Use self-hosted snarkjs dependency

(cherry picked from commit afb4eff954)

.npmrc

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

README.md

@@ -4,6 +4,7 @@
 
 - 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). 
+- You can read more about the circom language in [the circom documentation webpage](https://docs.circom.io/).
 
 ## Organisation
 
@@ -14,4 +15,4 @@ This respository contains 5 folders:
 - `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.
+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 bigInt = require("snarkjs").bigInt;
+const bn128 = require("@tornado/snarkjs").bn128;
+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(
-        F.sub(F.one, y2),
-        F.sub(a, F.mul(d, y2))));
+    let x = F.sqrt(F.div(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;
-        p = getPoint(S+"_"+sidx);
+        while (sidx.length < 16) sidx = "0" + 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("5299619240641551281634865583518297030282874472190772894086521144482721001553"),
-    bigInt("16950150798460657717958625567821834550301663161624707787222815936182638968203")];
+    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++) {
-    let S = "" +i;
-    while (S.length<16) S = "0"+S;
-    const P = generatePoint("Iden3_PedersenGenerator_"+S);
+for (let i = 0; i < 25; i++) {
+    let S = "" + i;
+    while (S.length < 16) S = "0" + S;
+    const P = generatePoint("Iden3_PedersenGenerator_" + S);
     console.log(`[${P[0].toString()}, ${P[1].toString()}]`);
 }
-
-
-

circuits/README.md

@@ -49,7 +49,7 @@ Folder containing the circuit implementation of Sparse Merkle Trees.
     - 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?)
@@ -58,22 +58,22 @@ Arithmetic on [Baby Jubjub elliptic curve](https://github.com/barryWhiteHat/baby
 - `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`) 
+        (`xout`, `yout`) =  (`x1`,`y1`) + (`x2`,`y2`)
              = ((`x1y2`+`y1x2`)/(1+`dx1x2y1y2`)),(`y1y2`-`ax1x2`)/(1-`dx1x2y1y2`))
-    
+
     - SCHEMA
        ```
                                         var a     var d
                                           |         |
                                           |         |
-                                    ______v_________v_______     
+                                    ______v_________v_______
                    input x1 ---->  |                        |
                    input y1 ---->  |        BabyAdd()       | ----> output xout
                    input x2 ---->  |                        | ----> output yout
-                   input y2 ---->  |________________________|     
+                   input y2 ---->  |________________________|
        ```
 
     - INPUTS
@@ -84,16 +84,16 @@ Arithmetic on [Baby Jubjub elliptic curve](https://github.com/barryWhiteHat/baby
       | `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
@@ -108,7 +108,7 @@ Arithmetic on [Baby Jubjub elliptic curve](https://github.com/barryWhiteHat/baby
 
 - `BabyCheck()`
 
-    - DESCRIPTION : checks if a given point is in the curve. 
+    - DESCRIPTION : checks if a given point is in the curve.
     - SCHEMA
     - INPUT
     - OUTPUT
@@ -127,7 +127,7 @@ Arithmetic on [Baby Jubjub elliptic curve](https://github.com/barryWhiteHat/baby
 
 ### binsub
 
-- `BinSub(n)`    
+- `BinSub(n)`
 
     - DESCRIPTION: binary substraction.
     - SCHEMA
@@ -140,7 +140,7 @@ Arithmetic on [Baby Jubjub elliptic curve](https://github.com/barryWhiteHat/baby
 
 - `nbits(a)`
 
-    - DESCRIPTION : binary sum. 
+    - DESCRIPTION : binary sum.
     - SCHEMA
     - INPUT
     - OUTPUT
@@ -149,7 +149,7 @@ Arithmetic on [Baby Jubjub elliptic curve](https://github.com/barryWhiteHat/baby
 
 - `BinSum(n, ops)`
 
-    - DESCRIPTION 
+    - DESCRIPTION
     - SCHEMA
     - INPUT
     - OUTPUT
@@ -169,7 +169,7 @@ Arithmetic on [Baby Jubjub elliptic curve](https://github.com/barryWhiteHat/baby
 
 - `Num2Bits_strict()`
 
-    - DESCRIPTION 
+    - DESCRIPTION
     - SCHEMA
     - INPUT
     - OUTPUT
@@ -259,7 +259,7 @@ Arithmetic on [Baby Jubjub elliptic curve](https://github.com/barryWhiteHat/baby
     - BENCHMARKS
     - EXAMPLE
 
-### compconstant 
+### compconstant
 
 - `CompConstant(ct)`
 
@@ -688,7 +688,7 @@ Implementation of MiMC-7 hash in Fp being...  (link to description of the hash)
 
 ### pedersen_old
 
-Old version of the Pedersen hash (do not use any 
+Old version of the Pedersen hash (do not use any
 more?).
 
 ### pedersen
@@ -720,7 +720,7 @@ more?).
     - BENCHMARKS
     - EXAMPLE
 
-### pointbits  
+### pointbits
 
 - `sqrt(n)`
 
@@ -780,7 +780,7 @@ Implementation of Poseidon hash function (LINK)
     - BENCHMARKS
     - EXAMPLE
 
-- `Ark(t, C)`
+- `Ark(t, C, r)`
 
     - DESCRIPTION
     - SCHEMA
@@ -798,7 +798,7 @@ Implementation of Poseidon hash function (LINK)
     - BENCHMARKS
     - EXAMPLE
 
-- `Poseidon(nInputs, t, nRoundsF, nRoundsP)`
+- `Poseidon(nInputs)`
 
     - DESCRIPTION
     - SCHEMA

circuits/comparators.circom

@@ -86,10 +86,11 @@ template LessThan(n) {
 */
 
 template LessThan(n) {
+    assert(n <= 252);
     signal input in[2];
     signal output out;
 
-    component n2b = Num2Bits(n*2+1);
+    component n2b = Num2Bits(n+1);
 
     n2b.in <== in[0]+ (1<<n) - in[1];
 

circuits/eddsaposeidon.circom

@@ -51,7 +51,7 @@ template EdDSAPoseidonVerifier() {
 
 // Calculate the h = H(R,A, msg)
 
-    component hash = Poseidon(5, 6, 8, 57);
+    component hash = Poseidon(5);
 
     hash.inputs[0] <== R8x;
     hash.inputs[1] <== R8y;

circuits/poseidon.circom

@@ -1,3 +1,4 @@
+include "./poseidon_constants.circom";
 
 template Sigma() {
     signal input in;
@@ -12,169 +13,52 @@ template Sigma() {
     out <== in4*in;
 }
 
-template Ark(t, C) {
+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;
+        out[i] <== in[i] + C[i + r];
     }
 }
 
 template Mix(t, M) {
     signal input in[t];
     signal output out[t];
+
     var lc;
-
-    var i;
-    var j;
-
-    for (i=0; i<t; i++) {
+    for (var i=0; i<t; i++) {
         lc = 0;
-        for (j=0; j<t; j++) {
-            lc = lc + M[i][j]*in[j];
+        for (var j=0; j<t; j++) {
+            lc += M[j][i]*in[j];
         }
         out[i] <== lc;
     }
 }
 
