From b651b83accc414dd3e5def873cb98dac6155f1db Mon Sep 17 00:00:00 2001 From: Cayman Date: Mon, 5 Aug 2019 10:48:26 -0500 Subject: [PATCH] Move to packages/bls --- .babel-register | 15 ++ .babelrc | 11 + .gitignore | 66 ++++++ LICENSE | 201 +++++++++++++++++ README.md | 31 +++ package.json | 72 ++++++ src/@types/keccak256/index.d.ts | 5 + src/@types/secure-random/index.d.ts | 3 + src/constants.ts | 4 + src/ctx.ts | 3 + src/helpers/ec-pairing.ts | 14 ++ src/helpers/g1point.ts | 122 +++++++++++ src/helpers/g2point.ts | 248 +++++++++++++++++++++ src/helpers/utils.ts | 34 +++ src/index.ts | 132 +++++++++++ src/keypair.ts | 31 +++ src/privateKey.ts | 64 ++++++ src/publicKey.ts | 36 +++ src/signature.ts | 35 +++ src/types.ts | 9 + src/web.ts | 8 + tests/spec/aggregate_pubkeys.test.ts | 21 ++ tests/spec/aggregate_sigs.test.ts | 22 ++ tests/spec/g2_compressed.test.ts | 23 ++ tests/spec/g2_uncompressed.test.ts | 28 +++ tests/spec/priv_to_public.test.ts | 14 ++ tests/spec/sign_message.test.ts | 20 ++ tests/spec/spec-tests | 1 + tests/unit/helpers/g1point.test.ts | 109 ++++++++++ tests/unit/helpers/g2point.test.ts | 153 +++++++++++++ tests/unit/helpers/utils.test.ts | 27 +++ tests/unit/index.test.ts | 313 +++++++++++++++++++++++++++ tests/unit/keypair.test.ts | 25 +++ tests/unit/privateKey.test.ts | 22 ++ tsconfig.json | 64 ++++++ 35 files changed, 1986 insertions(+) create mode 100644 .babel-register create mode 100644 .babelrc create mode 100644 .gitignore create mode 100644 LICENSE create mode 100644 README.md create mode 100644 package.json create mode 100644 src/@types/keccak256/index.d.ts create mode 100644 src/@types/secure-random/index.d.ts create mode 100644 src/constants.ts create mode 100644 src/ctx.ts create mode 100644 src/helpers/ec-pairing.ts create mode 100644 src/helpers/g1point.ts create mode 100644 src/helpers/g2point.ts create mode 100644 src/helpers/utils.ts create mode 100644 src/index.ts create mode 100644 src/keypair.ts create mode 100644 src/privateKey.ts create mode 100644 src/publicKey.ts create mode 100644 src/signature.ts create mode 100644 src/types.ts create mode 100644 src/web.ts create mode 100644 tests/spec/aggregate_pubkeys.test.ts create mode 100644 tests/spec/aggregate_sigs.test.ts create mode 100644 tests/spec/g2_compressed.test.ts create mode 100644 tests/spec/g2_uncompressed.test.ts create mode 100644 tests/spec/priv_to_public.test.ts create mode 100644 tests/spec/sign_message.test.ts create mode 160000 tests/spec/spec-tests create mode 100644 tests/unit/helpers/g1point.test.ts create mode 100644 tests/unit/helpers/g2point.test.ts create mode 100644 tests/unit/helpers/utils.test.ts create mode 100644 tests/unit/index.test.ts create mode 100644 tests/unit/keypair.test.ts create mode 100644 tests/unit/privateKey.test.ts create mode 100644 tsconfig.json diff --git a/.babel-register b/.babel-register new file mode 100644 index 0000000..35d91b6 --- /dev/null +++ b/.babel-register @@ -0,0 +1,15 @@ +/* + See + https://github.com/babel/babel/issues/8652 + https://github.com/babel/babel/pull/6027 + Babel isn't currently configured by default to read .ts files and + can only be configured to do so via cli or configuration below. + + This file is used by mocha to interpret test files using a properly + configured babel. + + This can (probably) be removed in babel 8.x. +*/ +require('@babel/register')({ + extensions: ['.ts'], +}) diff --git a/.babelrc b/.babelrc new file mode 100644 index 0000000..b042a78 --- /dev/null +++ b/.babelrc @@ -0,0 +1,11 @@ +{ + "presets": [ + "@babel/env", + "@babel/typescript" + ], + "plugins": [ + "@babel/proposal-class-properties", + "@babel/proposal-object-rest-spread", + "rewire-exports" + ] +} diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..435d202 --- /dev/null +++ b/.gitignore @@ -0,0 +1,66 @@ +# Logs +logs +*.log +npm-debug.log* +yarn-debug.log* +yarn-error.log* + +# Runtime data +pids +*.pid +*.seed +*.pid.lock + +# Directory for 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We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright [yyyy] [name of copyright owner] + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. diff --git a/README.md b/README.md new file mode 100644 index 0000000..3140b40 --- /dev/null +++ b/README.md @@ -0,0 +1,31 @@ +### ChainSafe ETH2.0 Projects +Note: +There is a lot of work being done that are core infrastructural pieces for Eth2.0. Contributions to any of the below repositories would be greatly appreciated. All the libraries are written in TypeScript (or in the process of being converted from pure JS to TypeScript): +
+-- [PM / Meta Repo](https://github.com/ChainSafe/Sharding)
+|-- [Beacon Chain](https://github.com/ChainSafe/lodestar_chain)
+|-- [Simple Serialize (SSZ)](https://github.com/ChainSafe/ssz-js)
+|-- [Fixed Size Numbers](https://github.com/ChainSafe/fixed-sized-numbers-ts/)
+|-- [BLS Signatures and Signature Aggregation](https://github.com/ChainSafe/bls-js)
+ +# bls-js + +[![Build Status](https://travis-ci.org/ChainSafe/bls-js.svg?branch=master)](https://travis-ci.org/ChainSafe/bls-js) +[![codecov](https://codecov.io/gh/ChainSafe/bls-js/branch/master/graph/badge.svg)](https://codecov.io/gh/ChainSafe/bls-js) +[![](https://badges.gitter.im/chainsafe/lodestar.svg)](https://gitter.im/chainsafe/lodestar?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) +![ETH2.0_Spec_Version 0.8.0](https://img.shields.io/badge/ETH2.0_Spec_Version-0.8.0-2e86c1.svg) + +This is a Javascript library that implements BLS (Boneh-Lynn-Shacham) signatures and supports signature aggregation. + +>[spec](https://github.com/ethereum/eth2.0-specs/blob/master/specs/bls_signature.md) + +>[test vectors](https://github.com/ethereum/eth2.0-spec-tests/tree/master/tests/bls) + +## Usage +- `yarn add @chainsafe/bls` + +## Development +- `git clone --recursive git@github.com:ChainSafe/bls-js.git` +- `yarn install` +- `yarn test` + diff --git a/package.json b/package.json new file mode 100644 index 0000000..f24f5c4 --- /dev/null +++ b/package.json @@ -0,0 +1,72 @@ +{ + "name": "@chainsafe/bls", + "version": "0.1.6", + "description": "Implementation of bls signature verification for ethereum 2.0", + "main": "lib/index.js", + "types": "lib/index.d.ts", + "homepage": "https://github.com/chainsafe/bls-js", + "author": "ChainSafe Systems", + "license": "Apache-2.0", + "files": [ + "lib" + ], + "keywords": [ + "ethereum", + "serenity", + "signature verification", + "bls" + ], + "scripts": { + "prebuild": "rm -rf lib && rm -rf dist", + "build": "yarn build-lib && yarn build-web && yarn build-types", + "build-lib": "babel src -x .ts -d lib", + "build-types": "tsc --declaration --emitDeclarationOnly", + "build-web": "webpack --mode production --entry ./lib/web.js --output ./dist/bls.min.js", + "check-types": "tsc --noEmit", + "lint": "eslint --ext .ts src/", + "lint-fix": "eslint --ext .ts src/ --fix", + "pretest": "yarn check-types", + "prepublishOnly": "yarn build", + "test:unit": "mocha -r ./.babel-register \"tests/unit/**/*.test.ts\"", + "test:spec": "mocha -r ./.babel-register \"tests/spec/**/*.test.ts\"", + "test": "nyc -r lcov -e .ts -x \"*.test.ts\" mocha -r ./.babel-register \"tests/**/*.test.ts\" && nyc