diff --git a/.github/workflows/main_ci.yml b/.github/workflows/main_ci.yml new file mode 100644 index 0000000..62a94c7 --- /dev/null +++ b/.github/workflows/main_ci.yml @@ -0,0 +1,69 @@ +name: Run Tests + +on: + push: + branches: [ master ] + pull_request: + branches: [ master ] + +jobs: + unit: + runs-on: ubuntu-latest + steps: + - uses: actions/checkout@v2 + - uses: actions/setup-node@v1 + with: + node-version: 16 + registry-url: https://registry.npmjs.org/ + - run: npm ci + - run: npm run unit + coverage: + runs-on: ubuntu-latest + steps: + - uses: actions/checkout@v2 + - uses: actions/setup-node@v1 + with: + node-version: 16 + registry-url: https://registry.npmjs.org/ + - run: npm ci + - run: npm run coverage + format: + runs-on: ubuntu-latest + steps: + - uses: actions/checkout@v2 + - uses: actions/setup-node@v1 + with: + node-version: 16 + registry-url: https://registry.npmjs.org/ + - run: npm ci + - run: npm run format:ci + gitdiff: + runs-on: ubuntu-latest + steps: + - uses: actions/checkout@v2 + - uses: actions/setup-node@v1 + with: + node-version: 16 + registry-url: https://registry.npmjs.org/ + - run: npm ci + - run: npm run gitdiff:ci + lint: + runs-on: ubuntu-latest + steps: + - uses: actions/checkout@v2 + - uses: actions/setup-node@v1 + with: + node-version: 16 + registry-url: https://registry.npmjs.org/ + - run: npm ci + - run: npm run lint + lint-tests: + runs-on: ubuntu-latest + steps: + - uses: actions/checkout@v2 + - uses: actions/setup-node@v1 + with: + node-version: 16 + registry-url: https://registry.npmjs.org/ + - run: npm ci + - run: npm run lint:tests diff --git a/.prettierrc.json b/.prettierrc.json new file mode 100644 index 0000000..a20502b --- /dev/null +++ b/.prettierrc.json @@ -0,0 +1,4 @@ +{ + "singleQuote": true, + "trailingComma": "all" +} diff --git a/.travis.yml b/.travis.yml deleted file mode 100644 index 2a29287..0000000 --- a/.travis.yml +++ /dev/null @@ -1,19 +0,0 @@ -sudo: false -os: linux -language: node_js -node_js: - - "8" - - "9" - - "lts/*" -env: - matrix: - - TEST_SUITE=unit -matrix: - include: - - os: linux - node_js: "lts/*" - env: TEST_SUITE=coverage - - os: linux - node_js: "lts/*" - env: TEST_SUITE=standard -script: npm run $TEST_SUITE diff --git a/CHANGELOG.md b/CHANGELOG.md index e7c0110..85e54a3 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -1,3 +1,8 @@ +# 2.2.1 + __changed__ + - Migrated lib to TypeScript + - Upgrade dependecies to latest version + # 2.2.0 __added__ - Signer and SignerAsync interfaces diff --git a/README.md b/README.md index ab9b03b..0b57c5c 100644 --- a/README.md +++ b/README.md @@ -1,6 +1,6 @@ # bitcoinjs-message [![NPM Package](https://img.shields.io/npm/v/bitcoinjs-message.svg?style=flat-square)](https://www.npmjs.org/package/bitcoinjs-message) -[![Build Status](https://img.shields.io/travis/bitcoinjs/bitcoinjs-message.svg?branch=master&style=flat-square)](https://travis-ci.org/bitcoinjs/bitcoinjs-message) +[![Github CI](https://github.com/bitcoinjs/bitcoinjs-message/actions/workflows/main_ci.yml/badge.svg)](https://github.com/bitcoinjs/bitcoinjs-message/actions/workflows/main_ci.yml) [![Dependency status](https://img.shields.io/david/bitcoinjs/bitcoinjs-message.svg?style=flat-square)](https://david-dm.org/bitcoinjs/bitcoinjs-message#info=dependencies) [![js-standard-style](https://cdn.rawgit.com/feross/standard/master/badge.svg)](https://github.com/feross/standard) @@ -8,8 +8,11 @@ ## Examples (Note about Electrum support at the bottom) ``` javascript -var bitcoin = require('bitcoinjs-lib') // v4.x.x -var bitcoinMessage = require('bitcoinjs-message') +import * as bitcoinjs from 'bitcoinjs-lib'; // v6.x.x +import * as message from 'bitcoinjs-message'; +import ECPairFactory from 'ecpair'; +import * as secp256k1 from 'secp256k1'; // v4.x.x +import * as tinySecp256k1 from 'tiny-secp256k1'; ``` > sign(message, privateKey, compressed[, network.messagePrefix, sigOptions]) @@ -20,7 +23,8 @@ var bitcoinMessage = require('bitcoinjs-message') Sign a Bitcoin message ``` javascript -var keyPair = bitcoin.ECPair.fromWIF('L4rK1yDtCWekvXuE6oXD9jCYfFNV2cWRpVuPLBcCU2z8TrisoyY1') +const ECPair = ECPairFactory(tinySecp256k1); +var keyPair = ECPair.fromWIF('L4rK1yDtCWekvXuE6oXD9jCYfFNV2cWRpVuPLBcCU2z8TrisoyY1') var privateKey = keyPair.privateKey var message = 'This is an example of a signed message.' @@ -32,7 +36,8 @@ console.log(signature.toString('base64')) To produce non-deterministic signatures you can pass an extra option to sign() ``` javascript var { randomBytes } = require('crypto') -var keyPair = bitcoin.ECPair.fromWIF('L4rK1yDtCWekvXuE6oXD9jCYfFNV2cWRpVuPLBcCU2z8TrisoyY1') +const ECPair = ECPairFactory(tinySecp256k1); +var keyPair = ECPair.fromWIF('L4rK1yDtCWekvXuE6oXD9jCYfFNV2cWRpVuPLBcCU2z8TrisoyY1') var privateKey = keyPair.privateKey var message = 'This is an example of a signed message.' @@ -56,13 +61,13 @@ console.log(signature.toString('base64')) Sign a Bitcoin message using a Signer interface. ``` javascript -var keyPair = bitcoin.ECPair.fromWIF('L4rK1yDtCWekvXuE6oXD9jCYfFNV2cWRpVuPLBcCU2z8TrisoyY1') +const ECPair = ECPairFactory(tinySecp256k1); +var keyPair = ECPair.fromWIF('L4rK1yDtCWekvXuE6oXD9jCYfFNV2cWRpVuPLBcCU2z8TrisoyY1') var privateKey = keyPair.privateKey var message = 'This is an example of a signed message.' -var secp256k1 = require('secp256k1') // Notice we are using the privateKey var from the outer scope inside the sign function. -var signer = { sign: (hash, extraData) => secp256k1.sign(hash, privateKey, { data: extraData }) } +var signer = { sign: (hash, extraData) => secp256k1.ecdsaSign(hash, privateKey, { data: extraData }) } var signature = bitcoinMessage.sign(message, signer, keyPair.compressed) console.log(signature.toString('base64')) @@ -74,7 +79,8 @@ console.log(signature.toString('base64')) Sign a Bitcoin message asynchronously ``` javascript -var keyPair = bitcoin.ECPair.fromWIF('L4rK1yDtCWekvXuE6oXD9jCYfFNV2cWRpVuPLBcCU2z8TrisoyY1') +const ECPair = ECPairFactory(tinySecp256k1); +var keyPair = ECPair.fromWIF('L4rK1yDtCWekvXuE6oXD9jCYfFNV2cWRpVuPLBcCU2z8TrisoyY1') var privateKey = keyPair.privateKey var message = 'This is an example of a signed message.' @@ -86,14 +92,14 @@ bitcoinMessage.signAsync(message, privateKey, keyPair.compressed).then(signature Sign a Bitcoin message asynchronously using SignerAsync interface ``` javascript -var keyPair = bitcoin.ECPair.fromWIF('L4rK1yDtCWekvXuE6oXD9jCYfFNV2cWRpVuPLBcCU2z8TrisoyY1') +const ECPair = ECPairFactory(tinySecp256k1); +var keyPair = ECPair.fromWIF('L4rK1yDtCWekvXuE6oXD9jCYfFNV2cWRpVuPLBcCU2z8TrisoyY1') var