-//    var nRoundsF = 8;
-//    var nRoundsP = 57;
-//    var t = 6;
-
-template Poseidon(nInputs, t, nRoundsF, nRoundsP) {
-
-    var C[65] = [
-        14397397413755236225575615486459253198602422701513067526754101844196324375522,
-        10405129301473404666785234951972711717481302463898292859783056520670200613128,
-        5179144822360023508491245509308555580251733042407187134628755730783052214509,
-        9132640374240188374542843306219594180154739721841249568925550236430986592615,
-        20360807315276763881209958738450444293273549928693737723235350358403012458514,
-        17933600965499023212689924809448543050840131883187652471064418452962948061619,
-        3636213416533737411392076250708419981662897009810345015164671602334517041153,
-        2008540005368330234524962342006691994500273283000229509835662097352946198608,
-        16018407964853379535338740313053768402596521780991140819786560130595652651567,
-        20653139667070586705378398435856186172195806027708437373983929336015162186471,
-        17887713874711369695406927657694993484804203950786446055999405564652412116765,
-        4852706232225925756777361208698488277369799648067343227630786518486608711772,
-        8969172011633935669771678412400911310465619639756845342775631896478908389850,
-        20570199545627577691240476121888846460936245025392381957866134167601058684375,
-        16442329894745639881165035015179028112772410105963688121820543219662832524136,
-        20060625627350485876280451423010593928172611031611836167979515653463693899374,
-        16637282689940520290130302519163090147511023430395200895953984829546679599107,
-        15599196921909732993082127725908821049411366914683565306060493533569088698214,
-        16894591341213863947423904025624185991098788054337051624251730868231322135455,
-        1197934381747032348421303489683932612752526046745577259575778515005162320212,
-        6172482022646932735745595886795230725225293469762393889050804649558459236626,
-        21004037394166516054140386756510609698837211370585899203851827276330669555417,
-        15262034989144652068456967541137853724140836132717012646544737680069032573006,
-        15017690682054366744270630371095785995296470601172793770224691982518041139766,
-        15159744167842240513848638419303545693472533086570469712794583342699782519832,
-        11178069035565459212220861899558526502477231302924961773582350246646450941231,
-        21154888769130549957415912997229564077486639529994598560737238811887296922114,
-        20162517328110570500010831422938033120419484532231241180224283481905744633719,
-        2777362604871784250419758188173029886707024739806641263170345377816177052018,
-        15732290486829619144634131656503993123618032247178179298922551820261215487562,
-        6024433414579583476444635447152826813568595303270846875177844482142230009826,
-        17677827682004946431939402157761289497221048154630238117709539216286149983245,
-        10716307389353583413755237303156291454109852751296156900963208377067748518748,
-        14925386988604173087143546225719076187055229908444910452781922028996524347508,
-        8940878636401797005293482068100797531020505636124892198091491586778667442523,
-        18911747154199663060505302806894425160044925686870165583944475880789706164410,
-        8821532432394939099312235292271438180996556457308429936910969094255825456935,
-        20632576502437623790366878538516326728436616723089049415538037018093616927643,
-        71447649211767888770311304010816315780740050029903404046389165015534756512,
-        2781996465394730190470582631099299305677291329609718650018200531245670229393,
-        12441376330954323535872906380510501637773629931719508864016287320488688345525,
-        2558302139544901035700544058046419714227464650146159803703499681139469546006,
-        10087036781939179132584550273563255199577525914374285705149349445480649057058,
-        4267692623754666261749551533667592242661271409704769363166965280715887854739,
-        4945579503584457514844595640661884835097077318604083061152997449742124905548,
-        17742335354489274412669987990603079185096280484072783973732137326144230832311,
-        6266270088302506215402996795500854910256503071464802875821837403486057988208,
-        2716062168542520412498610856550519519760063668165561277991771577403400784706,
-        19118392018538203167410421493487769944462015419023083813301166096764262134232,
-        9386595745626044000666050847309903206827901310677406022353307960932745699524,
-        9121640807890366356465620448383131419933298563527245687958865317869840082266,
-        3078975275808111706229899605611544294904276390490742680006005661017864583210,
-        7157404299437167354719786626667769956233708887934477609633504801472827442743,
-        14056248655941725362944552761799461694550787028230120190862133165195793034373,
-        14124396743304355958915937804966111851843703158171757752158388556919187839849,
-        11851254356749068692552943732920045260402277343008629727465773766468466181076,
-        9799099446406796696742256539758943483211846559715874347178722060519817626047,
-        10156146186214948683880719664738535455146137901666656566575307300522957959544,
-        19908645952733301583346063785055921934459499091029406575311417879963332475861,
-        11766105336238068471342414351862472329437473380853789942065610694000443387471,
-        11002137593249972174092192767251572171769044073555430468487809799220351297047,
-        284136377911685911941431040940403846843630064858778505937392780738953624163,
-        19448733709802908339787967270452055364068697565906862913410983275341804035680,
-        14423660424692802524250720264041003098290275890428483723270346403986712981505,
-        10635360132728137321700090133109897687122647659471659996419791842933639708516
-    ];
-
-    var M[6][6] = [
-        [
-            19167410339349846567561662441069598364702008768579734801591448511131028229281,
-            14183033936038168803360723133013092560869148726790180682363054735190196956789,
-            9067734253445064890734144122526450279189023719890032859456830213166173619761,
-            16378664841697311562845443097199265623838619398287411428110917414833007677155,
-            12968540216479938138647596899147650021419273189336843725176422194136033835172,
-            3636162562566338420490575570584278737093584021456168183289112789616069756675
-        ],[
-            17034139127218860091985397764514160131253018178110701196935786874261236172431,
-            2799255644797227968811798608332314218966179365168250111693473252876996230317,
-            2482058150180648511543788012634934806465808146786082148795902594096349483974,
-            16563522740626180338295201738437974404892092704059676533096069531044355099628,
-            10468644849657689537028565510142839489302836569811003546969773105463051947124,
-            3328913364598498171733622353010907641674136720305714432354138807013088636408
-        ],[
-            18985203040268814769637347880759846911264240088034262814847924884273017355969,
-            8652975463545710606098548415650457376967119951977109072274595329619335974180,
-            970943815872417895015626519859542525373809485973005165410533315057253476903,
-            19406667490568134101658669326517700199745817783746545889094238643063688871948,
-            17049854690034965250221386317058877242629221002521630573756355118745574274967,
-            4964394613021008685803675656098849539153699842663541444414978877928878266244
-        ],[
-            19025623051770008118343718096455821045904242602531062247152770448380880817517,
-            9077319817220936628089890431129759976815127354480867310384708941479362824016,
-            4770370314098695913091200576539533727214143013236894216582648993741910829490,
-            4298564056297802123194408918029088169104276109138370115401819933600955259473,
-            6905514380186323693285869145872115273350947784558995755916362330070690839131,
-            4783343257810358393326889022942241108539824540285247795235499223017138301952
-        ],[
-            16205238342129310687768799056463408647672389183328001070715567975181364448609,
-            8303849270045876854140023508764676765932043944545416856530551331270859502246,
-            20218246699596954048529384569730026273241102596326201163062133863539137060414,
-            1712845821388089905746651754894206522004527237615042226559791118162382909269,
-            13001155522144542028910638547179410124467185319212645031214919884423841839406,
-            16037892369576300958623292723740289861626299352695838577330319504984091062115
-        ],[
-            15162889384227198851506890526431746552868519326873025085114621698588781611738,
-            13272957914179340594010910867091459756043436017766464331915862093201960540910,
-            9416416589114508529880440146952102328470363729880726115521103179442988482948,
-            8035240799672199706102747147502951589635001418759394863664434079699838251138,
-            21642389080762222565487157652540372010968704000567605990102641816691459811717,
-            20261355950827657195644012399234591122288573679402601053407151083849785332516
-        ]
-    ];
-
-
+template Poseidon(nInputs) {
     signal input inputs[nInputs];
     signal output out;
 
