ethers/lib/utils#randomBytes TypeScript Examples
The following examples show how to use
ethers/lib/utils#randomBytes.
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Example #1
| Source File: utils.ts From hubble-contracts with MIT License | 6 votes |
|
export function randHex(n: number): string {
return hexlify(randomBytes(n));
}
Example #2
| Source File: utils.ts From hubble-contracts with MIT License | 6 votes |
|
export function randFs(): BigNumber {
const r = BigNumber.from(randomBytes(32));
return r.mod(FIELD_ORDER);
}
Example #3
| Source File: utils.ts From hubble-contracts with MIT License | 6 votes |
|
export function randomNum(numBytes: number): number {
const bytes = randomBytes(numBytes);
return BigNumber.from(bytes).toNumber();
}
Example #4
| Source File: bls.test.ts From hubble-contracts with MIT License | 4 votes |
|
describe("BLS", async () => {
let bls: TestBLS;
before(async function() {
const signer = ethers.provider.getSigner();
await deployKeyless(signer, false, { PairingGasEstimators: true });
await mcl.init();
const accounts = await ethers.getSigners();
bls = await new TestBLS__factory(accounts[0]).deploy();
await bls.deployed();
});
it("map to point", async function() {
for (let i = 0; i < 100; i++) {
const e = randFs();
const [expectX, expectY] = mcl.g1ToHex(mcl.mapToPoint(e));
const [actualX, actualY] = await bls.mapToPoint(e);
assert.equal(to32Hex(actualX), expectX, "e " + e);
assert.equal(to32Hex(actualY), expectY, "e " + e);
}
});
it("expand message to 96", async function() {
for (let i = 0; i < 100; i++) {
const msg = randomBytes(i);
const expected = expandMsg(DOMAIN, msg, 96);
const result = await bls.expandMsg(DOMAIN, msg);
assert.equal(result, hexlify(expected));
}
});
it("hash to field", async function() {
for (let i = 0; i < 100; i++) {
const msg = randomBytes(i);
const [expectX, expectY] = hashToField(DOMAIN, msg, 2);
const [actualX, actualY] = await bls.hashToField(DOMAIN, msg);
assert.equal(actualX.toHexString(), expectX.toHexString());
assert.equal(actualY.toHexString(), expectY.toHexString());
}
});
it("hash to point", async function() {
for (let i = 0; i < 100; i++) {
const msg = randHex(i);
const [expectX, expectY] = mcl.g1ToHex(
mcl.hashToPoint(msg, DOMAIN)
);
const [actualX, actualY] = await bls.hashToPoint(DOMAIN, msg);
assert.equal(to32Hex(actualX), expectX);
assert.equal(to32Hex(actualY), expectY);
}
});
it("verify aggregated signature", async function() {
const n = 10;
const messages = [];
const pubkeys = [];
const signatures = [];
for (let i = 0; i < n; i++) {
const message = randHex(12);
const { pubkey, secret } = mcl.newKeyPair();
const { signature, messagePoint } = mcl.sign(
message,
secret,
DOMAIN
);
messages.push(mcl.g1ToHex(messagePoint));
pubkeys.push(mcl.g2ToHex(pubkey));
signatures.push(signature);
const aggSignature = mcl.g1ToHex(mcl.aggregateRaw(signatures));
const { 0: checkResult, 1: callSuccess } = await bls.verifyMultiple(
aggSignature,
pubkeys,
messages
);
assert.isTrue(callSuccess, `call failed i=${i}`);
assert.isTrue(checkResult, `check failed i=${i}`);
}
});
it("verify aggregated signature: fail bad signature", async function() {
const n = 10;
const messages = [];
const pubkeys = [];
const signatures = [];
for (let i = 0; i < n; i++) {
const message = randHex(12);
const { pubkey, secret } = mcl.newKeyPair();
const { signature, messagePoint } = mcl.sign(
message,
secret,
DOMAIN
);
messages.push(mcl.g1ToHex(messagePoint));
pubkeys.push(mcl.g2ToHex(pubkey));
if (i != 0) {
signatures.push(signature);
}
}
const aggSignature = mcl.g1ToHex(mcl.aggregateRaw(signatures));
const res = await bls.verifyMultiple(aggSignature, pubkeys, messages);
assert.isFalse(res[0]);
assert.isTrue(res[1]);
});
it("verify aggregated signature: fail signature is not on curve", async function() {
const n = 10;
const messages = [];
const pubkeys = [];
for (let i = 0; i < n; i++) {
const message = randHex(12);
const { pubkey, secret } = mcl.newKeyPair();
const { messagePoint } = mcl.sign(message, secret, DOMAIN);
messages.push(mcl.g1ToHex(messagePoint));
pubkeys.push(mcl.g2ToHex(pubkey));
}
const aggSignature: mcl.solG1 = [100, 100];
let res = await bls.verifyMultiple(aggSignature, pubkeys, messages);
assert.isFalse(res[0]);
assert.isFalse(res[1]);
});
it("verify aggregated signature: fail pubkey is not on curve", async function() {
const n = 10;
const messages = [];
const pubkeys: mcl.solG2[] = [];
const signatures = [];
for (let i = 0; i < n; i++) {
const message = randHex(12);
const { pubkey, secret } = mcl.newKeyPair();
const { signature, messagePoint } = mcl.sign(
message,
secret,
DOMAIN
);
messages.push(mcl.g1ToHex(messagePoint));
if (i == 0) {
pubkeys.push([3, 3, 3, 3]);
} else {
pubkeys.push(mcl.g2ToHex(pubkey));
}