privateKey = keyPair.privateKey var message = 'This is an example of a signed message.' -var secp256k1 = require('secp256k1') // Note that a Signer will also work -var signerAsync = { sign: (hash, extraData) => Promise.resolve(secp256k1.sign(hash, privateKey, { data: extraData })) } 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bc1e4e9..7970d4f 100644 --- a/package.json +++ b/package.json @@ -1,7 +1,12 @@ { "name": "bitcoinjs-message", - "version": "2.2.0", + "version": "2.2.1", "description": "bitcoinjs-message", + "main": "./src/index.js", + "types": "./src/index.d.ts", + "engines": { + "node": ">=8.0.0" + }, "keywords": [ "bitcoinjs-message", "bitcoin" @@ -15,35 +20,58 @@ "index.js", "index.d.ts" ], - "main": "./index.js", - "types": "./index.d.ts", "repository": { "type": "git", "url": "https://github.com/bitcoinjs/bitcoinjs-message.git" }, "scripts": { - "coverage": "nyc tape test/*.js", - "prepublish": "npm run test", - "standard": "standard", - "test": "npm run standard && npm run unit", - "unit": "tape test/*.js" + "build": "npm run clean && tsc -p ./tsconfig.json && npm run formatjs", + "build:tests": "npm run clean:jstests && tsc -p ./test/tsconfig.json", + "clean": "rimraf src", + "clean:jstests": "rimraf 'test/**/!(ts-node-register)*.js'", + "coverage-report": "npm run build && npm run nobuild:coverage-report", + "coverage-html": "npm run build && npm run nobuild:coverage-html", + "coverage": "npm run build && npm run nobuild:coverage", + "format": "npm run prettier -- --write", + "formatjs": "npm run prettierjs -- --write", + "format:ci": "npm run prettier -- --check && npm run prettierjs -- --check", + "gitdiff:ci": "npm run build && git diff --exit-code", + "lint": "tslint -p tsconfig.json -c tslint.json", + "lint:tests": "tslint -p test/tsconfig.json -c tslint.json", + "mocha:ts": "mocha --recursive --require test/ts-node-register", + "nobuild:coverage-report": "nyc report --reporter=lcov", + "nobuild:coverage-html": "nyc report --reporter=html", + "nobuild:coverage": "npm run build:tests && nyc --check-coverage --branches 90 --functions 90 --lines 90 mocha && npm run clean:jstests", + "nobuild:unit": "npm run mocha:ts -- 'test/*.ts'", + "prettier": "prettier \"ts_src/**/*.ts\" \"test/**/*.ts\" --ignore-path ./.prettierignore", + "prettierjs": "prettier \"src/**/*.js\" --ignore-path ./.prettierignore", + "test": "npm run build && npm run format:ci && npm run lint && npm run nobuild:coverage", + "unit": "npm run build && npm run nobuild:unit" }, "dependencies": { - "bech32": "^1.1.3", + "bech32": "^2.0.0", "bs58check": "^2.1.2", - "buffer-equals": "^1.0.3", - "create-hash": "^1.1.2", - "secp256k1": "^3.0.1", - "varuint-bitcoin": "^1.0.1" + "create-hash": "^1.2.0", + "tiny-secp256k1": "^2.2.0", + "varuint-bitcoin": "^1.1.2" }, "devDependencies": { + "@types/bs58": "^4.0.0", + "@types/bs58check": "^2.1.0", + "@types/create-hash": "^1.2.2", + "@types/mocha": "^5.2.7", + "@types/node": "^17.0.0", + "@types/secp256k1": "^4.0.3", "bigi": "^1.4.1", - "bitcoinjs-lib": "^3.2.0", + "bitcoinjs-lib": "^6.0.1", + "ecpair": "^2.0.1", + "mocha": "^9.1.3", "nyc": "^14.1.1", + "prettier": "^2.5.1", "standard": "^12.0.1", - "tape": "^4.5.1" - }, - "engines": { - "node": ">=0.10" + "tape": "^4.5.1", + "ts-node": "^10.4.0", + "tslint": "^6.1.3", + "typescript": "^4.5.4" } } diff --git a/src/bitcoin-message.d.ts b/src/bitcoin-message.d.ts new file mode 100644 index 0000000..78e199c --- /dev/null +++ b/src/bitcoin-message.d.ts @@ -0,0 +1,10 @@ +/// +export interface SignOptions { + segwitType?: string; + extraEntropy?: Buffer; + messagePrefixArg?: string; +} +export declare function magicHash(message: Buffer | string, messagePrefix?: Buffer | string | null): Buffer; +export declare function sign(message: Buffer | string, privateKey: Buffer | any, compressed: boolean, messagePrefix?: SignOptions | Buffer | string, sigOptions?: SignOptions): Buffer; +export declare function signAsync(message: Buffer | string, privateKey: Buffer | any, compressed: boolean, messagePrefix: string, sigOptions?: SignOptions): Promise; +export declare function verify(message: Buffer | string, address: string, signature: Buffer | string, messagePrefix?: Buffer | string | null, checkSegwitAlways?: boolean): boolean; diff --git a/src/bitcoin-message.js b/src/bitcoin-message.js new file mode 100644 index 0000000..d07d37b --- /dev/null +++ b/src/bitcoin-message.js @@ -0,0 +1,197 @@ +'use strict'; +Object.defineProperty(exports, '__esModule', { value: true }); +exports.verify = exports.signAsync = exports.sign = exports.magicHash = void 0; +const bs58check = require('bs58check'); +const bech32_1 = require('bech32'); +const secp256k1 = require('tiny-secp256k1'); +const varuint = require('varuint-bitcoin'); +const crypto_1 = require('./crypto'); +const SEGWIT_TYPES = { + P2WPKH: 'p2wpkh', + P2SH_P2WPKH: 'p2sh(p2wpkh)', +}; +function encodeSignature(signature, recovery, compressed, segwitType) { + if (segwitType !== undefined) { + recovery += 8; + if (segwitType === SEGWIT_TYPES.P2WPKH) recovery += 4; + } else { + if (compressed) recovery += 4; + } + return Buffer.concat([Buffer.alloc(1, recovery + 27), signature]); +} +function decodeSignature(buffer) { + if (buffer.length !== 65) throw new Error('Invalid signature length'); + const flagByte = buffer.readUInt8(0) - 27; + if (flagByte > 15 || flagByte < 0) { + throw new Error('Invalid signature parameter'); + } + return { + compressed: !!(flagByte & 12), + segwitType: !(flagByte & 8) + ? null + : !(flagByte & 4) + ? SEGWIT_TYPES.P2SH_P2WPKH + : SEGWIT_TYPES.P2WPKH, + recovery: flagByte & 3, + signature: buffer.slice(1), + }; +} +function magicHash(message, messagePrefix) { + messagePrefix = messagePrefix || '\u0018Bitcoin Signed Message:\n'; + if (!Buffer.isBuffer(messagePrefix)) { + messagePrefix = Buffer.from(messagePrefix, 'utf8'); + } + if (!Buffer.isBuffer(message)) { + message = Buffer.from(message, 'utf8'); + } + const messageVISize = varuint.encodingLength(message.length); + const buffer = Buffer.allocUnsafe( + messagePrefix.length + messageVISize + message.length, + ); + messagePrefix.copy(buffer, 0); + varuint.encode(message.length, buffer, messagePrefix.length); + message.copy(buffer, messagePrefix.length + messageVISize); + return (0, crypto_1.hash256)(buffer); +} +exports.magicHash = magicHash; +function prepareSign(messagePrefixArg, sigOptions) { + if (typeof messagePrefixArg === 'object' && sigOptions === undefined) { + // @ts-ignore + sigOptions = messagePrefixArg; + messagePrefixArg = undefined; + } + let segwitType = (sigOptions || {}).segwitType; + const extraEntropy = sigOptions && sigOptions.extraEntropy; + if ( + segwitType && + (typeof segwitType === 'string' || segwitType instanceof String) + ) { + segwitType = segwitType.toLowerCase(); + } + if ( + segwitType && + segwitType !