][1]`)];
-/*
-            console.log(xout1.toString());
-            console.log(yout1.toString());
-            console.log(dbl[0]);
-            console.log(dbl[1]);
-*/
-            assert(xout1.equals(dbl[0]));
-            assert(yout1.equals(dbl[1]));
-
-            dbl = addPoint([xout1, yout1],g);
-        }
-
-    });
-
-    it("Should generate the Exponentiation table in k=3", async () => {
-
-        const cirDef = await compiler(path.join(__dirname, "circuits", "escalarmulw4table_test3.circom"));
-
-//        console.log(JSON.stringify(cirDef, null, 1));
-
-//        assert.equal(cirDef.nVars, 2);
-
-        const circuit = new snarkjs.Circuit(cirDef);
-
-        console.log("NConstrains: " + circuit.nConstraints);
-
-        const w = circuit.calculateWitness({});
-
-        let g = [snarkjs.bigInt("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
-                 snarkjs.bigInt("2626589144620713026669568689430873010625803728049924121243784502389097019475")]
-
-        for (let i=0; i<12;i++) {
-            g = addPoint(g,g);
-        }
-
-        dbl= [snarkjs.bigInt("0"), snarkjs.bigInt("1")];
-
-        for (let i=0; i<16; i++) {
-            const xout1 = w[circuit.getSignalIdx(`main.out[${i}][0]`)];
-            const yout1 = w[circuit.getSignalIdx(`main.out[${i}][1]`)];
-
-/*
-            console.log(xout1.toString());
-            console.log(yout1.toString());
-            console.log(dbl[0]);
-            console.log(dbl[1]);
-*/
-            assert(xout1.equals(dbl[0]));
-            assert(yout1.equals(dbl[1]));
-
-            dbl = addPoint([xout1, yout1],g);
-        }
-
-    });
-
-    it("Should exponentiate g^31", async () => {
-        const cirDef = await compiler(path.join(__dirname, "circuits", "escalarmul_test.circom"));
-
-//        console.log(JSON.stringify(cirDef, null, 1));
-
-//        assert.equal(cirDef.nVars, 2);
-
-        const circuit = new snarkjs.Circuit(cirDef);
-
-        console.log("NConstrains: " + circuit.nConstraints);
-
-        const w = circuit.calculateWitness({"in": 31});
 
         assert(circuit.checkWitness(w));
 
-        let g = [snarkjs.bigInt("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
+        let g = [
-                 snarkjs.bigInt("2626589144620713026669568689430873010625803728049924121243784502389097019475")]
+            bigInt("5299619240641551281634865583518297030282874472190772894086521144482721001553"),
+            bigInt("16950150798460657717958625567821834550301663161624707787222815936182638968203"),
+        ];
+
+        dbl = [bigInt("0"), snarkjs.bigInt("1")];
+
+        for (let i = 0; i < 16; i++) {
+            const xout1 = w[circuit.getSignalIdx(`main.out[${i}][0]`)];
+            const yout1 = w[circuit.getSignalIdx(`main.out[${i}][1]`)];
+
+            // console.log(xout1.toString());
+            // console.log(yout1.toString());
+            // console.log(dbl[0]);
+            // console.log(dbl[1]);
+
+            assert(xout1.equals(dbl[0]));
+            assert(yout1.equals(dbl[1]));
+
+            dbl = addPoint([xout1, yout1], g);
+        }
+    });
+
+    it("Should generate the Exponentiation table in k=3", async () => {
+        const cirDef = await compiler(path.join(__dirname, "circuits", "escalarmulw4table_test3.circom"));
+
+        //        console.log(JSON.stringify(cirDef, null, 1));
+
+        //        assert.equal(cirDef.nVars, 2);
+
+        const circuit = new snarkjs.Circuit(cirDef);
+
+        console.log("NConstrains: " + circuit.nConstraints);
+
+        const w = circuit.calculateWitness({ in: 1 });
+
+        assert(circuit.checkWitness(w));
+
+        let g = [
+            snarkjs.bigInt("5299619240641551281634865583518297030282874472190772894086521144482721001553"),
+            snarkjs.bigInt("16950150798460657717958625567821834550301663161624707787222815936182638968203"),
+        ];
+
+        for (let i = 0; i < 12; i++) {
+            g = addPoint(g, g);
+        }
+
+        dbl = [snarkjs.bigInt("0"), snarkjs.bigInt("1")];
+
+        for (let i = 0; i < 16; i++) {
+            const xout1 = w[circuit.getSignalIdx(`main.out[${i}][0]`)];
+            const yout1 = w[circuit.getSignalIdx(`main.out[${i}][1]`)];
+
+            // console.log(xout1.toString());
+            // console.log(yout1.toString());
+            // console.log(dbl[0]);
+            // console.log(dbl[1]);
+
+            assert(xout1.equals(dbl[0]));
+            assert(yout1.equals(dbl[1]));
+
+            dbl = addPoint([xout1, yout1], g);
+        }
+    });
+
+    it("Should exponentiate g^31", async () => {
+        const cirDef = await compiler(path.join(__dirname, "circuits", "escalarmul_test.circom"), { reduceConstraints: true });
+
+        //        console.log(JSON.stringify(cirDef, null, 1));
+
+        //        assert.equal(cirDef.nVars, 2);
+
+        const circuit = new snarkjs.Circuit(cirDef);
+
+        console.log("NConstrains: " + circuit.nConstraints);
+
+        const w = circuit.calculateWitness({ in: 31 });
+
+        assert(circuit.checkWitness(w));
+
+        let g = [
+            snarkjs.bigInt("5299619240641551281634865583518297030282874472190772894086521144482721001553"),
+            snarkjs.bigInt("16950150798460657717958625567821834550301663161624707787222815936182638968203"),
+        ];
 
