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