== SEGWIT_TYPES.P2SH_P2WPKH && + segwitType !== SEGWIT_TYPES.P2WPKH + ) { + throw new Error( + 'Unrecognized segwitType: use "' + + SEGWIT_TYPES.P2SH_P2WPKH + + '" or "' + + SEGWIT_TYPES.P2WPKH + + '"', + ); + } + return { + // @ts-ignore + messagePrefixArg, + segwitType, + extraEntropy, + }; +} +function isSigner(obj) { + return obj && typeof obj.sign === 'function'; +} +function sign(message, privateKey, compressed, messagePrefix, sigOptions) { + const { messagePrefixArg, segwitType, extraEntropy } = prepareSign( + messagePrefix, + sigOptions, + ); + const hash = magicHash(message, messagePrefixArg); + const sigObj = isSigner(privateKey) + ? privateKey.sign(hash, extraEntropy) + : secp256k1.signRecoverable(hash, privateKey, extraEntropy); + return encodeSignature( + Buffer.from(sigObj.signature), + sigObj.recoveryId, + compressed, + segwitType, + ); +} +exports.sign = sign; +function signAsync(message, privateKey, compressed, messagePrefix, sigOptions) { + let messagePrefixArg; + let extraEntropy; + let segwitType; + return Promise.resolve() + .then(() => { + ({ messagePrefixArg, segwitType, extraEntropy } = prepareSign( + messagePrefix, + sigOptions, + )); + const hash = magicHash(message, messagePrefixArg); + return isSigner(privateKey) + ? privateKey.sign(hash, extraEntropy) + : secp256k1.signRecoverable(hash, privateKey, extraEntropy); + }) + .then((sigObj) => { + return encodeSignature( + Buffer.from(sigObj.signature), + sigObj.recoveryId, + compressed, + segwitType, + ); + }); +} +exports.signAsync = signAsync; +function segwitRedeemHash(publicKeyHash) { + const redeemScript = Buffer.concat([ + Buffer.from('0014', 'hex'), + publicKeyHash, + ]); + return (0, crypto_1.hash160)(redeemScript); +} +function decodeBech32(address) { + const result = bech32_1.bech32.decode(address); + const data = bech32_1.bech32.fromWords(result.words.slice(1)); + return Buffer.from(data); +} +function verify(message, address, signature, messagePrefix, checkSegwitAlways) { + if (!Buffer.isBuffer(signature)) signature = Buffer.from(signature, 'base64'); + const parsed = decodeSignature(signature); + if (checkSegwitAlways && !parsed.compressed) { + throw new Error( + 'checkSegwitAlways can only be used with a compressed pubkey signature flagbyte', + ); + } + const hash = magicHash(message, messagePrefix); + const publicKey = secp256k1.recover( + hash, + parsed.signature, + parsed.recovery, + parsed.compressed, + ); + if (!publicKey) throw new Error('Public key is point at infinity!'); + const publicKeyHash = (0, crypto_1.hash160)(Buffer.from(publicKey)); + let actual; + let expected; + if (parsed.segwitType) { + if (parsed.segwitType === SEGWIT_TYPES.P2SH_P2WPKH) { + actual = segwitRedeemHash(publicKeyHash); + expected = bs58check.decode(address).slice(1); + } else { + // parsed.segwitType === SEGWIT_TYPES.P2WPKH + // must be true since we only return null, P2SH_P2WPKH, or P2WPKH + // from the decodeSignature function. + actual = publicKeyHash; + expected = decodeBech32(address); + } + } else { + if (checkSegwitAlways) { + try { + expected = decodeBech32(address); + // if address is bech32 it is not p2sh + return publicKeyHash.equals(expected); + } catch (e) { + const redeemHash = segwitRedeemHash(publicKeyHash); + expected = bs58check.decode(address).slice(1); + // base58 can be p2pkh or p2sh-p2wpkh + return publicKeyHash.equals(expected) || redeemHash.equals(expected); + } + } else { + actual = publicKeyHash; + expected = bs58check.decode(address).slice(1); + } + } + return actual.equals(expected); +} +exports.verify = verify; diff --git a/src/crypto.d.ts b/src/crypto.d.ts new file mode 100644 index 0000000..e2fac90 --- /dev/null +++ b/src/crypto.d.ts @@ -0,0 +1,4 @@ +/// +export declare function sha256(buffer: Buffer): Buffer; +export declare function hash256(buffer: Buffer): Buffer; +export declare function hash160(buffer: Buffer): Buffer; diff --git a/src/crypto.js b/src/crypto.js new file mode 100644 index 0000000..649307f --- /dev/null +++ b/src/crypto.js @@ -0,0 +1,16 @@ +'use strict'; +Object.defineProperty(exports, '__esModule', { value: true }); +exports.hash160 = exports.hash256 = exports.sha256 = void 0; +const createHash = require('create-hash'); +function sha256(buffer) { + return createHash('sha256').update(buffer).digest(); +} +exports.sha256 = sha256; +function hash256(buffer) { + return sha256(sha256(buffer)); +} +exports.hash256 = hash256; +function hash160(buffer) { + return createHash('ripemd160').update(sha256(buffer)).digest(); +} +exports.hash160 = hash160; diff --git a/src/index.d.ts b/src/index.d.ts new file mode 100644 index 0000000..37995d8 --- /dev/null +++ b/src/index.d.ts @@ -0,0 +1 @@ +export { magicHash, sign, signAsync, verify } from './bitcoin-message'; diff --git a/src/index.js b/src/index.js new file mode 100644 index 0000000..5390fbd --- /dev/null +++ b/src/index.js @@ -0,0 +1,28 @@ +'use strict'; +Object.defineProperty(exports, '__esModule', { value: true }); +exports.verify = exports.signAsync = exports.sign = exports.magicHash = void 0; +var bitcoin_message_1 = require('./bitcoin-message'); +Object.defineProperty(exports, 'magicHash', { + enumerable: true, + get: function () { + return bitcoin_message_1.magicHash; + }, +}); +Object.defineProperty(exports, 'sign', { + enumerable: true, + get: function () { + return bitcoin_message_1.sign; + }, +}); +Object.defineProperty(exports, 'signAsync', { + enumerable: true, + get: function () { + return bitcoin_message_1.signAsync; + }, +}); +Object.defineProperty(exports, 'verify', { + enumerable: true, + get: function () { + return bitcoin_message_1.verify; + }, +}); diff --git a/test/bitcoin-message.spec.js b/test/bitcoin-message.spec.js new file mode 100644 index 0000000..56fc328 --- /dev/null +++ b/test/bitcoin-message.spec.js @@ -0,0 +1,160 @@ +"use strict"; +Object.defineProperty(exports, "__esModule", { value: true }); +const assert = require("assert"); +const mocha_1 = require("mocha"); +const ecpair_1 = require("ecpair"); +const bs58check = require("bs58check"); +const bech32_1 = require("bech32"); +const bitcoinjs = require("bitcoinjs-lib"); +const tinySecp256k1 = require("tiny-secp256k1"); +const crypto_1 = require("../src/crypto"); +const message = require("../src"); +const fixtures = require("./fixtures.json"); +const BigInteger = require('bigi'); +const ECPair = (0, ecpair_1.default)(tinySecp256k1); +function getMessagePrefix(networkName) { + // @ts-ignore + return fixtures.networks[networkName]; +} +(0, mocha_1.describe)('magicHash', () => { + fixtures.valid.magicHash.forEach((f) => { + (0, mocha_1.it)('produces the magicHash for "' + f.message + '" (' + f.network + ')', () => { + const actual = message.magicHash(f.message, getMessagePrefix(f.network)); + assert.strictEqual(actual.toString('hex'), f.magicHash); + }); + }); +}); +(0, mocha_1.describe)('sign', () => { + fixtures.valid.sign.forEach((f) => { + (0, mocha_1.it)(f.description, async () => { + const pk = ECPair.fromPrivateKey(new BigInteger(f.d).toBuffer(32)).privateKey; + const signer = (hash, ex) => tinySecp256k1.signRecoverable(hash, pk, ex); + const signerAsync = async (hash, ex) => tinySecp256k1.signRecoverable(hash, pk, ex); + let signature = message.sign(f.message, pk, false, getMessagePrefix(f.network)); + const signature2 = message.sign(f.message, { sign: signer }, false, getMessagePrefix(f.network)); + const signature3 = await message.signAsync(f.message, { sign: signerAsync }, false, getMessagePrefix(f.network)); + const signature4 = await message.signAsync(f.message, { sign: signer }, false, getMessagePrefix(f.network)); + const signature5 = await message.signAsync(f.message, pk, false, getMessagePrefix(f.network)); + assert.strictEqual(signature.toString('base64'), f.signature); + assert.strictEqual(signature2.toString('base64'), f.signature); + assert.strictEqual(signature3.toString('base64'), f.signature); + assert.strictEqual(signature4.toString('base64'), f.signature); + assert.strictEqual(signature5.toString('base64'), f.signature); + if (f.compressed) { + signature = message.sign(f.message, pk, true, getMessagePrefix(f.network)); + assert.strictEqual(signature.toString('base64'), f.compressed.signature); + } + if (f.segwit) { + if (f.segwit.P2SH_P2WPKH) { + signature = message.sign(f.message, pk, true, getMessagePrefix(f.network), { segwitType: 'p2sh(p2wpkh)' }); + assert.strictEqual(signature.toString('base64'), f.segwit.P2SH_P2WPKH.signature); + } + if (f.segwit.P2WPKH) { + signature = message.sign(f.message, pk, true, getMessagePrefix(f.network), { segwitType: 'p2wpkh' }); + assert.strictEqual(signature.toString('base64'), f.segwit.P2WPKH.signature); + } + } + }); + }); +}); +(0, mocha_1.describe)('verify', () => { + fixtures.valid.verify.forEach((f) => { + (0, mocha_1.it)('a valid signature for "' + f.message + '" (' + f.network + ')', () => { + assert.strictEqual(message.verify(f.message, f.address, f.signature, getMessagePrefix(f.network)), true); + if (f.network === 'bitcoin') { + // defaults to bitcoin network + assert.strictEqual(message.verify(f.message, f.address, f.signature), true); + } + if (f.compressed) { + assert.strictEqual(message.verify(f.message, f.compressed.address, f.compressed.signature, getMessagePrefix(f.network)), true); + } + if (f.segwit) { + if (f.segwit.P2SH_P2WPKH) { + assert.strictEqual(message.verify(f.message, f.segwit.P2SH_P2WPKH.address, f.segwit.P2SH_P2WPKH.signature, getMessagePrefix(f.network)), true); + assert.strictEqual(message.verify(f.message, f.segwit.P2SH_P2WPKH.address, f.segwit.P2SH_P2WPKH.signature.replace(/^./, 'I'), getMessagePrefix(f.network), true), true); + } + if (f.segwit.P2WPKH) { + assert.strictEqual(message.verify(f.message, f.segwit.P2WPKH.address, f.segwit.P2WPKH.signature, getMessagePrefix(f.network)), true); + assert.strictEqual(message.verify(f.message, f.segwit.P2WPKH.address, f.segwit.P2WPKH.signature.replace(/^./, 'I'), getMessagePrefix(f.network), true), true); + } + } + }); + }); +}); +(0, mocha_1.describe)('decode signature', () => { + fixtures.invalid.signature.forEach((f) => { + (0, mocha_1.it)('throws on ' + f.hex, () => { + assert.throws(() => { + message.verify(null, null, Buffer.from(f.hex, 'hex'), null); + }, new RegExp('^Error: ' + f.exception + '$')); + }); + }); +}); +(0, mocha_1.describe)('verify signature', () => { + fixtures.invalid.verify.forEach((f) => { + (0, mocha_1.it)(f.description, () => { + assert.strictEqual(message.verify(f.message, f.address, f.signature, getMessagePrefix('bitcoin')), false); + }); + }); +}); +(0, mocha_1.describe)('verify random signature', () => { + fixtures.randomSig.forEach((f) => { + (0, mocha_1.it)(f.description, () => { + const keyPair = ECPair.fromWIF(f.wif); + const address = bitcoinjs.payments.p2pkh({ + pubkey: keyPair.publicKey, + }).address; + f.signatures.forEach((s) => { + const signature = message.sign(f.message, keyPair.privateKey, keyPair.compressed, { extraEntropy: Buffer.from(s.sigData, 'base64') }); + assert.strictEqual(message.verify(f.message, address, signature), true); + }); + }); + }); +}); +(0, mocha_1.describe)('Check that compressed signatures can be verified as segwit', () => { + const keyPair = ECPair.makeRandom(); + const publicKeyHash = (0, crypto_1.hash160)(keyPair.publicKey); + const p2shp2wpkhRedeemHash = segwitRedeemHash(publicKeyHash); + const p2pkhAddress = bitcoinjs.payments.p2pkh({ + pubkey: keyPair.publicKey, + }).address; + const p2shp2wpkhAddress = bs58check.encode(Buffer.concat([Buffer.from([5]), p2shp2wpkhRedeemHash])); + const p2wpkhAddress = bech32_1.bech32.encode('bc', [0].concat(bech32_1.bech32.toWords(publicKeyHash))); + const msg = 'Sign me'; + const signature = message.sign(msg, keyPair.privateKey, true); + // Make sure it verifies + assert.strictEqual(message.verify(msg, p2pkhAddress, signature), true); + // Make sure it verifies even with checkSegwitAlways + assert.strictEqual(message.verify(msg, p2pkhAddress, signature, null, true), true); + // Check segwit addresses with true + assert.strictEqual(message.verify(msg, p2shp2wpkhAddress, signature, null, true), true); + assert.strictEqual(message.verify(msg, p2wpkhAddress, signature, null, true), true); + // Check segwit with false + assert.strictEqual(message.verify(msg, p2shp2wpkhAddress, signature) === false, true); + assert.throws(() => { + message.verify(msg, p2wpkhAddress, signature); + }, new RegExp('^Error: Non-base58 character$')); + const signatureUncompressed = message.sign(msg, keyPair.privateKey, false); + assert.throws(() => { + message.verify(msg, p2shp2wpkhAddress, signatureUncompressed, null, true); + }, new RegExp('^Error: checkSegwitAlways can only be used with a compressed pubkey signature flagbyte$')); +}); +(0, mocha_1.describe)('Check that invalid segwitType fails', () => { + const keyPair = ECPair.fromWIF('L3n3e2LggPA5BuhXyBetWGhUfsEBTFe9Y6LhyAhY2mAXkA9jNE56'); + assert.throws(() => { + message.sign('Sign