-    component ark[nRoundsF + nRoundsP];
-    component sigmaF[nRoundsF][t];
-    component sigmaP[nRoundsP];
-    component mix[nRoundsF + nRoundsP];
+    // 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 i;
-    var j;
     var k;
 
-    for (i=0; i<(nRoundsF + nRoundsP); i++) {
-        ark[i] = Ark(t, C[i]);
-        mix[i] = Mix(t, M);
-
-        for (j=0; j<t; j++) {
+    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];
@@ -186,23 +70,28 @@ template Poseidon(nInputs, t, nRoundsF, nRoundsP) {
             }
         }
 
-        if ((i<(nRoundsF/2)) || (i>= (nRoundsP + nRoundsF/2))) {
-            k= i<nRoundsF/2 ? i : (i-nRoundsP);
-            for (j=0; j<t; 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;
+            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 (j=1; j<t; j++) {
+            for (var j=1; j<t; j++) {
                 mix[i].in[j] <== ark[i].out[j];
             }
         }
     }
 
-    out <== mix[nRoundsF + nRoundsP -1].out[0];
+    // 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/sha256compression.circom

@@ -22,6 +22,8 @@ include "t1.circom";
 include "t2.circom";
 include "../binsum.circom";
 include "sigmaplus.circom";
+include "sha256compression_function.circom";
+
 
 template Sha256compression() {
     signal input hin[256];
@@ -37,7 +39,11 @@ template Sha256compression() {
     signal h[65][32];
     signal w[64][32];
 
+
+    var outCalc[256] = sha256compression(hin, inp);
+
     var i;
+    for (i=0; i<256; i++) out[i] <-- outCalc[i];
 
     component sigmaPlus[48];
     for (i=0; i<48; i++) sigmaPlus[i] = SigmaPlus();
@@ -147,13 +153,13 @@ template Sha256compression() {
     }
 
     for (k=0; k<32; k++) {
-        out[31-k]     <== fsum[0].out[k];
-        out[32+31-k]  <== fsum[1].out[k];
-        out[64+31-k]  <== fsum[2].out[k];
-        out[96+31-k]  <== fsum[3].out[k];
-        out[128+31-k] <== fsum[4].out[k];
-        out[160+31-k] <== fsum[5].out[k];
-        out[192+31-k] <== fsum[6].out[k];
-        out[224+31-k] <== fsum[7].out[k];
+        out[31-k]     === fsum[0].out[k];
+        out[32+31-k]  === fsum[1].out[k];
+        out[64+31-k]  === fsum[2].out[k];
+        out[96+31-k]  === fsum[3].out[k];
+        out[128+31-k] === fsum[4].out[k];
+        out[160+31-k] === fsum[5].out[k];
+        out[192+31-k] === fsum[6].out[k];
+        out[224+31-k] === fsum[7].out[k];
     }
 }

circuits/sha256/sha256compression_function.circom

@@ -0,0 +1,112 @@
+//    signal input hin[256];
+//    signal input inp[512];
+//    signal output out[256];
+
+
+function rrot(x, n) {
+    return ((x >> n) | (x << (32-n))) & 0xFFFFFFFF;
+}
+
+function bsigma0(x) {
+    return rrot(x,2) ^ rrot(x,13) ^ rrot(x,22);
+}
+
+function bsigma1(x) {
+    return rrot(x,6) ^ rrot(x,11) ^ rrot(x,25);
+}
+
+function ssigma0(x) {
+    return rrot(x,7) ^ rrot(x,18) ^ (x >> 3);
+}
+
+function ssigma1(x) {
+    return rrot(x,17) ^ rrot(x,19) ^ (x >> 10);
+}
+
+function Maj(x, y, z) {
+    return (x&y) ^ (x&z) ^ (y&z);
+}
+
+function Ch(x, y, z) {
+    return (x & y) ^ ((0xFFFFFFFF ^x) & z);
+}
+
+function sha256K(i) {
+    var k[64] = [
+        0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
+        0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
+        0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
+        0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
+        0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
+        0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
+        0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
+        0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
+    ];
+    return k[i];
+}
+
+function sha256compression(hin, inp) {
+    var H[8];
+    var a;
+    var b;
+    var c;
+    var d;
+    var e;
+    var f;
+    var g;
+    var h;
+    var out[256];
+    for (var i=0; i<8; i++) {
+        H[i] = 0;
+        for (var j=0; j<32; j++) {
+            H[i] += hin[i*32+j] << j;
+        }
+    }
+    a=H[0];
+    b=H[1];
+    c=H[2];
+    d=H[3];
+    e=H[4];
+    f=H[5];
+    g=H[6];
+    h=H[7];
+    var w[64];
+    var T1;
+    var T2;
+    for (var i=0; i<64; i++) {
+        if (i<16) {
+            w[i]=0;
+            for (var j=0; j<32; j++) {
+                w[i] +=  inp[i*32+31-j]<<j;
+            }
+        } else {
+            w[i] = (ssigma1(w[i-2]) + w[i-7] + ssigma0(w[i-15]) + w[i-16]) & 0xFFFFFFFF;
+        }
+        T1 = (h + bsigma1(e) + Ch(e,f,g) + sha256K(i) + w[i]) & 0xFFFFFFFF;
+        T2 = (bsigma0(a) + Maj(a,b,c)) & 0xFFFFFFFF;
+
+        h=g;
+        g=f;
+        f=e;
+        e=(d+T1) & 0xFFFFFFFF;
+        d=c;
+        c=b;
+        b=a;
+        a=(T1+T2) & 0xFFFFFFFF;
+
+    }
+    H[0] = H[0] + a;
+    H[1] = H[1] + b;
+    H[2] = H[2] + c;
+    H[3] = H[3] + d;
+    H[4] = H[4] + e;
+    H[5] = H[5] + f;
+    H[6] = H[6] + g;
+    H[7] = H[7] + h;
+    for (var i=0; i<8; i++) {
+        for (var j=0; j<32; j++) {
+            out[i*32+31-j] = (H[i] >> j) & 1;
+        }
+    }
+    return out;
+}

circuits/smt/smthash_poseidon.circom

@@ -29,7 +29,7 @@ template SMTHash1() {
     signal input value;
     signal output out;
 
-    component h = Poseidon(3, 6, 8, 57);   // Constant
+    component h = Poseidon(3);   // Constant
     h.inputs[0] <== key;
     h.inputs[1] <== value;
     h.inputs[2] <== 1;
@@ -48,7 +48,7 @@ template SMTHash2() {
     signal input R;
     signal output out;
 