report", + "coverage": "codecov" + }, + "dependencies": { + "@chainsafe/milagro-crypto-js": "0.1.3", + "assert": "^1.4.1", + "js-sha256": "^0.9.0", + "secure-random": "^1.1.1" + }, + "devDependencies": { + "@babel/cli": "^7.2.3", + "@babel/core": "^7.3.3", + "@babel/plugin-proposal-class-properties": "^7.3.3", + "@babel/plugin-proposal-object-rest-spread": "^7.3.2", + "@babel/plugin-transform-runtime": "^7.3.4", + "@babel/preset-env": "^7.4.4", + "@babel/preset-typescript": "^7.3.3", + "@babel/register": "^7.0.0", + "@babel/runtime": "^7.4.4", + "@chainsafe/eth2.0-spec-test-util": "^0.2.3", + "@types/assert": "^1.4.2", + "@types/chai": "^4.1.7", + "@types/mocha": "^5.2.5", + "@types/node": "^10.12.17", + "@typescript-eslint/eslint-plugin": "^1.3.0", + "@typescript-eslint/parser": "^1.3.0", + "babel-plugin-rewire-exports": "^1.1.0", + "chai": "^4.2.0", + "codecov": "^3.1.0", + "eslint": "^5.14.1", + "js-yaml": "^3.13.1", + "mocha": "^5.2.0", + "nyc": "^13.3.0", + "sinon": "^7.2.7", + "supertest": "^4.0.2", + "ts-node": "^7.0.1", + "typescript": "^3.2.1", + "webpack": "^4.30.0", + "webpack-cli": "^3.3.2" + } +} diff --git a/src/@types/keccak256/index.d.ts b/src/@types/keccak256/index.d.ts new file mode 100644 index 0000000..75e63d9 --- /dev/null +++ b/src/@types/keccak256/index.d.ts @@ -0,0 +1,5 @@ +declare module 'keccak256' { + + export default function hash(a: Buffer | (Buffer | string | number)[]): Buffer; + +} diff --git a/src/@types/secure-random/index.d.ts b/src/@types/secure-random/index.d.ts new file mode 100644 index 0000000..8bc37d3 --- /dev/null +++ b/src/@types/secure-random/index.d.ts @@ -0,0 +1,3 @@ +declare module "secure-random" { + export function randomBuffer(length: number): Buffer; +} diff --git a/src/constants.ts b/src/constants.ts new file mode 100644 index 0000000..225405a --- /dev/null +++ b/src/constants.ts @@ -0,0 +1,4 @@ +export const SECRET_KEY_LENGTH = 32; +export const FP_POINT_LENGTH = 48; +export const PUBLIC_KEY_LENGTH = FP_POINT_LENGTH; +export const G2_HASH_PADDING = 16; diff --git a/src/ctx.ts b/src/ctx.ts new file mode 100644 index 0000000..9939f27 --- /dev/null +++ b/src/ctx.ts @@ -0,0 +1,3 @@ +import CTX from "@chainsafe/milagro-crypto-js"; + +export default new CTX("BLS381"); diff --git a/src/helpers/ec-pairing.ts b/src/helpers/ec-pairing.ts new file mode 100644 index 0000000..c2d2bef --- /dev/null +++ b/src/helpers/ec-pairing.ts @@ -0,0 +1,14 @@ +import {G1point} from "./g1point"; +import {G2point} from "./g2point"; +import {FP12} from "@chainsafe/milagro-crypto-js/src/fp12"; +import ctx from "../ctx"; + + +export class ElipticCurvePairing { + + public static pair(p1: G1point, p2: G2point): FP12 { + const e = ctx.PAIR.ate(p2.getPoint(), p1.getPoint()); + return ctx.PAIR.fexp(e); + } + +} diff --git a/src/helpers/g1point.ts b/src/helpers/g1point.ts new file mode 100644 index 0000000..8e087b4 --- /dev/null +++ b/src/helpers/g1point.ts @@ -0,0 +1,122 @@ +import {BIG} from "@chainsafe/milagro-crypto-js/src/big"; +import {ECP} from "@chainsafe/milagro-crypto-js/src/ecp"; +import ctx from "../ctx"; +import {bytes48} from "../types"; +import assert from "assert"; +import {calculateYFlag, getModulus} from "./utils"; +import * as random from "secure-random"; +import {FP_POINT_LENGTH} from "../constants"; + +export class G1point { + + private point: ECP; + + public constructor(point: ECP) { + this.point = point; + } + + public mul(value: BIG): G1point { + const newPoint = this.point.mul(value); + return new G1point(newPoint); + } + + public add(other: G1point): G1point { + const sum = new ctx.ECP(); + sum.add(this.point); + sum.add(other.point); + sum.affine(); + return new G1point(sum); + } + + public equal(other: G1point): boolean { + return this.point.equals(other.point); + } + + public toBytes(): bytes48 { + const buffer = Buffer.alloc(FP_POINT_LENGTH, 0); + this.point.getX().tobytearray(buffer, 0); + return buffer; + } + + public getPoint(): ECP { + return this.point; + } + + public toBytesCompressed(): bytes48 { + const output = this.toBytes(); + const c = true; + const b = this.point.is_infinity(); + const a = !b && calculateYFlag(this.point.getY()); + + const flags = ((a ? 1 << 5 : 0) | (b ? 1 << 6 : 0) | (c ? 1 << 7 : 0)); + const mask = 31; + output[0] &= mask; + output[0] |= flags; + return output; + } + + public static fromBytesCompressed(value: bytes48): G1point { + assert(value.length === FP_POINT_LENGTH, `Expected g1 compressed input to have ${FP_POINT_LENGTH} bytes`); + value = Buffer.from(value); + const aIn = (value[0] & (1 << 5)) != 0; + const bIn = (value[0] & (1 << 6)) != 0; + const cIn = (value[0] & (1 << 7)) != 0; + value[0] &= 31; + + if (!cIn) { + throw new Error("The serialised input does not have the C flag set."); + } + + const x = ctx.BIG.frombytearray(value, 0); + if (bIn) { + if (!aIn && x.iszilch()) { + // This is a correctly formed serialisation of infinity + return new G1point(new ctx.ECP()); + } else { + // The input is malformed + throw new Error( + "The serialised input has B flag set, but A flag is set, or X is non-zero."); + } + } + const modulus = getModulus(); + if (ctx.BIG.comp(modulus, x) <= 0) { + throw new Error("X coordinate is too large."); + } + + let point = new ctx.ECP(); + point.setx(x); + + if (point.is_infinity()) { + throw new Error("X coordinate is not on the curve."); + } + + // Did we get the right branch of the sqrt? + if (!point.is_infinity() && aIn != calculateYFlag(point.getY())) { + // We didn't: so choose the other branch of the sqrt. + const x = new ctx.FP(point.getX()); + const yneg = new ctx.FP(point.getY()); + yneg.neg(); + point.setxy(x.redc(), yneg.redc()) + } + + return new G1point(point); + } + + public static generator(): G1point { + return new G1point(ctx.ECP.generator()); + } + + public static random(): G1point { + let ecp: ECP; + do { + ecp = new ctx.ECP(); + ecp.setx( + ctx.BIG.frombytearray( + random.randomBuffer(FP_POINT_LENGTH), + 0 + ) + ) + } while (ecp.is_infinity()); + return new G1point(ecp); + } +} diff --git a/src/helpers/g2point.ts b/src/helpers/g2point.ts new file mode 100644 index 0000000..2eaab98 --- /dev/null +++ b/src/helpers/g2point.ts @@ -0,0 +1,248 @@ +import {BIG} from "@chainsafe/milagro-crypto-js/src/big"; +import {ECP2} from "@chainsafe/milagro-crypto-js/src/ecp2"; +import {BLSDomain, bytes32, bytes96} from "../types"; +import { sha256 } from 'js-sha256'; +import ctx from "../ctx"; +import * as random from "secure-random"; +import {calculateYFlag, getModulus, padLeft} from "./utils"; +import assert from "assert"; +import {FP_POINT_LENGTH, G2_HASH_PADDING} from "../constants"; + +export class G2point { + + private point: ECP2; + + public constructor(point: ECP2) { + this.point = point; + } + + public add(other: G2point): G2point { + const sum = new ctx.ECP2(); + sum.add(this.point); + sum.add(other.point); + sum.affine(); + return new G2point(sum); + } + + public mul(value: BIG): G2point { + const newPoint = this.point.mul(value); + return new G2point(newPoint); + } + + public equal(other: G2point): boolean { + return this.point.equals(other.point); + } + + public getPoint(): ECP2 { + return this.point; + } + + public toBytesCompressed(): Buffer { + const xReBytes = Buffer.alloc(FP_POINT_LENGTH, 0); + const xImBytes = Buffer.alloc(FP_POINT_LENGTH, 0); + this.point.getX().getA().tobytearray(xReBytes, 0); + this.point.getX().getB().tobytearray(xImBytes, 0); + const c1 = true; + const b1 = this.point.is_infinity(); + const a1 = !b1 && calculateYFlag(this.point.getY().getB()); + + const flags = ((a1 ? 