circomlib/test/escalarmul.js
2020-04-18 22:33:59 +02:00

116 lines
3.1 KiB
JavaScript

const chai = require("chai");
const path = require("path");
const tester = require("circom").tester;
const babyJub = require("../src/babyjub.js");
const Fr = require("ffjavascript").bn128.Fr;
const assert = chai.assert;
function print(circuit, w, s) {
console.log(s + ": " + w[circuit.getSignalIdx(s)]);
}
describe("Exponentioation test", function () {
this.timeout(100000);
it("Should generate the Exponentiation table in k=0", async () => {
const circuit = await tester(path.join(__dirname, "circuits", "escalarmulw4table_test.circom"));
const w = await circuit.calculateWitness({in: 1});
await circuit.checkConstraints(w);
let g = [
Fr.e("5299619240641551281634865583518297030282874472190772894086521144482721001553"),
Fr.e("16950150798460657717958625567821834550301663161624707787222815936182638968203")
];
let dbl= [Fr.e("0"), Fr.e("1")];
const expectedOut = [];
for (let i=0; i<16; i++) {
expectedOut.push(dbl);
dbl = babyJub.addPoint(dbl,g);
}
await circuit.assertOut(w, {out: expectedOut});
});
it("Should generate the Exponentiation table in k=3", async () => {
const circuit = await tester(path.join(__dirname, "circuits", "escalarmulw4table_test3.circom"));
const w = await circuit.calculateWitness({in: 1});
await circuit.checkConstraints(w);
let g = [
Fr.e("5299619240641551281634865583518297030282874472190772894086521144482721001553"),
Fr.e("16950150798460657717958625567821834550301663161624707787222815936182638968203")
];
for (let i=0; i<12;i++) {
g = babyJub.addPoint(g,g);
}
let dbl= [Fr.e("0"), Fr.e("1")];
const expectedOut = [];
for (let i=0; i<16; i++) {
expectedOut.push(dbl);
dbl = babyJub.addPoint(dbl,g);
}
await circuit.assertOut(w, {out: expectedOut});
});
it("Should exponentiate g^31", async () => {
const circuit = await tester(path.join(__dirname, "circuits", "escalarmul_test.circom"));
const w = await circuit.calculateWitness({"in": 31});
await circuit.checkConstraints(w);
let g = [
Fr.e("5299619240641551281634865583518297030282874472190772894086521144482721001553"),
Fr.e("16950150798460657717958625567821834550301663161624707787222815936182638968203")
];
let c = [Fr.e(0), Fr.e(1)];
for (let i=0; i<31;i++) {
c = babyJub.addPoint(c,g);
}
await circuit.assertOut(w, {out: c});
const w2 = await circuit.calculateWitness({"in": Fr.add(Fr.shl(Fr.e(1), Fr.e(252)),Fr.one)});
c = [g[0], g[1]];
for (let i=0; i<252;i++) {
c = babyJub.addPoint(c,c);
}
c = babyJub.addPoint(c,g);
await circuit.assertOut(w2, {out: c});
}).timeout(10000000);
it("Number of constrains for 256 bits", async () => {
const circuit = await tester(path.join(__dirname, "circuits", "escalarmul_test_min.circom"));
}).timeout(10000000);
});