-    component h = Poseidon(2, 6, 8, 57);   // Constant
+    component h = Poseidon(2);   // Constant
     h.inputs[0] <== L;
     h.inputs[1] <== R;
 

package.json

@@ -1,38 +1,39 @@
 {
-  "name": "circomlib",
-  "version": "0.2.2",
-  "description": "Basic circuits library for Circom",
-  "main": "index.js",
-  "directories": {
-    "test": "test"
-  },
-  "scripts": {
-    "test": "mocha --max-old-space-size=4000"
-  },
-  "keywords": [
-    "pedersen",
-    "hash",
-    "ethereum",
-    "circuit",
-    "circom",
-    "zksnark"
-  ],
-  "repository": {
-    "type": "git",
-    "url": "https://github.com/iden3/circomlib.git"
-  },
-  "author": "0Kims",
-  "license": "GPL-3.0",
-  "dependencies": {
-    "blake-hash": "^1.1.0",
-    "blake2b": "^2.1.3",
-    "circom": "0.5.9",
-    "ffjavascript": "0.1.0",
-    "web3": "^1.2.6"
-  },
-  "devDependencies": {
-    "eslint": "^6.8.0",
-    "ganache-cli": "^6.9.1",
-    "mocha": "^7.1.1"
-  }
+    "name": "@tornado/circomlib",
+    "version": "0.4.1",
+    "description": "Basic circuits library for Circom",
+    "main": "index.js",
+    "directories": {
+        "test": "test"
+    },
+    "scripts": {
+        "test": "mocha --max-old-space-size=4000"
+    },
+    "keywords": [
+        "pedersen",
+        "hash",
+        "ethereum",
+        "circuit",
+        "circom",
+        "zksnark"
+    ],
+    "repository": {
+        "type": "git",
+        "url": "https://git.tornado.ws/tornado-packages/circomlib.git"
+    },
+    "author": "0Kims",
+    "license": "GPL-3.0",
+    "dependencies": {
+        "@tornado/snarkjs": "0.1.20",
+        "blake-hash": "^1.1.0",
+        "blake2b": "^2.1.3",
+        "circom": "0.5.33",
+        "ffjavascript": "0.1.0"
+    },
+    "devDependencies": {
+        "eslint": "^6.8.0",
+        "ganache-cli": "^6.12.1",
+        "mocha": "^7.1.1",
+        "web3": "^1.3.0"
+    }
 }

src/eddsa.js

@@ -112,8 +112,7 @@ function signPoseidon(prv, msg) {
     const Fr = new F1Field(babyJub.subOrder);
     r = Fr.e(r);
     const R8 = babyJub.mulPointEscalar(babyJub.Base8, r);
-    const hash = poseidon.createHash(6, 8, 57);
-    const hm = hash([R8[0], R8[1], A[0], A[1], msg]);
+    const hm = poseidon([R8[0], R8[1], A[0], A[1], msg]);
     const S = Fr.add(r , Fr.mul(hm, s));
     return {
         R8: R8,
@@ -180,8 +179,7 @@ function verifyPoseidon(msg, sig, A) {
     if (!babyJub.inCurve(A)) return false;
     if (sig.S>= babyJub.subOrder) return false;
 
-    const hash = poseidon.createHash(6, 8, 57);
-    const hm = hash([sig.R8[0], sig.R8[1], A[0], A[1], msg]);
+    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, Scalar.mul(hm, 8));

src/evmasm.js

@@ -154,6 +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

@@ -3,23 +3,21 @@
 //
 
 const Contract = require("./evmasm");
-const G2 = require("snarkjs").bn128.G2;
-
+const G2 = require("@tornado/snarkjs").bn128.G2;
 
 function toHex256(a) {
     let S = a.toString(16);
-    while (S.length < 64) S="0"+S;
+    while (S.length < 64) S = "0" + S;
     return "0x" + S;
 }
 
 function createCode(P, w) {
-
     const C = new Contract();
 
-    const NPOINTS = 1 << (w-1);
+    const NPOINTS = 1 << (w - 1);
 
     const VAR_POS = C.allocMem(32);
-    const VAR_POINTS = C.allocMem( (NPOINTS)*4*32);
+    const VAR_POINTS = C.allocMem(NPOINTS * 4 * 32);
     const savedP = C.allocMem(32);
     const savedZ3 = C.allocMem(32);
 
@@ -37,7 +35,7 @@ function createCode(P, w) {
 
     storeVals();
 
-    C.push( Math.floor(255/w)*w  );                // pos := 255
+    C.push(Math.floor(255 / w) * w); // pos := 255
     C.push(VAR_POS);
     C.mstore();
 
@@ -49,38 +47,38 @@ function createCode(P, w) {
     C.push(0);
     C.push(0);
 
-    C.label("begin_loop");      // ACC_X ACC_Y ACC_Z q
+    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.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.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.push(NPOINTS - 1);
+    C.and(); // g ACC_X ACC_Y ACC_Z q
 
-    C.internalCall("add");      // acc_x acc_y acc_z
+    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.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.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.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.internalCall("affine"); // acc_x acc_y
 
     C.push(0);
     C.mstore();
@@ -95,17 +93,16 @@ function createCode(P, w) {
     C.push("0x00");
     C.return();
 
-
     double();
     addPoint();
     affine();
 
     return C.createTxData();
 
-    function add(a,b,q) {
+    function add(a, b, q) {
         C.dup(q);
-        C.dup(a+1 + 1);
-        C.dup(b+1 + 2);
+        C.dup(a + 1 + 1);
+        C.dup(b + 1 + 2);
         C.addmod();
         C.dup(q + 1);
         C.dup(a + 2);
@@ -113,73 +110,73 @@ function createCode(P, w) {
         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 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
+        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
+        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.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();
     }
 
@@ -187,220 +184,212 @@ function createCode(P, w) {
         C.dup(a);
         C.dup(b);
         C.eq();
-        C.dup(a+1);
-        C.dup(a+1);
+        C.dup(a + 1);
+        C.dup(a + 1);
         C.and();
     }
 
     function rm(a) {
-        if (a>0) C.swap(a);
+        if (a > 0) C.swap(a);
         C.pop();
-        if (a>0) C.swap(a);
+        if (a > 0) C.swap(a);
         C.pop();
     }
 
     function double() {
-        C.label("double");       // xR, xI,    yR, yI,   zR zI, q
+        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
-
+        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
+        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
+        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
+        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
+        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
+        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
+        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
+        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
+        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
+        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
+        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
+        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
+    function addPoint() {
+        // p, xR, xI,    yR, yI,   zR zI, q
 
-
-        C.dup(0);           // p p X2 Y2 Z2 q
+        C.dup(0); // p p X2 Y2 Z2 q
 
         C.push(savedP);
         C.mstore();
 
-        C.iszero();         // X2 Y2 Z2 q
+        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
-
-
+        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
+        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
 
-        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
+        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
+        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
+        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
+        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
+        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
+        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
+        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
+        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
+        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
+        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
+        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
+        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
+        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
+        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
+        C.swap(4); // X3 Y3 Z3 q
 
         // returns the point in memory
         C.label("returnP"); // X Y Z q
@@ -429,37 +418,37 @@ function createCode(P, w) {
 
         function loadX() {
             C.push(savedP);
-            C.mload();                  // p
+            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
+            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.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
+            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 + 32);
+            C.mload(); // p
             C.push(savedZ3);
             C.mload();
         }
@@ -467,18 +456,19 @@ function createCode(P, w) {
         function saveZ3() {
             C.push(savedZ3);
             C.mstore();
-            C.push(savedZ3+32);
+            C.push(savedZ3 + 32);
             C.mstore();
         }
     }
 