         let c = [0n, 1n];
 
-        for (let i=0; i<31;i++) {
+        for (let i = 0; i < 31; i++) {
-            c = addPoint(c,g);
+            c = addPoint(c, g);
         }
 
         const xout = w[circuit.getSignalIdx(`main.out[0]`)];
         const yout = w[circuit.getSignalIdx(`main.out[1]`)];
 
-/*
+        /*
         console.log(xout.toString());
         console.log(yout.toString());
 */
         assert(xout.equals(c[0]));
         assert(yout.equals(c[1]));
 
-        console.log("-------")
+        console.log("-------");
-        const w2 = circuit.calculateWitness({"in": (1n<<252n)+1n});
+        const w2 = circuit.calculateWitness({ in: (1n << 252n) + 1n });
 
         const xout2 = w2[circuit.getSignalIdx(`main.out[0]`)];
         const yout2 = w2[circuit.getSignalIdx(`main.out[1]`)];
 
         c = [g[0], g[1]];
-        for (let i=0; i<252;i++) {
+        for (let i = 0; i < 252; i++) {
-            c = addPoint(c,c);
+            c = addPoint(c, c);
         }
-        c = addPoint(c,g);
+        c = addPoint(c, g);
-/*
+
-        console.log(xout2.toString());
+        // console.log(xout2.toString());
-        console.log(yout2.toString());
+        // console.log(yout2.toString());
-        console.log(c[0].toString());
+        // console.log(c[0].toString());
-        console.log(c[1].toString());
+        // console.log(c[1].toString());
-*/
+
         assert(xout2.equals(c[0]));
         assert(yout2.equals(c[1]));
-
     }).timeout(10000000);
 
     it("Number of constrains for 256 bits", async () => {
@@ -164,5 +167,4 @@ describe("Exponentioation test", () => {
 
         console.log("NConstrains: " + circuit.nConstraints);
     }).timeout(10000000);
-
 });

test/escalarmulany.js

@@ -1,13 +1,12 @@
 const chai = require("chai");
 const path = require("path");
-const snarkjs = require("snarkjs");
+const snarkjs = require("@tornado/snarkjs");
 const compiler = require("circom");
 
 const assert = chai.assert;
 
 const bigInt = snarkjs.bigInt;
 
-
 function print(circuit, w, s) {
     console.log(s + ": " + w[circuit.getSignalIdx(s)]);
 }
@@ -18,19 +17,18 @@ describe("Escalarmul test", function () {
     this.timeout(100000);
 
     let g = [
-        snarkjs.bigInt("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
+        snarkjs.bigInt("5299619240641551281634865583518297030282874472190772894086521144482721001553"),
-        snarkjs.bigInt("2626589144620713026669568689430873010625803728049924121243784502389097019475")
+        snarkjs.bigInt("16950150798460657717958625567821834550301663161624707787222815936182638968203"),
     ];
 