1 << 5 : 0) | (b1 ? 1 << 6 : 0) | (c1 ? 1 << 7 : 0)); + const mask = 31; + xImBytes[0] &= mask; + xImBytes[0] |= flags; + xReBytes[0] &= mask; + + return Buffer.concat([ + xImBytes, + xReBytes + ]); + } + + public static hashToG2(message: bytes32, domain: BLSDomain): G2point { + const padding = Buffer.alloc(G2_HASH_PADDING, 0); + const xReBytes = Buffer.concat([ + padding, + Buffer.from(sha256.arrayBuffer( + Buffer.concat([ + message, + padLeft(domain, 8), + Buffer.from('01', 'hex') + ]) + )) + ]); + const xImBytes = Buffer.concat([ + padding, + Buffer.from(sha256.arrayBuffer( + Buffer.concat([ + message, + padLeft(domain, 8), + Buffer.from('02', 'hex') + ]) + )) + ]); + const xRe = ctx.BIG.frombytearray(xReBytes, 0); + const xIm = ctx.BIG.frombytearray(xImBytes, 0); + const one = new ctx.BIG(1); + let point = new ctx.ECP2(); + point.setx(new ctx.FP2(xRe, xIm)); + while (point.is_infinity()) { + xRe.add(one); + xRe.norm(); + point = new ctx.ECP2(); + point.setx(new ctx.FP2(xRe, xIm)) + } + return new G2point(G2point.scaleWithCofactor(G2point.normaliseY(point))); + } + + public static fromCompressedBytes(value: bytes96): G2point { + assert(value.length === 2 * FP_POINT_LENGTH, 'Expected signature of 96 bytes'); + value = Buffer.from(value); + const xImBytes = value.slice(0, FP_POINT_LENGTH); + const xReBytes = value.slice(FP_POINT_LENGTH); + const aIn = (xImBytes[0] & (1 << 5)) != 0; + const bIn = (xImBytes[0] & (1 << 6)) != 0; + const cIn = (xImBytes[0] & (1 << 7)) != 0; + //clear bits + xImBytes[0] &= 31; + if((xReBytes[0] & 224) != 0) { + throw new Error("The input has non-zero a2, b2 or c2 flag on xRe"); + } + if(!cIn) { + throw new Error("The serialised input does not have the C flag set."); + } + const xIm = ctx.BIG.frombytearray(xImBytes, 0); + const xRe = ctx.BIG.frombytearray(xReBytes, 0); + if (bIn) { + if (!aIn + && xIm.iszilch() + && xRe.iszilch() ) { + // This is a correctly formed serialisation of infinity + return new G2point(new ctx.ECP2()); + } else { + // The input is malformed + throw new Error( + "The serialised input has B flag set, but A flag is set, or X is non-zero."); + } + } + + const modulus = getModulus(); + if(ctx.BIG.comp(modulus, xRe) <= 0 || ctx.BIG.comp(modulus, xIm) <= 0) { + throw new Error( + "The deserialised X real or imaginary coordinate is too large."); + } + + let point = new ctx.ECP2(); + point.setx(new ctx.FP2(xRe, xIm)); + if(point.is_infinity()) { + throw new Error("X coordinate is not on the curve."); + } + + if (!point.is_infinity() && aIn != calculateYFlag(point.getY().getB())) { + // We didn't: so choose the other branch of the sqrt. + const x = point.getX(); + const yneg = point.getY(); + yneg.neg(); + point.setxy(x, yneg); + } + + return new G2point(point); + } + + public static fromUncompressedInput( + xReBytes: Buffer, + xImBytes: Buffer, + yReBytes: Buffer, + yImBytes: Buffer, + zReBytes: Buffer, + zImBytes: Buffer): G2point { + const xRe = ctx.BIG.frombytearray(padLeft(xReBytes, FP_POINT_LENGTH), 0); + const xIm = ctx.BIG.frombytearray(padLeft(xImBytes, FP_POINT_LENGTH), 0); + const yRe = ctx.BIG.frombytearray(padLeft(yReBytes, FP_POINT_LENGTH), 0); + const yIm = ctx.BIG.frombytearray(padLeft(yImBytes, FP_POINT_LENGTH), 0); + const zRe = ctx.BIG.frombytearray(padLeft(zReBytes, FP_POINT_LENGTH), 0); + const zIm = ctx.BIG.frombytearray(padLeft(zImBytes, FP_POINT_LENGTH), 0); + const x = new ctx.FP2(xRe, xIm); + const y = new ctx.FP2(yRe, yIm); + const z = new ctx.FP2(zRe, zIm); + z.inverse(); + x.mul(z); + x.reduce(); + y.mul(z); + y.reduce(); + const point = new ctx.ECP2(); + point.setxy(x, y); + return new G2point(point); + } + + public static random(): G2point { + let point: ECP2; + do { + point = new ctx.ECP2(); + point.setx( + new ctx.FP2( + ctx.BIG.frombytearray( + random.randomBuffer(FP_POINT_LENGTH), + 0 + ), + ctx.BIG.frombytearray( + random.randomBuffer(FP_POINT_LENGTH), + 0 + ) + ) + ) + } while (point.is_infinity()); + return new G2point(point); + } + + public static scaleWithCofactor(point: ECP2): ECP2 { + const upper = ctx.BIG.frombytearray( + Buffer.from( + "0000000000000000000000000000000005d543a95414e7f1091d50792876a202cd91de4547085abaa68a205b2e5a7ddf", + "hex" + ), + 0 + ); + const lower = ctx.BIG.frombytearray( + Buffer.from( + "00000000000000000000000000000000a628f1cb4d9e82ef21537e293a6691ae1616ec6e786f0c70cf1c38e31c7238e5", + "hex" + ), + 0 + ); + const shift = ctx.BIG.frombytearray( + Buffer.from( + "000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000", + "hex" + ), + 0 + ); + let sum = new ctx.ECP2(); + sum.copy(point); + sum = sum.mul(upper); + sum = sum.mul(shift); + + let tmp = new ctx.ECP2(); + tmp.copy(point); + tmp = tmp.mul(lower); + + sum.add(tmp); + + return sum; + } + + public static normaliseY(point: ECP2): ECP2 { + const y = point.getY(); + const yNeg = new ctx.FP2(y); + yNeg.neg(); + if (ctx.BIG.comp(y.getB(), yNeg.getB()) < 0 + || ((ctx.BIG.comp(y.getB(), yNeg.getB()) == 0) + && ctx.BIG.comp(y.getA(), yNeg.getA()) < 0) + ) { + const newPoint = new ctx.ECP2(); + newPoint.setxy(point.getX(), yNeg); + return newPoint + } else { + return point; + } + } +} diff --git a/src/helpers/utils.ts b/src/helpers/utils.ts new file mode 100644 index 0000000..4bac7ba --- /dev/null +++ b/src/helpers/utils.ts @@ -0,0 +1,34 @@ +import assert from "assert"; +import {BIG} from "@chainsafe/milagro-crypto-js/src/big"; +import ctx from "../ctx"; + +/** + * Pads byte array with zeroes on left side up to desired length. + * Throws if source is larger than desired result. + * @param source + * @param length + */ +export function padLeft(source: Buffer, length: number): Buffer { + assert(source.length <= length, 'Given array must be smaller or equal to desired array size'); + const result = Buffer.alloc(length, 0); + source.copy(result, length - source.length); + return result; +} + +//TODO: find a way to convert ctx.ROM_FIELD.MODULUS to BIG (MODULUS basebit = 58, BIG basebit=23 +export function getModulus(): BIG { + return ctx.BIG.frombytearray( + Buffer.from( + '1a0111ea397fe69a4b1ba7b6434bacd764774b84f38512bf6730d2a0f6b0f6241eabfffeb153ffffb9feffffffffaaab', + 'hex' + ), + 0 + ) +} + +export function calculateYFlag(yIm: BIG): boolean { + const tmp = new ctx.BIG(yIm); + tmp.add(yIm); + tmp.div(getModulus()); + return tmp.isunity(); +} diff --git a/src/index.ts b/src/index.ts new file mode 100644 index 0000000..31616a7 --- /dev/null +++ b/src/index.ts @@ -0,0 +1,132 @@ +import { + BLSDomain, + BLSSecretKey, + BLSPubkey, + BLSSignature, + bytes32, + bytes8 +} from "./types"; +import {Keypair} from "./keypair"; +import {PrivateKey} from "./privateKey"; +import {G2point} from "./helpers/g2point"; +import {G1point} from "./helpers/g1point"; +import {PublicKey} from "./publicKey"; +import {Signature} from "./signature"; +import {ElipticCurvePairing} from "./helpers/ec-pairing"; +import ctx from "./ctx"; + +/** + * Generates new secret and public key + */ +function generateKeyPair(): Keypair { + return Keypair.generate(); +} + +/** + * Generates public key from given secret. + * @param {BLSSecretKey} secretKey + */ +function generatePublicKey(secretKey: BLSSecretKey): BLSPubkey { + const keypair = new Keypair(PrivateKey.fromBytes(secretKey)); + return