-    function affine() { // X Y Z q
+    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
+        C.jumpi("notZero"); // X Y Z q
         rm(0);
         rm(0);
         C.push(0);
@@ -487,96 +477,95 @@ function createCode(P, w) {
         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
+        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.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); // 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.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.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
+        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++) {
+        C.push(VAR_POINTS); // p
+        for (let i = 0; i < NPOINTS; i++) {
             const MP = G2.affine(G2.mulScalar(P, 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
+            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": [
+        constant: true,
+        inputs: [
             {
-                "name": "escalar",
-                "type": "uint256"
-            }
+                name: "escalar",
+                type: "uint256",
+            },
         ],
-        "name": "mulexp",
-        "outputs": [
+        name: "mulexp",
+        outputs: [
             {
-                "name": "",
-                "type": "uint256"
+                name: "",
+                type: "uint256",
             },
             {
-                "name": "",
-                "type": "uint256"
-            }
+                name: "",
+                type: "uint256",
+            },
         ],
-        "payable": false,
-        "stateMutability": "pure",
-        "type": "function"
-    }
+        payable: false,
+        stateMutability: "pure",
+        type: "function",
+    },
 ];
 
 module.exports.createCode = createCode;

src/poseidon.js

@@ -1,121 +1,48 @@
-const Scalar = require("ffjavascript").Scalar;
-const blake2b = require("blake2b");
 const assert = require("assert");
+const Scalar = require("ffjavascript").Scalar;
 const ZqField = require("ffjavascript").ZqField;
-const utils = require("ffjavascript").utils;
+const { unstringifyBigInts } = require("ffjavascript").utils;
 
+// Prime 0x30644e72e131a029b85045b68181585d2833e84879b9709143e1f593f0000001
 const F = new ZqField(Scalar.fromString("21888242871839275222246405745257275088548364400416034343698204186575808495617"));
-exports.F = F;
 
-const SEED = "poseidon";
-const NROUNDSF = 8;
-const NROUNDSP = 57;
-const T = 6;
+// 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"));
 
-function getPseudoRandom(seed, n) {
-    const res = [];
-    let input = Buffer.from(seed);
-    let h = blake2b(32).update(input).digest();
-    while (res.length<n) {
-        const n = F.normalize(utils.leBuff2int(Buffer.from(h)));
-        res.push(n);
-        h = blake2b(32).update(h).digest();
-    }
+// 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;
 
-    return res;
-}
+const pow5 = a => F.mul(a, F.square(F.square(a, a)));
 
-function allDifferent(v) {
-    for (let i=0; i<v.length; i++) {
-        if (F.isZero(v[i])) return false;
-        for (let j=i+1; j<v.length; j++) {
-            if (F.eq(v[i],v[j])) return false;
+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 => F.e(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 true;
+    return F.normalize(state[0]);
 }
 