me', keyPair.privateKey, true, { segwitType: 'XYZ' }); + }, new RegExp('Unrecognized segwitType: use "p2sh\\(p2wpkh\\)" or "p2wpkh"')); +}); +(0, mocha_1.describe)('Check that Buffers and wrapped Strings are accepted', () => { + const keyPair = ECPair.fromWIF('L3n3e2LggPA5BuhXyBetWGhUfsEBTFe9Y6LhyAhY2mAXkA9jNE56'); + // eslint-disable-next-line no-new-wrappers + const sig = message.sign(Buffer.from('Sign me', 'utf8'), keyPair.privateKey, true, Buffer.from([1, 2, 3, 4]), { segwitType: 'p2wpkh' }); + assert.strictEqual(sig.toString('hex'), '276e5e5e75196dd93bba7b98f29f944156286d94cb34c376822c6ebc93e08d7b2d177e1f2215b2879caee53f39a376cf350ffdca70df4398a12d5b5adaf3b0f0bc'); +}); +function segwitRedeemHash(publicKeyHash) { + const redeemScript = Buffer.concat([ + Buffer.from('0014', 'hex'), + publicKeyHash, + ]); + return (0, crypto_1.hash160)(redeemScript); +} diff --git a/test/bitcoin-message.spec.ts b/test/bitcoin-message.spec.ts new file mode 100644 index 0000000..b96e85f --- /dev/null +++ b/test/bitcoin-message.spec.ts @@ -0,0 +1,344 @@ +import * as assert from 'assert'; +import { describe, it } from 'mocha'; + +import ECPairFactory from 'ecpair'; +import * as bs58check from 'bs58check'; +import { bech32 } from 'bech32'; +import * as bitcoinjs from 'bitcoinjs-lib'; +import * as tinySecp256k1 from 'tiny-secp256k1'; + +import { hash160 } from '../src/crypto'; +import * as message from '../src'; +import * as fixtures from './fixtures.json'; + +const BigInteger = require('bigi'); +const ECPair = ECPairFactory(tinySecp256k1); + +function getMessagePrefix(networkName: string): string { + // @ts-ignore + return fixtures.networks[networkName]; +} + +describe('magicHash', () => { + fixtures.valid.magicHash.forEach((f) => { + it( + 'produces the magicHash for "' + f.message + '" (' + f.network + ')', + () => { + const actual = message.magicHash( + f.message, + getMessagePrefix(f.network), + ); + assert.strictEqual(actual.toString('hex'), f.magicHash); + }, + ); + }); +}); + +describe('sign', () => { + fixtures.valid.sign.forEach((f) => { + it(f.description, async () => { + const pk = ECPair.fromPrivateKey( + new BigInteger(f.d).toBuffer(32), + ).privateKey; + const signer = (hash: Buffer, ex: Buffer) => + tinySecp256k1.signRecoverable(hash, pk!, ex); + const signerAsync = async (hash: Buffer, ex: Buffer) => + tinySecp256k1.signRecoverable(hash, pk!, ex); + let signature = message.sign( + f.message, + pk, + false, + getMessagePrefix(f.network), + ); + const signature2 = message.sign( + f.message, + { sign: signer }, + false, + getMessagePrefix(f.network), + ); + const signature3 = await message.signAsync( + f.message, + { sign: signerAsync }, + false, + getMessagePrefix(f.network), + ); + const signature4 = await message.signAsync( + f.message, + { sign: signer }, + false, + getMessagePrefix(f.network), + ); + const signature5 = await message.signAsync( + f.message, + pk, + false, + getMessagePrefix(f.network), + ); + assert.strictEqual(signature.toString('base64'), f.signature); + assert.strictEqual(signature2.toString('base64'), f.signature); + assert.strictEqual(signature3.toString('base64'), f.signature); + assert.strictEqual(signature4.toString('base64'), f.signature); + assert.strictEqual(signature5.toString('base64'), f.signature); + + if (f.compressed) { + signature = message.sign( + f.message, + pk, + true, + getMessagePrefix(f.network), + ); + assert.strictEqual( + signature.toString('base64'), + f.compressed.signature, + ); + } + + if (f.segwit) { + if (f.segwit.P2SH_P2WPKH) { + signature = message.sign( + f.message, + pk, + true, + getMessagePrefix(f.network), + { segwitType: 'p2sh(p2wpkh)' }, + ); + assert.strictEqual( + signature.toString('base64'), + f.segwit.P2SH_P2WPKH.signature, + ); + } + if (f.segwit.P2WPKH) { + signature = message.sign( + f.message, + pk, + true, + getMessagePrefix(f.network), + { segwitType: 'p2wpkh' }, + ); + assert.strictEqual( + signature.toString('base64'), + f.segwit.P2WPKH.signature, + ); + } + } + }); + }); +}); +describe('verify', () => { + fixtures.valid.verify.forEach((f) => { + it('a valid signature for "' + f.message + '" (' + f.network + ')', () => { + assert.strictEqual( + message.verify( + f.message, + f.address, + f.signature, + getMessagePrefix(f.network), + ), + true, + ); + + if (f.network === 'bitcoin') { + // defaults to bitcoin network + assert.strictEqual( + message.verify(f.message, f.address, f.signature), + true, + ); + } + + if (f.compressed) { + assert.strictEqual( + message.verify( + f.message, + f.compressed.address, + f.compressed.signature, + getMessagePrefix(f.network), + ), + true, + ); + } + + if (f.segwit) { + if (f.segwit.P2SH_P2WPKH) { + assert.strictEqual( + message.verify( + f.message, + f.segwit.P2SH_P2WPKH.address, + f.segwit.P2SH_P2WPKH.signature, + getMessagePrefix(f.network), + ), + true, + ); + assert.strictEqual( + message.verify( + f.message, + f.segwit.P2SH_P2WPKH.address, + f.segwit.P2SH_P2WPKH.signature.replace(/^./, 'I'), + getMessagePrefix(f.network), + true, + ), + true, + ); + } + if (f.segwit.P2WPKH) { + assert.strictEqual( + message.verify( + f.message, + f.segwit.P2WPKH.address, + f.segwit.P2WPKH.signature, + getMessagePrefix(f.network), + ), + true, + ); + assert.strictEqual( + message.verify( + f.message, + f.segwit.P2WPKH.address, + f.segwit.P2WPKH.signature.replace(/^./, 'I'), + getMessagePrefix(f.network), + true, + ), + true, + ); + } + } + }); + }); +}); +describe('decode signature', () => { + fixtures.invalid.signature.forEach((f) => { + it('throws on ' + f.hex, () => { + assert.throws(() => { + message.verify(null!, null!, Buffer.from(f.hex, 'hex'), null!); + }, new RegExp('^Error: ' + f.exception + '$')); + }); + }); +}); + +describe('verify signature', () => { + fixtures.invalid.verify.forEach((f) => { + it(f.description, () => { + assert.strictEqual( + message.verify( + f.message, + f.address, + f.signature, + getMessagePrefix('bitcoin'), + ), + false, + ); + }); + }); +}); + +describe('verify random signature', () => { + fixtures.randomSig.forEach((f) => { + it(f.description, () => { + const keyPair = ECPair.fromWIF(f.wif); + const address = bitcoinjs.payments.p2pkh({ + pubkey: keyPair.publicKey, + }).address; + f.signatures.forEach((s) => { + const signature = message.sign( + f.message, + keyPair.privateKey, + keyPair.compressed, + { extraEntropy: Buffer.from(s.sigData, 'base64') }, + ); + assert.strictEqual( + message.verify(f.message, address!, signature), + true, + ); + }); + }); + }); +}); + +describe('Check that compressed signatures can be