keypair.publicKey.toBytesCompressed(); +} + +/** + * Signs given message using secret key. + * @param secretKey + * @param messageHash + * @param domain + */ +function sign(secretKey: BLSSecretKey, messageHash: bytes32, domain: BLSDomain): BLSSignature { + const privateKey = PrivateKey.fromBytes(secretKey); + const hash = G2point.hashToG2(messageHash, domain); + return privateKey.sign(hash).toBytesCompressed(); +} + +/** + * Compines all given signature into one. + * @param signatures + */ +function aggregateSignatures(signatures: BLSSignature[]): BLSSignature { + return signatures.map((signature): Signature => { + return Signature.fromCompressedBytes(signature) + }).reduce((previousValue, currentValue): Signature => { + return previousValue.add(currentValue); + }).toBytesCompressed(); +} + +/** + * Combines all given public keys into single one + * @param publicKeys + */ +function aggregatePubkeys(publicKeys: BLSPubkey[]): BLSPubkey { + if(publicKeys.length === 0) { + return new G1point(new ctx.ECP()).toBytesCompressed(); + } + return publicKeys.map((publicKey): G1point => { + return G1point.fromBytesCompressed(publicKey) + }).reduce((previousValue, currentValue): G1point => { + return previousValue.add(currentValue); + }).toBytesCompressed(); +} + +/** + * Verifies if signature is message signed with given public key. + * @param publicKey + * @param messageHash + * @param signature + * @param domain + */ +function verify(publicKey: BLSPubkey, messageHash: bytes32, signature: BLSSignature, domain: bytes8): boolean { + try { + const key = PublicKey.fromBytes(publicKey); + const sig = Signature.fromCompressedBytes(signature); + + const g1Generated = G1point.generator(); + const e1 = ElipticCurvePairing.pair(key.getPoint(), G2point.hashToG2(messageHash, domain)); + const e2 = ElipticCurvePairing.pair(g1Generated, sig.getPoint()); + return e1.equals(e2); + } catch (e) { + return false; + } +} + +/** + * Verifies if signature is list of message signed with corresponding public key. + * @param publicKeys + * @param messageHashes + * @param signature + * @param domain + */ +function verifyMultiple(publicKeys: BLSPubkey[], messageHashes: bytes32[], signature: BLSSignature, domain: bytes8): boolean { + if(publicKeys.length === 0 || publicKeys.length != messageHashes.length) { + return false; + } + try { + const g1Generated = G1point.generator(); + const eCombined = new ctx.FP12(1); + publicKeys.forEach((publicKey, index): void => { + const g2 = G2point.hashToG2(messageHashes[index], domain); + eCombined.mul( + ElipticCurvePairing.pair( + PublicKey.fromBytes(publicKey).getPoint(), + g2 + ) + ); + }); + const e2 = ElipticCurvePairing.pair(g1Generated, Signature.fromCompressedBytes(signature).getPoint()); + return e2.equals(eCombined); + } catch (e) { + return false; + } +} + +export default { + generateKeyPair, + generatePublicKey, + sign, + aggregateSignatures, + aggregatePubkeys, + verify, + verifyMultiple +} diff --git a/src/keypair.ts b/src/keypair.ts new file mode 100644 index 0000000..953e7ab --- /dev/null +++ b/src/keypair.ts @@ -0,0 +1,31 @@ +import {PublicKey} from "./publicKey"; +import {PrivateKey} from "./privateKey"; + + +export class Keypair { + + private _publicKey: PublicKey; + + private _privateKey: PrivateKey; + + public constructor(privateKey: PrivateKey, publicKey?: PublicKey) { + this._privateKey = privateKey; + if(!publicKey) { + this._publicKey = PublicKey.fromPrivateKey(this._privateKey); + } else { + this._publicKey = publicKey; + } + } + + public get publicKey(): PublicKey { + return this._publicKey; + } + + public get privateKey(): PrivateKey { + return this._privateKey; + } + + public static generate(): Keypair { + return new Keypair(PrivateKey.random()); + } +} diff --git a/src/privateKey.ts b/src/privateKey.ts new file mode 100644 index 0000000..e99dba2 --- /dev/null +++ b/src/privateKey.ts @@ -0,0 +1,64 @@ +import {BIG} from "@chainsafe/milagro-crypto-js/src/big"; +import {FP_POINT_LENGTH, SECRET_KEY_LENGTH} from "./constants"; +import assert from "assert"; +import ctx from "./ctx"; +import {padLeft} from "./helpers/utils"; +import {G2point} from "./helpers/g2point"; +import * as random from "secure-random"; +import {BLSDomain, BLSSecretKey, bytes32} from "./types"; + +export class PrivateKey { + + private value: BIG; + + public constructor(value: BIG) { + this.value = value; + } + + public getValue(): BIG { + return this.value; + } + + public sign(message: G2point): G2point { + return message.mul(this.value); + } + + public signMessage(message: bytes32, domain: BLSDomain): G2point { + return G2point.hashToG2(message, domain).mul(this.value); + } + + public toBytes(): BLSSecretKey { + const buffer = Buffer.alloc(FP_POINT_LENGTH, 0); + this.value.tobytearray(buffer, 0); + return buffer.slice(FP_POINT_LENGTH - SECRET_KEY_LENGTH); + } + + public toHexString(): string { + return `0x${this.toBytes().toString('hex')}`; + } + + public static fromBytes(bytes: Uint8Array): PrivateKey { + assert(bytes.length === SECRET_KEY_LENGTH, 'Private key should have 32 bytes'); + const value = Buffer.from(bytes); + return new PrivateKey( + ctx.BIG.frombytearray( + padLeft( + value, + 48 + ), + 0 + ) + ) + } + + public static fromHexString(value: string): PrivateKey { + return PrivateKey.fromBytes( + Buffer.from(value.replace('0x', ''), 'hex') + ); + } + + public static random(): PrivateKey { + return PrivateKey.fromBytes(random.randomBuffer(SECRET_KEY_LENGTH)); + } + +} diff --git a/src/publicKey.ts b/src/publicKey.ts new file mode 100644 index 0000000..6d734a1 --- /dev/null +++ b/src/publicKey.ts @@ -0,0 +1,36 @@ +import {G1point} from "./helpers/g1point"; +import {PrivateKey} from "./privateKey"; +import {BLSPubkey} from "./types"; + +export class PublicKey { + + private point: G1point; + + public constructor(point: G1point) { + this.point = point; + } + + public getPoint(): G1point { + return this.point; + } + + public toBytesCompressed(): BLSPubkey { + return this.point.toBytesCompressed(); + } + + public toHexString(): string { + return `0x${this.toBytesCompressed().toString('hex')}`; + } + + public static fromPrivateKey(privateKey: PrivateKey): PublicKey { + return new PublicKey( + G1point.generator().mul(privateKey.getValue()) + ); + } + + public static fromBytes(publicKey: BLSPubkey): PublicKey { + return new PublicKey( + G1point.fromBytesCompressed(publicKey) + ); + } +} diff --git a/src/signature.ts b/src/signature.ts new file mode 100644 index 0000000..89dee16 --- /dev/null +++ b/src/signature.ts @@ -0,0 +1,35 @@ +import {G2point} from "./helpers/g2point"; +import {BLSSignature} from "./types"; +import assert from "assert"; +import {FP_POINT_LENGTH} from "./constants"; + +export class Signature { + + private point: G2point; + + public constructor(point: G2point) { + this.point = point; + } + + public add(other: Signature): Signature { + return new Signature( + this.point.add(other.point) + ); + } + + public getPoint(): G2point { + return this.point; + } + + public toBytesCompressed(): BLSSignature { + return this.point.toBytesCompressed(); + } + + public static fromCompressedBytes(signature: BLSSignature): Signature { + assert( + signature.length === 2 * FP_POINT_LENGTH, + `Signature must have ${2 * FP_POINT_LENGTH} bytes` + ); + return new Signature(G2point.fromCompressedBytes(signature)); + } +} diff --git