-exports.getMatrix = (t, seed, nRounds) => {
-    if (typeof seed === "undefined") seed = SEED;
-    if (typeof nRounds === "undefined") nRounds = NROUNDSF + NROUNDSP;
-    if (typeof t === "undefined") t = T;
-    assert(t<=6);  // Force the same matrix for all.
-    t=6;
-    let nonce = "0000";
-    let cmatrix = getPseudoRandom(seed+"_matrix_"+nonce, t*2);
-    while (!allDifferent(cmatrix)) {
-        nonce = (Number(nonce)+1)+"";
-        while(nonce.length<4) nonce = "0"+nonce;
-        cmatrix = getPseudoRandom(seed+"_matrix_"+nonce, t*2);
-    }
-
-    const M = new Array(t);
-    for (let i=0; i<t; i++) {
-        M[i] = new Array(t);
-        for (let j=0; j<t; j++) {
-            M[i][j] = F.normalize(F.inv(F.sub(cmatrix[i], cmatrix[t+j])));
-        }
-    }
-    return M;
-};
-
-exports.getConstants = (t, seed, nRounds) => {
-    if (typeof seed === "undefined") seed = SEED;
-    if (typeof nRounds === "undefined") nRounds = NROUNDSF + NROUNDSP;
-    if (typeof t === "undefined") t = T;
-    const cts = getPseudoRandom(seed+"_constants", nRounds);
-    return cts;
-};
-
-function ark(state, c) {
-    for (let j=0; j<state.length; j++ ) {
-        state[j] = F.add(state[j], c);
-    }
-}
-
-function sigma(a) {
-    return F.mul(a, F.square(F.square(a,a)));
-}
-
-function mix(state, M) {
-    const newState = new Array(state.length);
-    for (let i=0; i<state.length; i++) {
-        newState[i] = F.zero;
-        for (let j=0; j<state.length; j++) {
-            newState[i] = F.add(newState[i], F.mul(M[i][j], state[j]) );
-        }
-    }
-    for (let i=0; i<state.length; i++) state[i] = newState[i];
-}
-
-exports.createHash = (t, nRoundsF, nRoundsP, seed) => {
-
-    if (typeof seed === "undefined") seed = SEED;
-    if (typeof nRoundsF === "undefined") nRoundsF = NROUNDSF;
-    if (typeof nRoundsP === "undefined") nRoundsP = NROUNDSP;
-    if (typeof t === "undefined") t = T;
-
-    assert(nRoundsF % 2 == 0);
-    const C = exports.getConstants(t, seed, nRoundsF + nRoundsP);
-    const M = exports.getMatrix(t, seed, nRoundsF + nRoundsP);
-    return function(inputs) {
-        let state = [];
-        assert(inputs.length <= t);
-        assert(inputs.length > 0);
-        for (let i=0; i<inputs.length; i++) state[i] = F.e(inputs[i]);
-        for (let i=inputs.length; i<t; i++) state[i] = F.zero;
-
-        for (let i=0; i< nRoundsF + nRoundsP; i++) {
-            ark(state, C[i]);
-            if ((i<nRoundsF/2) || (i >= nRoundsF/2 + nRoundsP)) {
-                for (let j=0; j<t; j++) state[j] = sigma(state[j]);
-            } else {
-                state[0] = sigma(state[0]);
-            }
-            mix(state, M);
-        }
-        return F.normalize(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",
+      "0x09166d1877b85ed30781d55bd800917958abc8eb14be7acdf7c74dca69b9f293",
+      "0x054974baac27bad68c2928ad06d711cb424e77509102145b9e5a1b911dc2342c",
+      "0x08759d0b984c16c5ba432900cf2bd92c4919cdd7e99a10c29cd343f69b460f74",
+      "0x2a65153ca0dbc6487497126a6ec8a8d014bcb3d1818914865a504404a4ad03a0",
+      "0x2b1c5d81263028bcf7996584eede3c315789d1f3e205919585145e023cefd30e",
+      "0x1927d650073030417589aa9047f9b62ee876cca63cde015e24d0bf4894b2978f",
+      "0x2d76a732e12f3deafda7b22085efef22772cd3de8f7e001bc99088cb81c9b734",
+      "0x04063f088d29d7e91e72cdbc50afe1835c4b11ed14f769522c86760cbf526d50",
+      "0x03e3a3a1c937f3c05882148070e9dac6b5915751fbca27c212bf7582441819eb",
+      "0x0d416931f39d66d2c94f070c54cae280da1c12605fd2256a129696e98f11ccf6",
+      "0x2bc7ec8d56eaf3c8e0d7695f84cbf898f0155c3ebaf24583af09b0e7154bec1a",
+      "0x0367eff17e1bddbee7eed78ec874a9a01e6a9a38406108f487662dc60614010b",
+      "0x08dd17e110dc0768f10866e8ccf53efb5290468cd8afd07430def10ec9a586fd",
+      "0x218efb40100662ed34129a8246a90398a806f52f5f76e104299092860a7a8888",
+      "0x1ac99c81cc6f26be5143ea1daccd4eacaa31e3b223f0a6c4dec96633410f197d",
+      "0x12cd3c8d2ac7f084684109522fb7be0b7531e2acf8d9e7b686e177ea7a0f05d6",
+      "0x17e4773a46b9bb17843f36f6db850bace2c86aa3376abf06614f62bded94a7b1",
+      "0x29d767ca1255c6c1b1bce1d68ecfbd596aa77657dfbe4a604235e60449a9ff14",
+      "0x242b7392dec412813184d8dca1a25147c092f3d7dfd3c0c58174eb4268452cb8",
+      "0x0ea9a0a62f1db4cf40e5e2db0286e48312eee96e72305cf4f98c5f7d6c2df9e5",
+      "0x13b3fe8f9d94f4d1bcbbaa26018c2c54fcaf122015c5cb9bfbe7a6694ca718bc",
+      "0x2208e0ced2039b4140bd1fdc4cdff8568f92ea662ab6588a16c42fd95adc8f39",
+      "0x1e8616716cf3255c36bdb7b62fe0f9b41c3877aa2df998ab54e8974e017a3537",
+      "0x038c19e5b3c8c3a6e812190a39e6313b181dc71e065ada3b823547451b8288eb",
+      "0x2518ab4d82a14c358e67509c46fd78ef736049c9498592e9390fce0e8b42a314",
+      "0x2c2b623bc30fbc269b3ef27e6a7fd25c2968a321382218ab2548e18ff6ea4b3c",
+      "0x25fa075323cdc87b1db37b7d42fccf1fd9a7ad6a598085e68e57dd145032c15c",
+      "0x2f5f009c35bb13a3027067b3bf5881d8c533b67fcb390d162fc406c989575905",
+      "0x0b8e0cd5cab0e99ca405d6bd1597a9dee6cd3c0dd4e0f6929a1d4d88b42605a3",
+      "0x104069c2b60c8e4b01890e6992cc841e269636e3c5ab6905a8f4045711c19665",
+      "0x25d04aa8cab6c80cce8005e027f4bc3b82e91fe2f1ca6e2b652defed5b0af05c",
+      "0x2cc7d8d1f3deb41e50665cb11ad9e821464a382dd17d2e71fe9d1c52c167427d",
+      "0x1b176ebf76e8d0d4dd54afe65596621b9af71273e5006cc60cad9819e2a0b87c",
+      "0x128db0ff4dade1354d6ad7567e59b4aee9341ecf906f2988aaa53f6eff912aa1",
+      "0x19b85e448cd2bd1cd640922cc2c7ba93441f0bafdb8a38818a5d5a666c0eb921",
+      "0x0498634a814e0850c5063b301461fff914fb9debe1aa76673bc0dd089e8898a9",
+      "0x1e0081d167ae36dc04c5359042be8c26af96b4ecd92c398d36a12aa863f23bcc",
+      "0x26f2231aee75807dbbd2a46279b38e94514b1945517909b93e482feceaab0ac7",
+      "0x2b81566447dccb12959315088de6e42cabf4a0798110a8c2339e0c6fa35952f7",
+      "0x106920fdae1cfe63ce0199599d45c4343ae36a016cab57dee1a1bda89788a1d5",
+      "0x2d1b3979803f4f5ad56b9cfcb41d62c4a30b5f01251dbc845fc0004ffdf9aaee",
+      "0x0492886098bc8d5601930dd4bc7fabaded741f1acb5e6dceb523a7dfa70958eb",
+      "0x1b2f4d14a2c0d5908c6176e46d241af50de7927f0bc02d12ca61f4590c040823",
+      "0x1e792cdeb85952cdeddfc38534e2321f4a566798aa7b7caa7c655404f4aeec44",
+      "0x29d050fabbb2ec05984df81ed8be2838f94b6cf3819a68a42ffbb66dd4c90641",
+      "0x222805d8ae12b43cbe30e5be4dba67ff2353b06f4bde6af8a3e7f8860016a047",
+      "0x20eb248ee0196d8b59886a343afd2fa88960f208ebec71901da094128cbc4725",
+      "0x22058b95c5f9776d8d3dd8d0c7a922602606ac72d7ac0c3ce353ee0c798c54a1",
+      "0x22afd288266fa099adeaf954fe2a94b0c05445272ac8b50655677be97b130bee",
+      "0x25c343fe28997a29309a518d42c63b72c281bc44fcd4bc76d2cb1ad34a3fb59f",
+      "0x26c9e1c8f49e22d6ac88c7a362513a449e682ab324b5e792eced3c0cf5a41f4a",
+      "0x2b666c9f3ed397d5bb857215fce16a5de70d844ec6ad0b8e53a70287ee939668",
+      "0x0193818f6648e494b44941453f1163478525f5cbec6b7fbf7fbcd2f5f370052f",
+      "0x287663a600dd765c1439d38bb92544aeddcd9959c96868df261f70021f4643e1",
+      "0x044046628ffff9fb29c8c7d497ea02f9941fb149960b5f2ea48c800bcce85ac3",
+      "0x26677946fb04e67bf0603bccf418736f976fe326f2351e351a623a49f015950c",
+      "0x2a79f2df436cc4bf39b2ab08d989ea590d2d1fb85caac9bd8a526dd965b0ab6d",
+      "0x2177c32e659c0d78c6766c5633e9716e6a3e09b0f16e139985044f6d2d231bfd",
+      "0x2181f1fbf114eb1033d4727aa2b879e28d034d8197e460798b2d8be106695c25",
+      "0x1582e0e3ea89e6c7912c2b2ffd9b6de7f960a6a7ee9c27d2ec9d53aaed390656",
+      "0x2899f6acd826f205c140ac2599496b3a3448dd62e25b076be959cc24b12aa69a"
+    ],
+    [
+      "0x211fa1419f2b7b630c9d42ac4dfff1d8201547e24651d10dd4b4988ac06216f6",
+      "0x18ac51e16e5865ee074806af313b040924f20a76c2a45a76b90aeb07ac438e03",
+      "0x2906c33d1c67bd9a2ba6ab37ef7aecf377eb3f324ce68be741441faa846133b6",
+      "0x0d6fdc1a5ff92bedc6919093d495de525266075a273eadea7287b1b4941cf427",
+      "0x2552b734c5a95e374c8286a1cf7c05975265132ec03487470a513366fb38c5fd",
+      "0x1a8e88f6d94394599224dba0906142559b388ba2cc168fe97b6af4a85aec2680",
+      "0x2573ce0ce1273b649d31dd96f1f03f2ec83cf4920b72db75e428707dc1e26db3",
+      "0x0ce0750d2b6bf2a1251c0c6b496f01f7217a58c4ae1e5bf17a1f884f9c430642",
+      "0x154735e5f8c0640c2c722fb3dac05c4d603c3e150dd2cd09475d5770159fdeef",
+      "0x1671d015b9090cd861a5a5ccbba2cbd7a51bf07febdefabeff7b69f4b219ff3f",
+      "0x2d2fbd76fcfbc5943b16d77456d974a7741165a49187f28efb5d64a7634a4260",
+      "0x040a119f75e867208bddfaeb55741ebf53a30c7a1affcb8b6cd267c66c054755",
+      "0x11a3eb9fe3312950bf5cafea6c2b97818825db4389b8ae9408f9c7cb4882665a",
+      "0x12c9a214894557df9260fee1fd68af4fe37e63234f4b1950fb6302ef5c7602e2",
+      "0x19fc5d4620dbaeaf5448897edf3bcbfeb3853a9126c7b3c3d5b77ebf5b7fbf21",
+      "0x257c925a34966aae22eb261d58f97b43f255ae75fd0864fc48e492de7e55becc",
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+      ],
+      [
+        "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