-    before( async() => {
+    before(async () => {
         const cirDefEMulAny = await compiler(path.join(__dirname, "circuits", "escalarmulany_test.circom"));
         circuitEMulAny = new snarkjs.Circuit(cirDefEMulAny);
         console.log("NConstrains Escalarmul any: " + circuitEMulAny.nConstraints);
     });
 
     it("Should generate Same escalar mul", async () => {
-
+        const w = circuitEMulAny.calculateWitness({ e: 1, p: g });
-        const w = circuitEMulAny.calculateWitness({"e": 1, "p": g});
 
         assert(circuitEMulAny.checkWitness(w));
 
@@ -42,9 +40,8 @@ describe("Escalarmul test", function () {
     });
 
     it("If multiply by order should return 0", async () => {
-
         const r = bigInt("2736030358979909402780800718157159386076813972158567259200215660948447373041");
-        const w = circuitEMulAny.calculateWitness({"e": r, "p": g});
+        const w = circuitEMulAny.calculateWitness({ e: r, p: g });
 
         assert(circuitEMulAny.checkWitness(w));
 
@@ -54,6 +51,4 @@ describe("Escalarmul test", function () {
         assert(xout.equals(bigInt.zero));
         assert(yout.equals(bigInt.one));
     });
-
 });
-

test/escalarmulfix.js

@@ -1,6 +1,6 @@
 const chai = require("chai");
 const path = require("path");
-const snarkjs = require("snarkjs");
+const snarkjs = require("@tornado/snarkjs");
 const compiler = require("circom");
 const babyjub = require("../src/babyjub");
 
@@ -8,7 +8,6 @@ const assert = chai.assert;
 
 const bigInt = snarkjs.bigInt;
 
-
 function print(circuit, w, s) {
     console.log(s + ": " + w[circuit.getSignalIdx(s)]);
 }
@@ -18,15 +17,14 @@ describe("Escalarmul test", function () {
 
     this.timeout(100000);
 
-    before( async() => {
+    before(async () => {
         const cirDef = await compiler(path.join(__dirname, "circuits", "escalarmulfix_test.circom"));
         circuit = new snarkjs.Circuit(cirDef);
         console.log("NConstrains Escalarmul fix: " + circuit.nConstraints);
     });
 
     it("Should generate Same escalar mul", async () => {
-
+        const w = circuit.calculateWitness({ e: 0 });
-        const w = circuit.calculateWitness({"e": 0});
 
         assert(circuit.checkWitness(w));
 
@@ -38,8 +36,7 @@ describe("Escalarmul test", function () {
     });
 
     it("Should generate Same escalar mul", async () => {
-
+        const w = circuit.calculateWitness({ e: 1 });
-        const w = circuit.calculateWitness({"e": 1});
 
         assert(circuit.checkWitness(w));
 
@@ -50,9 +47,51 @@ describe("Escalarmul test", function () {
         assert(yout.equals(babyjub.Base8[1]));
     });
 
-    it("If multiply by order should return 0", async () => {
+    it("Should generate scalar mul of a specific constant", async () => {
+        const s = bigInt("2351960337287830298912035165133676222414898052661454064215017316447594616519");
+        const base8 = [
+            bigInt("5299619240641551281634865583518297030282874472190772894086521144482721001553"),
+            bigInt("16950150798460657717958625567821834550301663161624707787222815936182638968203"),
+        ];
 
-        const w = circuit.calculateWitness({"e": babyjub.subOrder });
+        const w = circuit.calculateWitness({ e: s });
+
+        assert(circuit.checkWitness(w));
+
+        const xout = w[circuit.getSignalIdx("main.out[0]")];
+        const yout = w[circuit.getSignalIdx("main.out[1]")];
+
+        const expectedRes = babyjub.mulPointEscalar(base8, s);
+
+        assert(xout.equals(expectedRes[0]));
+        assert(yout.equals(expectedRes[1]));
+    });
+
+    it("Should generate scalar mul of the firsts 50 elements", async () => {
+        const base8 = [
+            bigInt("5299619240641551281634865583518297030282874472190772894086521144482721001553"),
+            bigInt("16950150798460657717958625567821834550301663161624707787222815936182638968203"),
+        ];
+
+        for (let i = 0; i < 50; i++) {
+            const s = bigInt(i);
+
+            const w = circuit.calculateWitness({ e: s });
+
+            assert(circuit.checkWitness(w));
+
+            const xout = w[circuit.getSignalIdx("main.out[0]")];
+            const yout = w[circuit.getSignalIdx("main.out[1]")];
+
+            const expectedRes = babyjub.mulPointEscalar(base8, s);
+
+            assert(xout.equals(expectedRes[0]));
+            assert(yout.equals(expectedRes[1]));
+        }
+    });
+
+    it("If multiply by order should return 0", async () => {
+        const w = circuit.calculateWitness({ e: babyjub.subOrder });
 