verified as segwit', () => { + const keyPair = ECPair.makeRandom(); + const publicKeyHash = hash160(keyPair.publicKey); + const p2shp2wpkhRedeemHash = segwitRedeemHash(publicKeyHash); + + const p2pkhAddress = bitcoinjs.payments.p2pkh({ + pubkey: keyPair.publicKey, + }).address; + + const p2shp2wpkhAddress = bs58check.encode( + Buffer.concat([Buffer.from([5]), p2shp2wpkhRedeemHash]), + ); + const p2wpkhAddress = bech32.encode( + 'bc', + [0].concat(bech32.toWords(publicKeyHash)), + ); + + const msg = 'Sign me'; + const signature = message.sign(msg, keyPair.privateKey, true); + + // Make sure it verifies + assert.strictEqual(message.verify(msg, p2pkhAddress!, signature), true); + // Make sure it verifies even with checkSegwitAlways + assert.strictEqual( + message.verify(msg, p2pkhAddress!, signature, null, true), + true, + ); + + // Check segwit addresses with true + assert.strictEqual( + message.verify(msg, p2shp2wpkhAddress, signature, null, true), + true, + ); + assert.strictEqual( + message.verify(msg, p2wpkhAddress, signature, null, true), + true, + ); + // Check segwit with false + assert.strictEqual( + message.verify(msg, p2shp2wpkhAddress, signature) === false, + true, + ); + + assert.throws(() => { + message.verify(msg, p2wpkhAddress, signature); + }, new RegExp('^Error: Non-base58 character$')); + + const signatureUncompressed = message.sign(msg, keyPair.privateKey, false); + assert.throws(() => { + message.verify(msg, p2shp2wpkhAddress, signatureUncompressed, null, true); + }, new RegExp('^Error: checkSegwitAlways can only be used with a compressed pubkey signature flagbyte$')); +}); + +describe('Check that invalid segwitType fails', () => { + const keyPair = ECPair.fromWIF( + 'L3n3e2LggPA5BuhXyBetWGhUfsEBTFe9Y6LhyAhY2mAXkA9jNE56', + ); + + assert.throws(() => { + message.sign('Sign me', keyPair.privateKey, true, { segwitType: 'XYZ' }); + }, new RegExp('Unrecognized segwitType: use "p2sh\\(p2wpkh\\)" or "p2wpkh"')); +}); + +describe('Check that Buffers and wrapped Strings are accepted', () => { + const keyPair = ECPair.fromWIF( + 'L3n3e2LggPA5BuhXyBetWGhUfsEBTFe9Y6LhyAhY2mAXkA9jNE56', + ); + + // eslint-disable-next-line no-new-wrappers + const sig = message.sign( + Buffer.from('Sign me', 'utf8'), + keyPair.privateKey, + true, + Buffer.from([1, 2, 3, 4]), + { segwitType: 'p2wpkh' }, + ); + assert.strictEqual( + sig.toString('hex'), + '276e5e5e75196dd93bba7b98f29f944156286d94cb34c376822c6ebc93e08d7b2d177e1f2215b2879caee53f39a376cf350ffdca70df4398a12d5b5adaf3b0f0bc', + ); +}); + +function segwitRedeemHash(publicKeyHash: Buffer): Buffer { + const redeemScript = Buffer.concat([ + Buffer.from('0014', 'hex'), + publicKeyHash, + ]); + return hash160(redeemScript); +} diff --git a/test/index.js b/test/index.js deleted file mode 100644 index b9a0505..0000000 --- a/test/index.js +++ /dev/null @@ -1,296 +0,0 @@ -const test = require('tape').test -const bs58check = require('bs58check') -const bech32 = require('bech32') -const createHash = require('create-hash') -const bitcoin = require('bitcoinjs-lib') -const BigInteger = require('bigi') -const secp256k1 = require('secp256k1') -const message = require('../') - -const fixtures = require('./fixtures.json') - -function getMessagePrefix (networkName) { - return fixtures.networks[networkName] -} - -fixtures.valid.magicHash.forEach(f => { - test( - 'produces the magicHash for "' + f.message + '" (' + f.network + ')', - t => { - const actual = message.magicHash(f.message, getMessagePrefix(f.network)) - t.same(actual.toString('hex'), f.magicHash) - t.end() - } - ) -}) - -fixtures.valid.sign.forEach(f => { - test('sign: ' + f.description, async t => { - const pk = new bitcoin.ECPair(new BigInteger(f.d)).d.toBuffer(32) - const signer = (hash, ex) => secp256k1.sign(hash, pk, { data: ex }) - const signerAsync = async (hash, ex) => secp256k1.sign(hash, pk, { data: ex }) - let signature = message.sign( - f.message, - pk, - false, - getMessagePrefix(f.network) - ) - let signature2 = message.sign( - f.message, - { sign: signer }, - false, - getMessagePrefix(f.network) - ) - let signature3 = await message.signAsync( - f.message, - { sign: signerAsync }, - false, - getMessagePrefix(f.network) - ) - let signature4 = await message.signAsync( - f.message, - { sign: signer }, - false, - getMessagePrefix(f.network) - ) - let signature5 = await message.signAsync( - f.message, - pk, - false, - getMessagePrefix(f.network) - ) - t.same(signature.toString('base64'), f.signature) - t.same(signature2.toString('base64'), f.signature) - t.same(signature3.toString('base64'), f.signature) - t.same(signature4.toString('base64'), f.signature) - t.same(signature5.toString('base64'), f.signature) - - if (f.compressed) { - signature = message.sign(f.message, pk, true, getMessagePrefix(f.network)) - t.same(signature.toString('base64'), f.compressed.signature) - } - - if (f.segwit) { - if (f.segwit.P2SH_P2WPKH) { - signature = message.sign( - f.message, - pk, - true, - getMessagePrefix(f.network), - { segwitType: 'p2sh(p2wpkh)' } - ) - t.same(signature.toString('base64'), f.segwit.P2SH_P2WPKH.signature) - } - if (f.segwit.P2WPKH) { - signature = message.sign( - f.message, - pk, - true, - getMessagePrefix(f.network), - { segwitType: 'p2wpkh' } - ) - t.same(signature.toString('base64'), f.segwit.P2WPKH.signature) - } - } - - t.end() - }) -}) - -fixtures.valid.verify.forEach(f => { - test( - 'verifies a valid signature for "' + f.message + '" (' + f.network + ')', - t => { - t.true( - message.verify( - f.message, - f.address, - f.signature, - getMessagePrefix(f.network) - ) - ) - - if (f.network === 'bitcoin') { - // defaults to bitcoin network - t.true(message.verify(f.message, f.address, f.signature)) - } - - if (f.compressed) { - t.true( - message.verify( - f.message, - f.compressed.address, - f.compressed.signature, - getMessagePrefix(f.network) - ) - ) - } - - if (f.segwit) { - if (f.segwit.P2SH_P2WPKH) { - t.true( - message.verify( - f.message, - f.segwit.P2SH_P2WPKH.address, - f.segwit.P2SH_P2WPKH.signature, - getMessagePrefix(f.network) - ) - ) - t.true( - message.verify( - f.message, - f.segwit.P2SH_P2WPKH.address, - f.segwit.P2SH_P2WPKH.signature.replace(/^./, 'I'), - getMessagePrefix(f.network), - true - ) - ) - } - if (f.segwit.P2WPKH) { - t.true( - message.verify( - f.message, - f.segwit.P2WPKH.address, - f.segwit.P2WPKH.signature, - getMessagePrefix(f.network) - ) - ) - t.true( - message.verify( - f.message, - f.segwit.P2WPKH.address, - f.segwit.P2WPKH.signature.replace(/^./, 'I'), - getMessagePrefix(f.network), - true - ) - ) - } - } - - t.end() - } - ) -}) - -fixtures.invalid.signature.forEach(f => { - test('decode signature: throws on ' + f.hex, t => { - t.throws(() => { - message.verify(null, null, Buffer.from(f.hex, 'hex'), null) - }, new RegExp('^Error: ' + f.exception + '$')) - t.end() - }) -}) - -fixtures.invalid.verify.forEach(f => { - test(f.description, t => { - t.false( - message.verify( - f.message, - f.address, - f.signature, - getMessagePrefix('bitcoin') - ) - ) - t.end() - }) -}) - -fixtures.randomSig.forEach(f => { - test(f.description, t => { - const keyPair = bitcoin.ECPair.fromWIF(f.wif) - const privateKey = keyPair.d.toBuffer(32) - const address = keyPair.getAddress() - f.signatures.forEach(s => { - const signature = message.sign( - f.message, - privateKey, - keyPair.compressed, - { extraEntropy: Buffer.from(s.sigData, 'base64') } - ) - t.true(message.verify(f.message, address, signature)) - }) - t.end() - }) -}) - -test('Check that compressed signatures can be verified as segwit', t => { - const keyPair = bitcoin.ECPair.makeRandom() - const privateKey = keyPair.d.toBuffer(32) - const publicKey = keyPair.getPublicKeyBuffer() - const publicKeyHash = hash160(publicKey) - const p2shp2wpkhRedeemHash = segwitRedeemHash(publicKeyHash) - // get addresses (p2pkh, p2sh-p2wpkh, p2wpkh) - const p2pkhAddress = keyPair.getAddress() - const p2shp2wpkhAddress = bs58check.encode(Buffer.concat([ - Buffer.from([5]), - p2shp2wpkhRedeemHash - ])) - const p2wpkhAddress = bech32.encode( - 'bc', - [0].concat(bech32.toWords(publicKeyHash)) - ) - - const msg = 'Sign me' - const signature = message.sign(msg, privateKey, true) - - // Make sure it verifies - t.true(message.verify(msg, p2pkhAddress, signature)) - // Make sure it verifies even with checkSegwitAlways - t.true(message.verify(msg, p2pkhAddress, signature, null, true)) - - // Check segwit addresses with true - t.true(message.verify(msg, p2shp2wpkhAddress, signature, null, true)) - t.true(message.verify(msg, p2wpkhAddress, signature, null, true)) - // Check segwit with false - t.true(message.verify(msg, p2shp2wpkhAddress, signature) === false) - t.throws(() => { - message.verify(msg, p2wpkhAddress, signature) - }, new RegExp('^Error: Non-base58 character$')) - - const signatureUncompressed = message.sign(msg, privateKey, false) - t.throws(() => { - message.verify(msg, p2shp2wpkhAddress, signatureUncompressed, null, true) - }, new RegExp('^Error: checkSegwitAlways can only be used with a compressed pubkey signature flagbyte$')) - - t.end() -}) - -test('Check that invalid segwitType fails', t => { - const keyPair = bitcoin.ECPair.fromWIF('L3n3e2LggPA5BuhXyBetWGhUfsEBTFe9Y6LhyAhY2mAXkA9jNE56') - const privateKey = keyPair.d.toBuffer(32) - - t.throws(() => { - message.sign('Sign me', privateKey, true, { segwitType: 'XYZ' }) - }, new RegExp('Unrecognized segwitType: use "p2sh\\(p2wpkh\\)" or "p2wpkh"')) - - t.end() -}) - -test('Check that Buffers and wrapped Strings are accepted', t => { - const keyPair = bitcoin.ECPair.fromWIF('L3n3e2LggPA5BuhXyBetWGhUfsEBTFe9Y6LhyAhY2mAXkA9jNE56') - const privateKey = keyPair.d.toBuffer(32) - - // eslint-disable-next-line no-new-wrappers - const sig = message.sign(Buffer.from('Sign me', 'utf8'), privateKey, true, Buffer.from([1, 2, 3, 4]), { segwitType: new String('p2wpkh') }) - t.equals(sig.toString('hex'), '276e5e5e75196dd93bba7b98f29f944156286d94cb34c376822c6ebc93e08d7b2d177e1f2215b2879caee53f39a376cf350ffdca70df4398a12d5b5adaf3b0f0bc') - - t.end() -}) - -function sha256 (b) { - return createHash('sha256') - .update(b) - .digest() -} -function hash160 (buffer) { - return createHash('ripemd160') - .update(sha256(buffer)) - .digest() -} -function segwitRedeemHash (publicKeyHash) { - const redeemScript = Buffer.concat([ - Buffer.from('0014', 'hex'), - publicKeyHash - ]) - return hash160(redeemScript) -} diff --git a/test/ts-node-register.js b/test/ts-node-register.js new file mode 100644 index 0000000..fef284d --- /dev/null +++ b/test/ts-node-register.js @@ -0,0 +1,5 @@ +// This file is required to run mocha tests on the TS files directly + +require("ts-node").register({ + project: "test/tsconfig.json", +}); diff --git a/test/tsconfig.json b/test/tsconfig.json new file mode 100644 index 0000000..4e4f529 --- /dev/null +++ b/test/tsconfig.json @@ -0,0 +1,40 @@ +{ + "compilerOptions": { + "target": "ESNEXT", + "module": "commonjs", + "outDir": "../", + "declaration": false, + "rootDir": "../", + "rootDirs": [ + "../src", + "../types" + ], + "types": [ + "node", + "mocha" + ], + "allowJs": false, + "resolveJsonModule": true, + "strict": true, + "noImplicitAny": true, + "strictNullChecks": true, + "strictFunctionTypes": true, + "strictBindCallApply": true, + "strictPropertyInitialization": true, + "noImplicitThis": true, + "alwaysStrict": true, + "esModuleInterop": false, + "noUnusedLocals": true, + "noUnusedParameters": true, + "baseUrl": ".", + "paths": { + "../src/*": ["../ts_src/*"] + } + }, + "include": [ + "./**/*.ts" + ], + "exclude": [ + "../ts_src/**/*.ts" + ] +} diff --git a/ts_src/bitcoin-message.ts b/ts_src/bitcoin-message.ts new file mode 100644 index 0000000..44d323b --- /dev/null +++ b/ts_src/bitcoin-message.ts @@ -0,0 +1,253 @@ +import * as bs58check from 'bs58check'; +import { bech32 } from 'bech32'; +import * as secp256k1 from 'tiny-secp256k1'; +import * as varuint from 'varuint-bitcoin'; + +import { hash160, hash256 } from './crypto'; + +const SEGWIT_TYPES = { + P2WPKH: 'p2wpkh', + P2SH_P2WPKH: 'p2sh(p2wpkh)', +}; + +export interface SignOptions { + segwitType?: string; + extraEntropy?: Buffer; + messagePrefixArg?: string; +} + +type RecoveryIdType = 0 | 1 | 2 | 3; +interface Signature { + compressed: boolean; + segwitType: string | null; + recovery: RecoveryIdType; + signature: Buffer; +} + +function encodeSignature( + signature: Buffer, + recovery: number, + compressed: boolean, + segwitType?: string, +): Buffer { + if (segwitType !== undefined) { + recovery += 8; + if (segwitType === SEGWIT_TYPES.P2WPKH) recovery += 4; + } else { + if (compressed) recovery += 4; + } + return Buffer.concat([Buffer.alloc(1, recovery + 27), signature]); +} + +function decodeSignature(buffer: Buffer): Signature { + if (buffer.length !== 65) throw new Error('Invalid signature length'); + + const flagByte = buffer.readUInt8(0) - 27; + if (flagByte > 15 || flagByte < 0) { + throw new Error('Invalid signature parameter'); + } + + return { + compressed: !!(flagByte & 12), + segwitType: !(flagByte & 8) + ? null + : !