@@ -2,53 +2,52 @@
 // License: LGPL-3.0+
 //
 
-const Poseidon = require("./poseidon.js");
-
 const Contract = require("./evmasm");
+const { unstringifyBigInts } = require("ffjavascript").utils;
+const Web3Utils = require("web3-utils");
 
-const SEED = "poseidon";
-const NROUNDSF = 8;
-const NROUNDSP = 57;
-const T = 6;
+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(t, nRoundsF, nRoundsP, seed) {
-    if (typeof seed === "undefined") seed = SEED;
-    if (typeof nRoundsF === "undefined") nRoundsF = NROUNDSF;
-    if (typeof nRoundsP === "undefined") nRoundsP = NROUNDSP;
-    if (typeof t === "undefined") t = T;
+function createCode(nInputs) {
 
-    const K = Poseidon.getConstants(t, seed, nRoundsP + nRoundsF);
-    const M = Poseidon.getMatrix(t, seed, nRoundsP + nRoundsF);
+    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[i][j]));
+                C.push(toHex256(M[t-2][j][i]));
                 C.push((1+i*t+j)*32);
                 C.mstore();
             }
         }
     }
 
-    function ark(r) {
-        C.push(toHex256(K[r])); // K, st, q
+    function ark(r) {   // st, q
         for (let i=0; i<t; i++) {
-            C.dup(1+t); // q, K, st, q
-            C.dup(1);   // K, q, K, st, q
-            C.dup(3+i); // st[i], K, q, K, st, q
-            C.addmod(); // newSt[i], K, st, q
-            C.swap(2 + i); // xx, K, st, q
+            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();
         }
-        C.pop();
     }
 
     function sigma(p) {
@@ -104,8 +103,13 @@ function createCode(t, nRoundsF, nRoundsP, seed) {
     C.push(0);
     C.calldataload();
     C.div();
-    C.push("0xc4420fb4"); // poseidon(uint256[])
+    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();
 
@@ -115,17 +119,16 @@ function createCode(t, nRoundsF, nRoundsP, seed) {
 
     C.push("0x30644e72e131a029b85045b68181585d2833e84879b9709143e1f593f0000001");  // q
 
-    // Load 6 values from the call data.
+    // Load t values from the call data.
     // The function has a single array param param
-    // [Selector (4)] [Pointer (32)][Length (32)] [data1 (32)] ....
-    // We ignore the pointer and the length and just load 6 values to the state
-    // (Stack positions 0-5) If the array is shorter, we just set zeros.
+    // [Selector (4)] [item1 (32)] [item2 (32)] ....
+    // Stack positions 0-nInputs.
     for (let i=0; i<t; i++) {
-        C.push(0x44+(0x20*(t-1-i)));
+        C.push(0x04+(0x20*(nInputs-i)));
         C.calldataload();
     }
 
-    for (let i=0; i<nRoundsF+nRoundsP; i++) {
+    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++) {
@@ -142,6 +145,13 @@ function createCode(t, nRoundsF, nRoundsP, seed) {
         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");
@@ -153,28 +163,54 @@ function createCode(t, nRoundsF, nRoundsP, seed) {
     return C.createTxData();
 }
 
-module.exports.abi = [
-    {
-        "constant": true,
-        "inputs": [
-            {
-                "name": "input",
-                "type": "uint256[]"
-            }
-        ],
-        "name": "poseidon",
-        "outputs": [
-            {
-                "name": "",
-                "type": "uint256"
-            }
-        ],
-        "payable": false,
-        "stateMutability": "pure",
-        "type": "function"
-    }
-];
+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_printconstants.js

@@ -1,16 +0,0 @@
-
-
-const Poseidon = require("./poseidon.js");
-
-const C = Poseidon.getConstants();
-
-let S = "[\n";
-
-for (let i=0; i<C.length; i++) {
-    S = S + "    " + C[i].toString();
-    if (i<C.length-1) S = S + ",";
-    S = S + "\n";
-}
-S=S+ "]\n";
-
-console.log(S);

src/poseidon_printcontract.js

@@ -1,5 +1,13 @@
 const poseidonGenContract = require("./poseidon_gencontract");
 
+if (process.argv.length != 3) {
+    console.log("Usage: node poseidon_gencontract.js [numberOfInputs]");
+    process.exit(1);
+}
 
-console.log(poseidonGenContract.createCode(6, 8, 57));
+const nInputs = Number(process.argv[2]);
+
+console.log(nInputs);
+
+console.log(poseidonGenContract.createCode(nInputs));
 

src/smt.js

@@ -58,10 +58,10 @@ class SMT {
 
         res.newRoot = rtNew;
 
+        await this.db.multiDel(dels);
         await this.db.multiIns(ins);
         await this.db.setRoot(rtNew);
         this.root = rtNew;
-        await this.db.multiDel(dels);
 
         return res;
     }

src/smt_hashes_poseidon.js

@@ -1,13 +1,18 @@
-const Poseidon = require("./poseidon");
 
-const hash = Poseidon.createHash(6, 8, 57);
+const ZqField = require("ffjavascript").ZqField;
+const Scalar = require("ffjavascript").Scalar;
+
+const poseidon = require("./poseidon");
+
+const F = new ZqField(Scalar.fromString("21888242871839275222246405745257275088548364400416034343698204186575808495617"));
+
 
 exports.hash0 = function (left, right) {
-    return hash([left, right]);
+    return poseidon([left, right]);
 };
 
 exports.hash1 = function(key, value) {
-    return hash([key, value, Poseidon.F.one]);
+    return poseidon([key, value, F.one]);
 };
 
-exports.F = Poseidon.F;
+exports.F = F;

src/smt_memdb.js

@@ -1,6 +1,9 @@
 
-const F = require("./poseidon.js").F;
 const Scalar = require("ffjavascript").Scalar;
+const ZqField = require("ffjavascript").ZqField;
+
+// Prime 0x30644e72e131a029b85045b68181585d2833e84879b9709143e1f593f0000001
+const F = new ZqField(Scalar.fromString("21888242871839275222246405745257275088548364400416034343698204186575808495617"));
 
 class SMTMemDb {
     constructor() {
@@ -14,7 +17,7 @@ class SMTMemDb {
 
     _key2str(k) {
         // const keyS = bigInt(key).leInt2Buff(32).toString("hex");
-        const keyS = Scalar.e(k);
+        const keyS = k.toString();
         return keyS;
     }
 

test/circuits/poseidon3_test.circom

@@ -1,3 +1,3 @@
 include "../../circuits/poseidon.circom"
 
-component main = Poseidon(2, 3, 8, 57);
+component main = Poseidon(2);

test/circuits/poseidon6_test.circom

@@ -1,3 +1,3 @@
 include "../../circuits/poseidon.circom"
 
-component main = Poseidon(2, 6, 8, 57);
+component main = Poseidon(5);

test/eddsa_js.js

@@ -67,12 +67,12 @@ describe("EdDSA js test", function () {
         assert.equal(signature.R8[1].toString(),
             "15383486972088797283337779941324724402501462225528836549661220478783371668959");
         assert.equal(signature.S.toString(),
-            "248298168863866362217836334079793350221620631973732197668910946177382043688");
+            "1398758333392199195742243841591064350253744445503462896781493968760929513778");
 
         const pSignature = eddsa.packSignature(signature);
         assert.equal(pSignature.toString("hex"), ""+
             "dfedb4315d3f2eb4de2d3c510d7a987dcab67089c8ace06308827bf5bcbe02a2"+
-            "28506bce274aa1b3f7e7c2fd7e4fe09bff8f9aa37a42def7994e98f322888c00");
+            "32f16b0f2f4c4e1169aa59685637e1429b6581a9531d058d65f4ab224eab1703");
 
         const uSignature = eddsa.unpackSignature(pSignature);
         assert(eddsa.verifyPoseidon(msg, uSignature, pubKey));

test/helpers/printsignal.js

@@ -1,13 +1,12 @@
-
-const snarkjs = require("snarkjs");
+const snarkjs = require("@tornado/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/poseidoncircuit.js