         assert(circuit.checkWitness(w));
 
@@ -62,6 +101,4 @@ describe("Escalarmul test", function () {
         assert(xout.equals(bigInt.zero));
         assert(yout.equals(bigInt.one));
     });
-
 });
-

test/helpers/printsignal.js

@@ -1,13 +1,12 @@
-
+const snarkjs = require("@tornado/snarkjs");
-const snarkjs = require("snarkjs");
 
 const bigInt = snarkjs.bigInt;
 
 module.exports = function hexBits(cir, witness, sig, nBits) {
     let v = bigInt(0);
-    for (let i=nBits-1; i>=0; i--) {
+    for (let i = nBits - 1; i >= 0; i--) {
         v = v.shiftLeft(1);
-        const name = sig+"["+i+"]";
+        const name = sig + "[" + i + "]";
         const idx = cir.getSignalIdx(name);
         const vbit = bigInt(witness[idx].toString());
         if (vbit.equals(bigInt(1))) {
@@ -15,7 +14,7 @@ module.exports = function hexBits(cir, witness, sig, nBits) {
         } else if (vbit.equals(bigInt(0))) {
             v;
         } else {
-            console.log("Not Binary: "+name);
+            console.log("Not Binary: " + name);
         }
     }
     return v.toString(16);

test/mimccircuit.js

@@ -1,6 +1,6 @@
 const chai = require("chai");
 const path = require("path");
-const snarkjs = require("snarkjs");
+const snarkjs = require("@tornado/snarkjs");
 const compiler = require("circom");
 
 const mimcjs = require("../src/mimc7.js");
@@ -12,7 +12,7 @@ describe("MiMC Circuit test", function () {
 
     this.timeout(100000);
 
-    before( async () => {
+    before(async () => {
         const cirDef = await compiler(path.join(__dirname, "circuits", "mimc_test.circom"));
 
         circuit = new snarkjs.Circuit(cirDef);
@@ -21,15 +21,14 @@ describe("MiMC Circuit test", function () {
     });
 
     it("Should check constrain", async () => {
-        const w = circuit.calculateWitness({x_in: 1, k: 2});
+        const w = circuit.calculateWitness({ x_in: 1, k: 2 });
 
         const res = w[circuit.getSignalIdx("main.out")];
 
-        const res2 = mimcjs.hash(1,2,91);
+        const res2 = mimcjs.hash(1, 2, 91);
 
         assert.equal(res.toString(), res2.toString());
 
         assert(circuit.checkWitness(w));
-
     });
 });

test/mimccontract.js

@@ -1,4 +1,4 @@
-const TestRPC = require("ganache-cli");
+const ganache = require("ganache-cli");
 const Web3 = require("web3");
 const chai = require("chai");
 const mimcGenContract = require("../src/mimc_gencontract.js");
@@ -10,35 +10,31 @@ const log = (msg) => { if (process.env.MOCHA_VERBOSE) console.log(msg); };
 
 const SEED = "mimc";
 
-describe("MiMC Smart contract test", () => {
+describe("MiMC Smart contract test", function () {
     let testrpc;
     let web3;
     let mimc;
     let accounts;
 
+    this.timeout(100000);
+
     before(async () => {
-        testrpc = TestRPC.server({
+        web3 = new Web3(ganache.provider(), null, { transactionConfirmationBlocks: 1 });
-            ws: true,
-            gasLimit: 5800000,
-            total_accounts: 10,
-        });
-
-        testrpc.listen(8546, "127.0.0.1");
-
-        web3 = new Web3("ws://127.0.0.1:8546");
         accounts = await web3.eth.getAccounts();
     });
 