a/src/types.ts b/src/types.ts new file mode 100644 index 0000000..6a6346a --- /dev/null +++ b/src/types.ts @@ -0,0 +1,9 @@ +export type bytes8 = Buffer; +export type bytes32 = Buffer; +export type bytes48 = Buffer; +export type bytes96 = Buffer; + +export type BLSDomain = bytes8; +export type BLSPubkey = bytes48; +export type BLSSecretKey = bytes32; +export type BLSSignature = bytes96; diff --git a/src/web.ts b/src/web.ts new file mode 100644 index 0000000..08397b6 --- /dev/null +++ b/src/web.ts @@ -0,0 +1,8 @@ +import bls from "./index" + +// eslint-disable-next-line @typescript-eslint/no-explicit-any +// @ts-ignore +(function (window: any) { + window.bls = bls + // @ts-ignore +})(window); diff --git a/tests/spec/aggregate_pubkeys.test.ts b/tests/spec/aggregate_pubkeys.test.ts new file mode 100644 index 0000000..775cb60 --- /dev/null +++ b/tests/spec/aggregate_pubkeys.test.ts @@ -0,0 +1,21 @@ +import {join} from "path"; +import {describeSpecTest} from "@chainsafe/eth2.0-spec-test-util"; +import bls from "../../src"; +import {BLSSignature} from "../../src/types"; + +describeSpecTest( + join(__dirname, "./spec-tests/tests/bls/aggregate_pubkeys/aggregate_pubkeys.yaml"), + bls.aggregatePubkeys, + ({input}) => { + const sigs: BLSSignature[] = []; + input.forEach((sig: string) => { + sigs.push(Buffer.from(sig.replace('0x', ''), 'hex')) + }); + return [ + sigs + ]; + }, + ({output}) => output, + (result) => `0x${result.toString('hex')}`, + () => false, +); diff --git a/tests/spec/aggregate_sigs.test.ts b/tests/spec/aggregate_sigs.test.ts new file mode 100644 index 0000000..7abc949 --- /dev/null +++ b/tests/spec/aggregate_sigs.test.ts @@ -0,0 +1,22 @@ +import {join} from "path"; +import {describeSpecTest} from "@chainsafe/eth2.0-spec-test-util"; +import bls from "../../src"; +import {G2point} from "../../src/helpers/g2point"; +import {BLSPubkey} from "../../src/types"; + +describeSpecTest( + join(__dirname, "./spec-tests/tests/bls/aggregate_sigs/aggregate_sigs.yaml"), + bls.aggregateSignatures, + ({input}) => { + const pubKeys: BLSPubkey[] = []; + input.forEach((pubKey: string) => { + pubKeys.push(Buffer.from(pubKey.replace('0x', ''), 'hex')) + }); + return [ + pubKeys + ]; + }, + ({output}) => output, + (result) => `0x${result.toString('hex')}`, + () => false, +); diff --git a/tests/spec/g2_compressed.test.ts b/tests/spec/g2_compressed.test.ts new file mode 100644 index 0000000..025d9ae --- /dev/null +++ b/tests/spec/g2_compressed.test.ts @@ -0,0 +1,23 @@ +import {join} from "path"; +import {describeSpecTest} from "@chainsafe/eth2.0-spec-test-util"; +import {padLeft} from "../../src/helpers/utils"; +import {G2point} from "../../src/helpers/g2point"; + +describeSpecTest( + join(__dirname, "./spec-tests/tests/bls/msg_hash_g2_compressed/g2_compressed.yaml"), + G2point.hashToG2, + ({input}) => { + const domain = padLeft(Buffer.from(input.domain.replace('0x', ''), 'hex'), 8); + return [ + Buffer.from(input.message.replace('0x', ''), 'hex'), + domain + ]; + }, + ({output}) => { + const xReExpected = padLeft(Buffer.from(output[0].replace('0x', ''), 'hex'), 48); + const xImExpected = padLeft(Buffer.from(output[1].replace('0x', ''), 'hex'), 48); + return '0x' + Buffer.concat([xReExpected, xImExpected]).toString('hex') + }, + (result:G2point) => `0x${result.toBytesCompressed().toString('hex')}`, + () => false, +); diff --git a/tests/spec/g2_uncompressed.test.ts b/tests/spec/g2_uncompressed.test.ts new file mode 100644 index 0000000..12896f9 --- /dev/null +++ b/tests/spec/g2_uncompressed.test.ts @@ -0,0 +1,28 @@ +import {join} from "path"; +import {describeSpecTest} from "@chainsafe/eth2.0-spec-test-util"; +import {padLeft} from "../../src/helpers/utils"; +import {G2point} from "../../src/helpers/g2point"; + +describeSpecTest( + join(__dirname, "./spec-tests/tests/bls/msg_hash_g2_uncompressed/g2_uncompressed.yaml"), + G2point.hashToG2, + ({input}) => { + const domain = padLeft(Buffer.from(input.domain.replace('0x', ''), 'hex'), 8); + return [ + Buffer.from(input.message.replace('0x', ''), 'hex'), + domain + ]; + }, + ({output}) => { + return '0x' + G2point.fromUncompressedInput( + Buffer.from(output[0][0].replace('0x', ''), 'hex'), + Buffer.from(output[0][1].replace('0x', ''), 'hex'), + Buffer.from(output[1][0].replace('0x', ''), 'hex'), + Buffer.from(output[1][1].replace('0x', ''), 'hex'), + Buffer.from(output[2][0].replace('0x', ''), 'hex'), + Buffer.from(output[2][1].replace('0x', ''), 'hex'), + ).toBytesCompressed().toString('hex'); + }, + (result:G2point) => `0x${result.toBytesCompressed().toString('hex')}`, + () => false, +); diff --git a/tests/spec/priv_to_public.test.ts b/tests/spec/priv_to_public.test.ts new file mode 100644 index 0000000..d193d0a --- /dev/null +++ b/tests/spec/priv_to_public.test.ts @@ -0,0 +1,14 @@ +import {join} from "path"; +import {describeSpecTest} from "@chainsafe/eth2.0-spec-test-util"; +import bls from "../../src"; + +describeSpecTest( + join(__dirname, "./spec-tests/tests/bls/priv_to_pub/priv_to_pub.yaml"), + bls.generatePublicKey, + ({input}) => { + return [Buffer.from(input.replace('0x', ''), 'hex')]; + }, + ({output}) => output, + (result) => `0x${result.toString('hex')}`, + () => false, +); diff --git a/tests/spec/sign_message.test.ts b/tests/spec/sign_message.test.ts new file mode 100644 index 0000000..446a6c4 --- /dev/null +++ b/tests/spec/sign_message.test.ts @@ -0,0 +1,20 @@ +import {join} from "path"; +import {describeSpecTest} from "@chainsafe/eth2.0-spec-test-util"; +import bls from "../../src"; +import {padLeft} from "../../src/helpers/utils"; + +describeSpecTest( + join(__dirname, "./spec-tests/tests/bls/sign_msg/sign_msg.yaml"), + bls.sign, + ({input}) => { + const domain = padLeft(Buffer.from(input.domain.replace('0x', ''), 'hex'), 8); + return [ + Buffer.from(input.privkey.replace('0x', ''), 'hex'), + Buffer.from(input.message.replace('0x', ''), 'hex'), + domain + ]; + }, + ({output}) => output, + (result) => `0x${result.toString('hex')}`, + () => false, +); diff --git a/tests/spec/spec-tests b/tests/spec/spec-tests new file mode 160000 index 0000000..7567342 --- /dev/null +++ b/tests/spec/spec-tests @@ -0,0 +1 @@ +Subproject commit 7567342c966c4e020f6ab3889f93cedb65ea9bfe diff --git a/tests/unit/helpers/g1point.test.ts b/tests/unit/helpers/g1point.test.ts new file mode 100644 index 0000000..2ef321f --- /dev/null +++ b/tests/unit/helpers/g1point.test.ts @@ -0,0 +1,109 @@ +import {G1point} from "../../../src/helpers/g1point"; +import {expect} from "chai"; + +describe('g1point', function() { + + it('should generate different random point', () => { + const g1 = G1point.random(); + const g2 = G1point.random(); + expect(g1.equal(g2)).to.be.false; + }); + + it('should be same', () => { + const g1 = G1point.random(); + expect(g1.equal(g1)).to.be.true; + }); + + it('serialize adn deserialize should produce same result', () => { + const g1 = G1point.random(); + const g2 = G1point.fromBytesCompressed(g1.toBytesCompressed()); + expect(g1.equal(g2)).to.be.true; + }); + + it('deserialize correct point doesn not throw', () => { + expect(() => { + G1point.fromBytesCompressed( + Buffer.from( + '8123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef', + 'hex' + ) + ) + }).to.not.throw; + }); + + it('deserialize incorrect point