signatures.push(signature);
}
const aggSignature = mcl.g1ToHex(mcl.aggregateRaw(signatures));
const res = await bls.verifyMultiple(aggSignature, pubkeys, messages);
assert.isFalse(res[0]);
assert.isFalse(res[1]);
});
it("verify aggregated signature: fail pubkey is not on correct subgroup", async function() {
const n = 10;
const messages = [];
const pubkeys = [];
const signatures = [];
for (let i = 0; i < n; i++) {
const message = randHex(12);
const { pubkey, secret } = mcl.newKeyPair();
const { signature, messagePoint } = mcl.sign(
message,
secret,
DOMAIN
);
messages.push(mcl.g1ToHex(messagePoint));
if (i == 0) {
pubkeys.push(g2PointOnIncorrectSubgroup);
assert.isTrue(await bls.isOnCurveG2(pubkeys[i]));
} else {
pubkeys.push(mcl.g2ToHex(pubkey));
}
signatures.push(signature);
}
const aggSignature = mcl.g1ToHex(mcl.aggregateRaw(signatures));
let res = await bls.verifyMultiple(aggSignature, pubkeys, messages);
assert.isFalse(res[0]);
assert.isFalse(res[1]);
});
it("verify single signature", async function() {
const message = randHex(12);
const { pubkey, secret } = mcl.newKeyPair();
const { signature, messagePoint } = mcl.sign(message, secret, DOMAIN);
let res = await bls.verifySingle(
mcl.g1ToHex(signature),
mcl.g2ToHex(pubkey),
mcl.g1ToHex(messagePoint)
);
assert.isTrue(res[0]);
assert.isTrue(res[1]);
});
it("verify single signature: fail bad signature", async function() {
const message = randHex(12);
const { pubkey } = mcl.newKeyPair();
const { secret } = mcl.newKeyPair();
const { signature, messagePoint } = mcl.sign(message, secret, DOMAIN);
let res = await bls.verifySingle(
mcl.g1ToHex(signature),
mcl.g2ToHex(pubkey),
mcl.g1ToHex(messagePoint)
);
assert.isFalse(res[0]);
assert.isTrue(res[1]);
});
it("verify single signature: fail pubkey is not on curve", async function() {
const message = randHex(12);
const { secret } = mcl.newKeyPair();
const { signature, messagePoint } = mcl.sign(message, secret, DOMAIN);
const pubkey: mcl.solG2 = [3, 3, 3, 3];
let res = await bls.verifySingle(
mcl.g1ToHex(signature),
pubkey,
mcl.g1ToHex(messagePoint)
);
assert.isFalse(res[0]);
assert.isFalse(res[1]);
});
it("verify single signature: fail signature is not on curve", async function() {
const message = randHex(12);
const { pubkey, secret } = mcl.newKeyPair();
const { messagePoint } = mcl.sign(message, secret, DOMAIN);
const signature: mcl.solG1 = [3, 3];
let res = await bls.verifySingle(
signature,
mcl.g2ToHex(pubkey),
mcl.g1ToHex(messagePoint)
);
assert.isFalse(res[0]);
assert.isFalse(res[1]);
});
it("verify single signature: fail pubkey is not on correct subgroup", async function() {
const message = randHex(12);
const { secret } = mcl.newKeyPair();
const { signature, messagePoint } = mcl.sign(message, secret, DOMAIN);
const pubkey = g2PointOnIncorrectSubgroup;
assert.isTrue(await bls.isOnCurveG2(pubkey));
let res = await bls.verifySingle(
mcl.g1ToHex(signature),
pubkey,
mcl.g1ToHex(messagePoint)
);
assert.isFalse(res[0]);
assert.isFalse(res[1]);
});
it("is on curve g1", async function() {
for (let i = 0; i < 20; i++) {
const point = mcl.randG1();
let isOnCurve = await bls.isOnCurveG1(point);
assert.isTrue(isOnCurve);
}
for (let i = 0; i < 20; i++) {
const point: mcl.solG1 = [randomBytes(31), randomBytes(31)];
const isOnCurve = await bls.isOnCurveG1(point);
assert.isFalse(isOnCurve);
}
});
it("is on curve g2", async function() {
for (let i = 0; i < 20; i++) {
const point = mcl.randG2();
let isOnCurve = await bls.isOnCurveG2(point);
assert.isTrue(isOnCurve);
}
for (let i = 0; i < 20; i++) {
const point: mcl.solG2 = [
randomBytes(31),
randomBytes(31),
randomBytes(31),
randomBytes(31)
];
const isOnCurve = await bls.isOnCurveG2(point);
assert.isFalse(isOnCurve);
}
});
it.skip("gas cost: verify signature", async function() {
const n = 100;
const messages = [];
const pubkeys = [];
const signatures = [];
for (let i = 0; i < n; i++) {
const message = randHex(12);
const { pubkey, secret } = mcl.newKeyPair();
const { signature, messagePoint } = mcl.sign(
message,
secret,
DOMAIN
);
messages.push(mcl.g1ToHex(messagePoint));
pubkeys.push(mcl.g2ToHex(pubkey));
signatures.push(signature);
}
const aggSignature = mcl.g1ToHex(mcl.aggregateRaw(signatures));
const cost = await bls.callStatic.verifyMultipleGasCost(
aggSignature,
pubkeys,
messages
);
console.log(`verify signature for ${n} message: ${cost.toNumber()}`);
});
it.skip("gas cost: verify single signature", async function() {
const message = randHex(12);
const { pubkey, secret } = mcl.newKeyPair();
const { signature, messagePoint } = mcl.sign(message, secret, DOMAIN);
const cost = await bls.callStatic.verifySingleGasCost(
mcl.g1ToHex(signature),
mcl.g2ToHex(pubkey),
mcl.g1ToHex(messagePoint)
);
console.log(`verify single signature:: ${cost.toNumber()}`);
});
});