-    after(async () => testrpc.close());
-
     it("Should deploy the contract", async () => {
         const C = new web3.eth.Contract(mimcGenContract.abi);
 
         mimc = await C.deploy({
-            data: mimcGenContract.createCode(SEED, 91)
+            data: mimcGenContract.createCode(SEED, 91),
+            arguments: []
         }).send({
             gas: 1500000,
+            gasPrice: '30000000000000',
             from: accounts[0]
+        }).on("error", (error) => {
+            console.log("ERROR: "+error);
         });
     });
 

test/mimcspongecircuit.js

@@ -0,0 +1,56 @@
+const chai = require("chai");
+const path = require("path");
+const snarkjs = require("@tornado/snarkjs");
+const compiler = require("circom");
+
+const mimcjs = require("../src/mimcsponge.js");
+
+const assert = chai.assert;
+
+describe("MiMC Sponge Circuit test", function () {
+    let circuit;
+
+    this.timeout(100000);
+
+    it("Should check permutation", async () => {
+        const cirDef = await compiler(path.join(__dirname, "circuits", "mimc_sponge_test.circom"));
+
+        circuit = new snarkjs.Circuit(cirDef);
+
+        console.log("MiMC Feistel constraints: " + circuit.nConstraints);
+
+        const w = circuit.calculateWitness({ xL_in: 1, xR_in: 2, k: 3 });
+
+        const xLout = w[circuit.getSignalIdx("main.xL_out")];
+        const xRout = w[circuit.getSignalIdx("main.xR_out")];
+
+        const out2 = mimcjs.hash(1, 2, 3);
+
+        assert.equal(xLout.toString(), out2.xL.toString());
+        assert.equal(xRout.toString(), out2.xR.toString());
+
+        assert(circuit.checkWitness(w));
+    });
+
+    it("Should check hash", async () => {
+        const cirDef = await compiler(path.join(__dirname, "circuits", "mimc_sponge_hash_test.circom"));
+
+        circuit = new snarkjs.Circuit(cirDef);
+
+        console.log("MiMC Sponge constraints: " + circuit.nConstraints);
+
+        const w = circuit.calculateWitness({ ins: [1, 2], k: 0 });
+
+        const o1 = w[circuit.getSignalIdx("main.outs[0]")];
+        const o2 = w[circuit.getSignalIdx("main.outs[1]")];
+        const o3 = w[circuit.getSignalIdx("main.outs[2]")];
+
+        const out2 = mimcjs.multiHash([1, 2], 0, 3);
+
+        assert.equal(o1.toString(), out2[0].toString());
+        assert.equal(o2.toString(), out2[1].toString());
+        assert.equal(o3.toString(), out2[2].toString());
+
+        assert(circuit.checkWitness(w));
+    });
+});

test/mimcspongecontract.js

@@ -0,0 +1,43 @@
+const ganache = require("ganache-cli");
+const Web3 = require("web3");
+const chai = require("chai");
+const mimcGenContract = require("../src/mimcsponge_gencontract.js");
+const mimcjs = require("../src/mimcsponge.js");
+
+
+const assert = chai.assert;
+const log = (msg) => { if (process.env.MOCHA_VERBOSE) console.log(msg); };
+
+const SEED = "mimcsponge";
+
+describe("MiMC Sponge Smart contract test", () => {
+    let testrpc;
+    let web3;
+    let mimc;
+    let accounts;
+
+    before(async () => {
+        web3 = new Web3(ganache.provider(), null, { transactionConfirmationBlocks: 1 });
+        accounts = await web3.eth.getAccounts();
+    });
+
+    it("Should deploy the contract", async () => {
+        const C = new web3.eth.Contract(mimcGenContract.abi);
+
+        mimc = await C.deploy({
+            data: mimcGenContract.createCode(SEED, 220)
+        }).send({
+            gas: 3500000,
+            from: accounts[0]
+        });
+    });
+
+    it("Shold calculate the mimc correctly", async () => {
+        const res = await mimc.methods.MiMCSponge(1,2).call();
+        const res2 = await mimcjs.hash(1,2, 0);
+
+        assert.equal(res.xL.toString(), res2.xL.toString());
+        assert.equal(res.xR.toString(), res2.xR.toString());
+    });
+});
+