throws', () => { + expect(() => { + G1point.fromBytesCompressed( + Buffer.from( + '8123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcde0', + 'hex' + ) + ) + }).to.throw('X coordinate is not on the curve.'); + }); + + it('deserialize incorrect point throws 2', () => { + expect(() => { + G1point.fromBytesCompressed( + Buffer.from( + '9a0111ea397fe69a4b1ba7b6434bacd764774b84f38512bf6730d2a0f6b0f6241eabfffeb153ffffb9feffffffffaaab', + 'hex' + ) + ) + }).to.throw('X coordinate is too large.'); + }); + + it('deserialize incorrect point throws 3', () => { + expect(() => { + G1point.fromBytesCompressed( + Buffer.from( + '9a0111ea397fe69a4b1ba7b6434bacd764774b84f38512bf6730d2a0f6b0f6241eabfffeb153ffffb9feffffffffaaac', + 'hex' + ) + ) + }).to.throw('X coordinate is too large.'); + }); + + it('deserialize incorrect point throws to few bytes', () => { + expect(() => { + G1point.fromBytesCompressed( + Buffer.from( + '9a0111ea397fe69a4b1ba7b6434bacd764774b84f38512bf6730d2a0f6b0f6241eabfffeb153ffffb9feffffffffaa', + 'hex' + ) + ) + }).to.throw('Expected g1 compressed input to have 48 bytes'); + }); + + it('deserialize incorrect point throws to many bytes', () => { + expect(() => { + G1point.fromBytesCompressed( + Buffer.from( + '9a0111ea397fe69a4b1ba7b6434bacd764774b84f38512bf6730d2a0f6b0f6241eabfffeb153ffffb9feffffffffaaa900', + 'hex' + ) + ) + }).to.throw('Expected g1 compressed input to have 48 bytes'); + }); + + it('deserialize infinity', () => { + const g1 = G1point.fromBytesCompressed( + Buffer.from( + 'c00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000', + 'hex' + ) + ); + expect(g1.getPoint().is_infinity()).to.be.true + }); + + it('wrong infinity serialization', () => { + expect(() => { + G1point.fromBytesCompressed( + Buffer.from( + 'e00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000', + 'hex' + ) + ) + }).to.throw('The serialised input has B flag set, but A flag is set, or X is non-zero.'); + }); +}); diff --git a/tests/unit/helpers/g2point.test.ts b/tests/unit/helpers/g2point.test.ts new file mode 100644 index 0000000..94159af --- /dev/null +++ b/tests/unit/helpers/g2point.test.ts @@ -0,0 +1,153 @@ +import {G2point} from "../../../src/helpers/g2point"; +import {expect} from "chai"; + +describe('g2point', function() { + + it('should be equals', () => { + const g2 = G2point.random(); + expect(g2.equal(g2)).to.be.true; + }); + + it('should not be equals', () => { + const g2 = G2point.random(); + const g22 = G2point.random(); + expect(g2.equal(g22)).to.be.false; + }); + + it('serialize deserialize should be equal', () => { + const g2 = G2point.random(); + expect(G2point.fromCompressedBytes(g2.toBytesCompressed()).equal(g2)).to.be.true; + }); + + it('should deserialize from compress', () => { + const x = + "8123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef" + + "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef"; + expect(() => { + G2point.fromCompressedBytes( + Buffer.from( + x, + 'hex' + ) + ) + }).to.not.throw; + }); + + it('should fail to deserialize', () => { + const x = + "800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000" + + "1a0111ea397fe69a4b1ba7b6434bacd764774b84f38512bf6730d2a0f6b0f6241eabfffeb153ffffb9feffffffffaaab"; + expect(() => { + G2point.fromCompressedBytes( + Buffer.from( + x, + 'hex' + ) + ) + }).to.throw('The deserialised X real or imaginary coordinate is too large.'); + }); + + it('should fail to deserialize 2', () => { + const x = + "9a0111ea397fe69a4b1ba7b6434bacd764774b84f38512bf6730d2a0f6b0f6241eabfffeb153ffffb9feffffffffaaab" + + "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"; + expect(() => { + G2point.fromCompressedBytes( + Buffer.from( + x, + 'hex' + ) + ) + }).to.throw('The deserialised X real or imaginary coordinate is too large.'); + }); + + it('should fail to deserialize 3', () => { + const x = + "800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000" + + "1a0111ea397fe69a4b1ba7b6434bacd764774b84f38512bf6730d2a0f6b0f6241eabfffeb153ffffb9feffffffffaaac"; + expect(() => { + G2point.fromCompressedBytes( + Buffer.from( + x, + 'hex' + ) + ) + }).to.throw('The deserialised X real or imaginary coordinate is too large.'); + }); + + it('should fail to deserialize 4', () => { + const x = + "9a0111ea397fe69a4b1ba7b6434bacd764774b84f38512bf6730d2a0f6b0f6241eabfffeb153ffffb9feffffffffaaac" + + "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"; + expect(() => { + G2point.fromCompressedBytes( + Buffer.from( + x, + 'hex' + ) + ) + }).to.throw('The deserialised X real or imaginary coordinate is too large.'); + }); + + it('should fail to deserialize 5', () => { + const x = + "8123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef" + + "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcde0"; + expect(() => { + G2point.fromCompressedBytes( + Buffer.from( + x, + 'hex' + ) + ) + }).to.throw('X coordinate is not on the curve.'); + }); + + it('should fail to deserialize infinity', () => { + const x = + "800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000" + + "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"; + expect(() => { + G2point.fromCompressedBytes( + Buffer.from( + x, + 'hex' + ) + ) + }).to.throw('X coordinate is not on the curve.'); + }); + + it('should fail to deserialize - too few bytes', () => { + const x = "8123456789abcd"; + expect(() => { + G2point.fromCompressedBytes( + Buffer.from( + x, + 'hex' + ) + ) + }).to.throw('Expected signature of 96 bytes'); + }); + + it('should fail to deserialize - too many bytes', () => { + expect(() => { + G2point.fromCompressedBytes( + Buffer.alloc(100, 1), + ) + }).to.throw('Expected signature of 96 bytes'); + }); + + it('should deserialize infinity', () => { + const x = + "c00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000" + + "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"; + const g2 = G2point.fromCompressedBytes( + Buffer.from( + x, + 'hex' + ) + ); + expect(g2.getPoint().is_infinity()).to.be.true; + }) + +}); diff --git a/tests/unit/helpers/utils.test.ts b/tests/unit/helpers/utils.test.ts new file mode 100644 index 0000000..51e6f67 --- /dev/null +++ b/tests/unit/helpers/utils.test.ts @@ -0,0 +1,27 @@ +import {expect} from "chai"; +import {padLeft} from "../../../src/helpers/utils"; +import {G1point} from "../../../src/helpers/g1point"; + +describe('helpers tests', function() { + + describe('padLeft', function() { + + it('throw if source larger than target', () => { + expect( + () => padLeft(Buffer.alloc(2, 0), 1) + ).to.throw; + }); + + it('pad one 0 on left side', () => { + const result = padLeft( + Buffer.alloc(1, 1), + 2 + ); + expect(result.length).to.be.equal(2); + expect(result[0]).to.be.equal(0); + expect(result[1]).to.be.equal(1); + }); + + }); + +}); diff --git a/tests/unit/index.test.ts b/tests/unit/index.test.ts new file mode 100644 index 0000000..a8416e4 --- /dev/null +++ b/tests/unit/index.test.ts @@ -0,0 +1,313 @@ +import bls from "../../src"; +import {Keypair} from "../../src/keypair"; +import { sha256 } from 'js-sha256'; +import {G2point} from "../../src/helpers/g2point"; +import {expect} from "chai"; + +describe('test bls', function () { + + describe('aggregate pubkey', function () { + it('should aggregate empty array', function () { + expect(bls.aggregatePubkeys([])).to.not.throw; + }); + }); + + describe('verify', function() { + it('should verify signature', () => { + const keypair = Keypair.generate(); + const messageHash = Buffer.from(sha256.arrayBuffer("Test")); + const domain = Buffer.alloc(8, 1); + const signature = keypair.privateKey.sign( + G2point.hashToG2(messageHash, domain) + ); + const result = bls.verify( + keypair.publicKey.toBytesCompressed(), + messageHash, + signature.toBytesCompressed(), + domain + ); + expect(result).to.be.true; + }); + + + it('should not modify original pubkey when verifying', () => { + const keypair = Keypair.generate(); + const messageHash = Buffer.from(sha256.arrayBuffer("Test")); + const domain = Buffer.alloc(8, 1); + const signature = keypair.privateKey.sign( + G2point.hashToG2(messageHash, domain) + ); + const pubKey = keypair.publicKey.toBytesCompressed(); + bls.verify( + pubKey, + messageHash, + signature.toBytesCompressed(), + domain + ); + expect('0x' + pubKey.toString('hex')).to.be.equal(keypair.publicKey.toHexString()); + }); + + + it('should fail verify empty signature', () => { + const keypair = Keypair.generate(); + const messageHash2 = Buffer.from(sha256.arrayBuffer("Test message2")); + const domain = Buffer.from("01", 'hex'); + const signature = Buffer.alloc(96); + const result = bls.verify( + keypair.publicKey.toBytesCompressed(), + messageHash2, + signature, + domain + ); + expect(result).to.be.false; + }); + + it('should fail verify signature of different message', () => { + const keypair = Keypair.generate(); + const messageHash = Buffer.from(sha256.arrayBuffer("Test message")); + const messageHash2 = Buffer.from(sha256.arrayBuffer("Test message2")) + const domain = Buffer.from("01", 'hex'); + const signature = keypair.privateKey.sign( + G2point.hashToG2(messageHash, domain) + ); + const result = bls.verify( + keypair.publicKey.toBytesCompressed(), + messageHash2, + signature.toBytesCompressed(), + domain + ); + expect(result).to.be.false; + }); + + it('should fail verify signature of different domain', () => { + const keypair = Keypair.generate(); + const messageHash = Buffer.from(sha256.arrayBuffer("Test message")); + const domain = Buffer.from("01", 'hex'); + const domain2 = Buffer.from("02", 'hex'); + const signature = keypair.privateKey.sign( + G2point.hashToG2(messageHash, domain) + ); + const result = bls.verify( + keypair.publicKey.toBytesCompressed(), + messageHash, + signature.toBytesCompressed(), + domain2 + ); + expect(result).to.be.false; + }); + + it('should fail verify signature signed by different key', () => { + const keypair = Keypair.generate(); + const keypair2 = Keypair.generate(); + const messageHash = Buffer.from(sha256.arrayBuffer("Test message")); + const domain = Buffer.from("01", 'hex'); + const signature = keypair.privateKey.sign( + G2point.hashToG2(messageHash, domain) + ); + const result = bls.verify( + keypair2.publicKey.toBytesCompressed(), + messageHash, + signature.toBytesCompressed(), + domain + ); + expect(result).to.be.false; + }); + }); + + describe('verify multiple', function() { + + it('should verify aggregated signatures', function () { + this.timeout(5000) + + + const domain = Buffer.alloc(8, 0); + + const keypair1 = Keypair.generate(); + const keypair2 = Keypair.generate(); + const keypair3 = Keypair.generate(); + const keypair4 = Keypair.generate(); + + const message1 = Buffer.from("Test1", 'utf-8'); + const message2 = Buffer.from("Test2", 'utf-8'); + + const signature1 = keypair1.privateKey.signMessage(message1, domain); + const signature2 = keypair2.privateKey.signMessage(message1, domain); + const signature3 = keypair3.privateKey.signMessage(message2, domain); + const signature4 = keypair4.privateKey.signMessage(message2, domain); + + const aggregatePubKey12 = bls.aggregatePubkeys([ + keypair1.publicKey.toBytesCompressed(), + keypair2.publicKey.toBytesCompressed(), + ]); + + const aggregatePubKey34 = bls.aggregatePubkeys([ + keypair3.publicKey.toBytesCompressed(), + keypair4.publicKey.toBytesCompressed(), + ]); + + const aggregateSignature = bls.aggregateSignatures([ + signature1.toBytesCompressed(), + signature2.toBytesCompressed(), + signature3.toBytesCompressed(), + signature4.toBytesCompressed(), + ]); + + const result = bls.verifyMultiple( + [aggregatePubKey12, aggregatePubKey34], + [message1, message2], + aggregateSignature, + domain + ); + + expect(result).to.be.true; + }); + + it('should fail to verify aggregated signatures - swapped messages', function () { + this.timeout(5000) + + const domain = Buffer.alloc(8, 0); + + const keypair1 = Keypair.generate(); + const keypair2 = Keypair.generate(); + const keypair3 = Keypair.generate(); + const keypair4 = Keypair.generate(); + + const message1 = Buffer.from("Test1", 'utf-8'); + const message2 = Buffer.from("Test2", 'utf-8'); + + const signature1 = keypair1.privateKey.signMessage(message1, domain); + const signature2 = keypair2.privateKey.signMessage(message1, domain); + const signature3 = keypair3.privateKey.signMessage(message2, domain); + const signature4 = keypair4.privateKey.signMessage(message2, domain); + + const aggregatePubKey12 = bls.aggregatePubkeys([ + keypair1.publicKey.toBytesCompressed(), + keypair2.publicKey.toBytesCompressed(), + ]); + + const aggregatePubKey34 = bls.aggregatePubkeys([ + keypair3.publicKey.toBytesCompressed(), + keypair4.publicKey.toBytesCompressed(), + ]); + + const aggregateSignature = bls.aggregateSignatures([ + signature1.toBytesCompressed(), + signature2.toBytesCompressed(), + signature3.toBytesCompressed(), + signature4.toBytesCompressed(), + ]); + + const result = bls.verifyMultiple( + [aggregatePubKey12, aggregatePubKey34], + [message2, message1], + aggregateSignature, + domain + ); + + expect(result).to.be.false; + }); + + it('should fail to verify aggregated signatures - different pubkeys and messsages', () => { + + const domain = Buffer.alloc(8, 0); + + const keypair1 = Keypair.generate(); + const keypair2 = Keypair.generate(); + const keypair3 = Keypair.generate(); + const keypair4 = Keypair.generate(); + + const message1 = Buffer.from("Test1", 'utf-8'); + const message2 = Buffer.from("Test2", 'utf-8'); + + const signature1 = keypair1.privateKey.signMessage(message1, domain); + const signature2 = keypair2.privateKey.signMessage(message1, domain); + const signature3 = keypair3.privateKey.signMessage(message2, domain); + const signature4 = keypair4.privateKey.signMessage(message2, domain); + + const aggregatePubKey12 = bls.aggregatePubkeys([ + keypair1.publicKey.toBytesCompressed(), + keypair2.publicKey.toBytesCompressed(), + ]); + + + const aggregateSignature = bls.aggregateSignatures([ + signature1.toBytesCompressed(), + signature2.toBytesCompressed(), + signature3.toBytesCompressed(), + signature4.toBytesCompressed(), + ]); + + const result = bls.verifyMultiple( + [aggregatePubKey12], + [message2, message1], + aggregateSignature, + domain + ); + + expect(result).to.be.false; + }); + + it('should fail to verify aggregated signatures - different domain', () => { + + const domain = Buffer.alloc(8, 0); + const domain2 = Buffer.alloc(8, 1); + + const keypair1 = Keypair.generate(); + const keypair2 = Keypair.generate(); + const keypair3 = Keypair.generate(); + const keypair4 = Keypair.generate(); + + const message1 = Buffer.from("Test1", 'utf-8'); + const message2 = Buffer.from("Test2", 'utf-8'); + + const signature1 = keypair1.privateKey.signMessage(message1, domain); + const signature2 = keypair2.privateKey.signMessage(message1, domain); + const signature3 = keypair3.privateKey.signMessage(message2, domain2); + const signature4 = keypair4.privateKey.signMessage(message2, domain2); + + const aggregatePubKey12 = bls.aggregatePubkeys([ + keypair1.publicKey.toBytesCompressed(), + keypair2.publicKey.toBytesCompressed(), + ]); + + + const aggregateSignature = bls.aggregateSignatures([ + signature1.toBytesCompressed(), + signature2.toBytesCompressed(), + signature3.toBytesCompressed(), + signature4.toBytesCompressed(), + ]); + + const result = bls.verifyMultiple( + [aggregatePubKey12], + [message2, message1], + aggregateSignature, + domain + ); + + expect(result).to.be.false; + }); + + + it('should fail to verify aggregated signatures - no public keys', () => { + + const domain = Buffer.alloc(8, 0); + + const signature = Buffer.alloc(96); + + const message1 = Buffer.from("Test1", 'utf-8'); + const message2 = Buffer.from("Test2", 'utf-8'); + + const result = bls.verifyMultiple( + [], + [message2, message1], + signature, + domain + ); + + expect(result).to.be.false; + }); + + }); + +}); diff --git a/tests/unit/keypair.test.ts b/tests/unit/keypair.test.ts new file mode 100644 index 0000000..1b5db88 --- /dev/null +++ b/tests/unit/keypair.test.ts @@ -0,0 +1,25 @@ +import {PrivateKey} from "../../src/privateKey"; +import {PublicKey} from "../../src/publicKey"; +import {Keypair} from "../../src/keypair"; +import {expect} from "chai"; + +describe('keypair', function() { + + it('should create from private and public key', () => { + const secret = PrivateKey.random(); + const secret2 = PrivateKey.random(); + const publicKey = PublicKey.fromBytes(PublicKey.fromPrivateKey(secret2).toBytesCompressed()); + const keypair = new Keypair(secret, publicKey); + expect(keypair.publicKey).to.be.equal(publicKey); + expect(keypair.privateKey).to.be.equal(secret); + expect(keypair.privateKey).to.not.be.equal(secret2); + }); + + it('should create from private', () => { + const secret = PrivateKey.random(); + const publicKey = PublicKey.fromPrivateKey(secret); + const keypair = new Keypair(secret); + expect(keypair.publicKey.toBytesCompressed().toString('hex')) + .to.be.equal(publicKey.toBytesCompressed().toString('hex')); + }) +}); diff --git a/tests/unit/privateKey.test.ts b/tests/unit/privateKey.test.ts new file mode 100644 index 0000000..670b89d --- /dev/null +++ b/tests/unit/privateKey.test.ts @@ -0,0 +1,22 @@ +import {PrivateKey} from "../../src/privateKey"; +import {expect} from "chai"; +import {SECRET_KEY_LENGTH} from "../../src/constants"; + +describe('privateKey', function() { + + it('should generate random private key', function () { + const privateKey1 = PrivateKey.random(); + const privateKey2 = PrivateKey.random(); + expect(privateKey1).to.not.be.equal(privateKey2); + }); + + it('should export private key to hex string', function () { + const privateKey = '0x9a88071ff0634f6515c7699c97d069dc4b2fa28455f6b457e92d1c1302f0c6bb'; + expect(PrivateKey.fromHexString(privateKey).toHexString()).to.be.equal(privateKey); + }); + + it('should export private key to bytes', function () { + expect(PrivateKey.random().toBytes().length).to.be.equal(SECRET_KEY_LENGTH); + }); + +}); diff --git a/tsconfig.json b/tsconfig.json new file mode 100644 index 0000000..89c479b --- /dev/null +++ b/tsconfig.json @@ -0,0 +1,64 @@ +{ + "compilerOptions": { + /* Basic Options */ + "target": "es5", /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017','ES2018' or 'ESNEXT'. */ + "module": "commonjs", /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */ + //"lib": ["esnext"], /* Specify library files to be included in the compilation. */ + // "allowJs": true, /* Allow javascript files to be compiled. */ + // "checkJs": true, /* Report errors in .js files. */ + // "jsx": "preserve", /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */ + "declaration": true, /* Generates corresponding '.d.ts' file. */ + // "declarationMap": true, /* Generates a sourcemap for each corresponding '.d.ts' file. */ + // "sourceMap": true, /* Generates corresponding '.map' file. */ + // "outFile": "./", /* Concatenate and emit output to single file. */ + "outDir": "lib", /* Redirect output structure to the directory. */ + "rootDir": "./src", /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */ + // "composite": true, /* Enable project compilation */ + // "removeComments": true, /* Do not emit comments to output. */ + // "noEmit": true, /* Do not emit outputs. */ + // "importHelpers": true, /* Import emit helpers from 'tslib'. */ + // "downlevelIteration": true, /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */ + // "isolatedModules": true, /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */ + + /* Strict Type-Checking Options */ + "strict": true, /* Enable all strict type-checking options. */ + // "noImplicitAny": true, /* Raise error on expressions and declarations with an implied 'any' type. */ + // "strictNullChecks": true, /* Enable strict null checks. */ + // "strictFunctionTypes": true, /* Enable strict checking of function types. */ + // "strictBindCallApply": true, /* Enable strict 'bind', 'call', and 'apply' methods on functions. */ + // "strictPropertyInitialization": true, /* Enable strict checking of property initialization in classes. */ + // "noImplicitThis": true, /* Raise error on 'this' expressions with an implied 'any' type. */ + // "alwaysStrict": true, /* Parse in strict mode and emit "use strict" for each source file. */ + + /* Additional Checks */ + // "noUnusedLocals": true, /* Report errors on unused locals. */ + // "noUnusedParameters": true, /* Report errors on unused parameters. */ + // "noImplicitReturns": true, /* Report error when not all code paths in function return a value. */ + // "noFallthroughCasesInSwitch": true, /* Report errors for fallthrough cases in switch statement. */ + + /* Module Resolution Options */ + // "moduleResolution": "node", /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */ + "baseUrl": "bls-js/", /* Base directory to resolve non-absolute module names. */ + // "paths": {}, /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */ /* List of root folders whose combined content represents the structure of the project at runtime. */ + // "typeRoots": ["./node_modules/@types"], + // "allowSyntheticDefaultImports": true, /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */ + "esModuleInterop": true /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */ + // "preserveSymlinks": true, /* Do not resolve the real path of symlinks. */ + + /* Source Map Options */ + // "sourceRoot": "", /* Specify the location where debugger should locate TypeScript files instead of source locations. */ + // "mapRoot": "", /* Specify the location where debugger should locate map files instead of generated locations. */ + // "inlineSourceMap": true, /* Emit a single file with source maps instead of having a separate file. */ + // "inlineSources": true, /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */ + + /* Experimental Options */ + // "experimentalDecorators": true, /* Enables experimental support for ES7 decorators. */ + // "emitDecoratorMetadata": true, /* Enables experimental support for emitting type metadata for decorators. */ + }, + "include": [ + "src/**/*" + ], + "exclude":[ + "node_modules" + ] +}