@@ -1,21 +1,11 @@
 const chai = require("chai");
 const path = require("path");
-var blake2b = require("blake2b");
 const tester = require("circom").tester;
 
 const poseidon = require("../src/poseidon.js");
 
 const assert = chai.assert;
 
-describe("Blake2b version test", function() {
-    it("Should give the expected output for blake2b version", async () => {
-        var output = new Uint8Array(32);
-        var input = Buffer.from("poseidon_constants");
-        const h = blake2b(output.length).update(input).digest("hex");
-        assert.equal("e57ba154fb2c47811dc1a2369b27e25a44915b4e4ece4eb8ec74850cb78e01b1", h);
-    });
-});
-
 describe("Poseidon Circuit test", function () {
     let circuit6;
     let circuit3;
@@ -28,24 +18,20 @@ describe("Poseidon Circuit test", function () {
     });
 
     it("Should check constrain of hash([1, 2]) t=6", async () => {
-        const w = await circuit6.calculateWitness({inputs: [1, 2]}, true);
+        const w = await circuit6.calculateWitness({inputs: [1, 2, 0,0,0]}, true);
 
-        const hash = poseidon.createHash(6, 8, 57);
-
-        const res2 = hash([1,2]);
-        assert.equal("12242166908188651009877250812424843524687801523336557272219921456462821518061", res2.toString());
+        const res2 = poseidon([1,2,0,0,0]);
+        assert.equal("3975478831357328722254985704342968745327876719981393787143845259590563829094", res2.toString());
         await circuit6.assertOut(w, {out : res2});
         await circuit6.checkConstraints(w);
     });
 
     it("Should check constrain of hash([3, 4]) t=6", async () => {
-        const w = await circuit6.calculateWitness({inputs: [3, 4]});
+        const w = await circuit6.calculateWitness({inputs: [3, 4,5,10,23]});
 
-        const hash = poseidon.createHash(6, 8, 57);
+        const res2 = poseidon([3, 4,5,10,23]);
 
-        const res2 = hash([3, 4]);
-
-        assert.equal("17185195740979599334254027721507328033796809509313949281114643312710535000993", res2.toString());
+        assert.equal("18540626624821144952552691894137986276337186174352554475896834101336254024067", res2.toString());
         await circuit6.assertOut(w, {out : res2});
         await circuit6.checkConstraints(w);
     });
@@ -54,10 +40,8 @@ describe("Poseidon Circuit test", function () {
     it("Should check constrain of hash([1, 2]) t=3", async () => {
         const w = await circuit3.calculateWitness({inputs: [1, 2]});
 
-        const hash = poseidon.createHash(3, 8, 57);
-
-        const res2 = hash([1,2]);
-        assert.equal("2104035019328376391822106787753454168168617545136592089411833517434990977743", res2.toString());
+        const res2 = poseidon([1,2]);
+        assert.equal("17117985411748610629288516079940078114952304104811071254131751175361957805920", res2.toString());
         await circuit3.assertOut(w, {out : res2});
         await circuit3.checkConstraints(w);
     });
@@ -65,10 +49,8 @@ describe("Poseidon Circuit test", function () {
     it("Should check constrain of hash([3, 4]) t=3", async () => {
         const w = await circuit3.calculateWitness({inputs: [3, 4]});
 
-        const hash = poseidon.createHash(3, 8, 57);
-
-        const res2 = hash([3, 4]);
-        assert.equal("12456141564250880945411182508630957604732712316993112736876413121277158512223", res2.toString());
+        const res2 = poseidon([3, 4]);
+        assert.equal("21867347236198497199818917118739170715216974132230970409806500217655788551452", res2.toString());
         await circuit3.assertOut(w, {out : res2});
         await circuit3.checkConstraints(w);
     });

test/poseidoncontract.js

@@ -2,7 +2,7 @@ const ganache = require("ganache-cli");
 const Web3 = require("web3");
 const chai = require("chai");
 const poseidonGenContract = require("../src/poseidon_gencontract.js");
-const Poseidon = require("../src/poseidon.js");
+const poseidon = require("../src/poseidon.js");
 
 const assert = chai.assert;
 const log = (msg) => { if (process.env.MOCHA_VERBOSE) console.log(msg); };
@@ -21,44 +21,41 @@ describe("Poseidon Smart contract test", function () {
     });
 
     it("Should deploy the contract", async () => {
-        const C = new web3.eth.Contract(poseidonGenContract.abi);
+        const C6 = new web3.eth.Contract(poseidonGenContract.generateABI(5));
+        const C3 = new web3.eth.Contract(poseidonGenContract.generateABI(2));
 
-        poseidon6 = await C.deploy({
-            data: poseidonGenContract.createCode(6)
+        poseidon6 = await C6.deploy({
+            data: poseidonGenContract.createCode(5)
         }).send({
-            gas: 2500000,
+            gas: 5000000,
             from: accounts[0]
         });
-        poseidon3 = await C.deploy({
-            data: poseidonGenContract.createCode(3)
+        poseidon3 = await C3.deploy({
+            data: poseidonGenContract.createCode(2)
         }).send({
-            gas: 2500000,
+            gas: 5000000,
             from: accounts[0]
         });
     });
 
-    it("Shold calculate the poseidon correctly t=6", async () => {
+    it("Should calculate the poseidon correctly t=6", async () => {
 
-        const res = await poseidon6.methods.poseidon([1,2]).call();
+        const res = await poseidon6.methods.poseidon([1,2, 0, 0, 0]).call();
 
         // console.log("Cir: " + bigInt(res.toString(16)).toString(16));
 
-        const hash = Poseidon.createHash(6, 8, 57);
-
-        const res2 = hash([1,2]);
+        const res2 = poseidon([1,2, 0, 0, 0]);
         // console.log("Ref: " + bigInt(res2).toString(16));
 
         assert.equal(res.toString(), res2.toString());
     });
-    it("Shold calculate the poseidon correctly t=3", async () => {
+    it("Should calculate the poseidon correctly t=3", async () => {
 
         const res = await poseidon3.methods.poseidon([1,2]).call();
 
         // console.log("Cir: " + bigInt(res.toString(16)).toString(16));
 
-        const hash = Poseidon.createHash(3, 8, 57);
-
-        const res2 = hash([1,2]);
+        const res2 = poseidon([1,2]);
         // console.log("Ref: " + bigInt(res2).toString(16));
 
         assert.equal(res.toString(), res2.toString());

test/smtjs.js

@@ -161,4 +161,13 @@ describe("SMT Javascript test", function () {
         assert(Fr.eq(tree1.root, tree2.root));
     });
 
+    it("Should test update with same key-value", async () => {
+        const tree1 = await smt.newMemEmptyTrie();
+
+        await tree1.insert(8,88);
+        await tree1.update(8,88);
+
+        const res = await tree1.db.get(tree1.root);
+        assert.notEqual(res, undefined);
+    });
 });