(flagByte & 4) + ? SEGWIT_TYPES.P2SH_P2WPKH + : SEGWIT_TYPES.P2WPKH, + recovery: (flagByte & 3) as RecoveryIdType, + signature: buffer.slice(1), + }; +} + +export function magicHash( + message: Buffer | string, + messagePrefix?: Buffer | string | null, +): Buffer { + messagePrefix = messagePrefix || '\u0018Bitcoin Signed Message:\n'; + if (!Buffer.isBuffer(messagePrefix)) { + messagePrefix = Buffer.from(messagePrefix, 'utf8'); + } + if (!Buffer.isBuffer(message)) { + message = Buffer.from(message, 'utf8'); + } + const messageVISize = varuint.encodingLength(message.length); + const buffer = Buffer.allocUnsafe( + messagePrefix.length + messageVISize + message.length, + ); + messagePrefix.copy(buffer, 0); + varuint.encode(message.length, buffer, messagePrefix.length); + message.copy(buffer, messagePrefix.length + messageVISize); + return hash256(buffer); +} + +function prepareSign( + messagePrefixArg?: string | Buffer | SignOptions, + sigOptions?: SignOptions, +): SignOptions { + if (typeof messagePrefixArg === 'object' && sigOptions === undefined) { + // @ts-ignore + sigOptions = messagePrefixArg; + messagePrefixArg = undefined; + } + let segwitType = (sigOptions || ({} as any)).segwitType; + const extraEntropy = sigOptions && sigOptions.extraEntropy; + if ( + segwitType && + (typeof segwitType === 'string' || segwitType instanceof String) + ) { + segwitType = segwitType.toLowerCase(); + } + if ( + segwitType && + segwitType !== SEGWIT_TYPES.P2SH_P2WPKH && + segwitType !== SEGWIT_TYPES.P2WPKH + ) { + throw new Error( + 'Unrecognized segwitType: use "' + + SEGWIT_TYPES.P2SH_P2WPKH + + '" or "' + + SEGWIT_TYPES.P2WPKH + + '"', + ); + } + + return { + // @ts-ignore + messagePrefixArg, + segwitType, + extraEntropy, + }; +} + +function isSigner(obj: any): boolean { + return obj && typeof obj.sign === 'function'; +} + +export function sign( + message: Buffer | string, + privateKey: Buffer | any, + compressed: boolean, + messagePrefix?: SignOptions | Buffer | string, + sigOptions?: SignOptions, +): Buffer { + const { messagePrefixArg, segwitType, extraEntropy } = prepareSign( + messagePrefix, + sigOptions, + ); + const hash = magicHash(message, messagePrefixArg); + const sigObj = isSigner(privateKey) + ? privateKey.sign(hash, extraEntropy) + : secp256k1.signRecoverable(hash, privateKey, extraEntropy); + return encodeSignature( + Buffer.from(sigObj.signature), + sigObj.recoveryId, + compressed, + segwitType, + ); +} + +export function signAsync( + message: Buffer | string, + privateKey: Buffer | any, + compressed: boolean, + messagePrefix: string, + sigOptions?: SignOptions, +): Promise { + let messagePrefixArg; + let extraEntropy; + let segwitType: string | undefined; + return Promise.resolve() + .then(() => { + ({ messagePrefixArg, segwitType, extraEntropy } = prepareSign( + messagePrefix, + sigOptions, + )); + const hash = magicHash(message, messagePrefixArg); + return isSigner(privateKey) + ? privateKey.sign(hash, extraEntropy) + : secp256k1.signRecoverable(hash, privateKey, extraEntropy); + }) + .then((sigObj) => { + return encodeSignature( + Buffer.from(sigObj.signature), + sigObj.recoveryId, + compressed, + segwitType, + ); + }); +} + +function segwitRedeemHash(publicKeyHash: Buffer): Buffer { + const redeemScript = Buffer.concat([ + Buffer.from('0014', 'hex'), + publicKeyHash, + ]); + return hash160(redeemScript); +} + +function decodeBech32(address: string): Buffer { + const result = bech32.decode(address); + const data = bech32.fromWords(result.words.slice(1)); + return Buffer.from(data); +} + +export function verify( + message: Buffer | string, + address: string, + signature: Buffer | string, + messagePrefix?: Buffer | string | null, + checkSegwitAlways?: boolean, +): boolean { + if (!Buffer.isBuffer(signature)) signature = Buffer.from(signature, 'base64'); + + const parsed = decodeSignature(signature); + + if (checkSegwitAlways && !parsed.compressed) { + throw new Error( + 'checkSegwitAlways can only be used with a compressed pubkey signature flagbyte', + ); + } + + const hash = magicHash(message, messagePrefix); + const publicKey = secp256k1.recover( + hash, + parsed.signature, + parsed.recovery, + parsed.compressed, + ); + if (!publicKey) throw new Error('Public key is point at infinity!'); + const publicKeyHash = hash160(Buffer.from(publicKey)); + let actual; + let expected; + + if (parsed.segwitType) { + if (parsed.segwitType === SEGWIT_TYPES.P2SH_P2WPKH) { + actual = segwitRedeemHash(publicKeyHash); + expected = bs58check.decode(address).slice(1); + } else { + // parsed.segwitType === SEGWIT_TYPES.P2WPKH + // must be true since we only return null, P2SH_P2WPKH, or P2WPKH + // from the decodeSignature function. + actual = publicKeyHash; + expected = decodeBech32(address); + } + } else { + if (checkSegwitAlways) { + try { + expected = decodeBech32(address); + // if address is bech32 it is not p2sh + return publicKeyHash.equals(expected); + } catch (e) { + const redeemHash = segwitRedeemHash(publicKeyHash); + expected = bs58check.decode(address).slice(1); + // base58 can be p2pkh or p2sh-p2wpkh + return publicKeyHash.equals(expected) || redeemHash.equals(expected); + } + } else { + actual = publicKeyHash; + expected = bs58check.decode(address).slice(1); + } + } + + return actual.equals(expected); +} diff --git a/ts_src/crypto.ts b/ts_src/crypto.ts new file mode 100644 index 0000000..cd10853 --- /dev/null +++ b/ts_src/crypto.ts @@ -0,0 +1,11 @@ +import * as createHash from 'create-hash'; + +export function sha256(buffer: Buffer): Buffer { + return createHash('sha256').update(buffer).digest(); +} +export function hash256(buffer: Buffer): Buffer { + return sha256(sha256(buffer)); +} +export function hash160(buffer: Buffer): Buffer { + return createHash('ripemd160').update(sha256(buffer)).digest(); +} diff --git a/ts_src/index.ts b/ts_src/index.ts new file mode 100644 index 0000000..37995d8 --- /dev/null +++ b/ts_src/index.ts @@ -0,0 +1 @@ +export { magicHash, sign, signAsync, verify } from './bitcoin-message'; diff --git a/tsconfig.json b/tsconfig.json new file mode 100644 index 0000000..3c74061 --- /dev/null +++ b/tsconfig.json @@ -0,0 +1,31 @@ +{ + "compilerOptions": { + "target": "ESNEXT", + "module": "commonjs", + "outDir": "./src", + "declaration": true, + "rootDir": "./ts_src", + "types": [ + "node" + ], + "allowJs": false, + "strict": true, + "noImplicitAny": true, + "strictNullChecks": true, + "strictFunctionTypes": true, + "strictBindCallApply": true, + "strictPropertyInitialization": true, + "noImplicitThis": true, + "alwaysStrict": true, + "esModuleInterop": false, + "noUnusedLocals": true, + "noUnusedParameters": true + }, + "include": [ + "ts_src/**/*.ts" + ], + "exclude": [ + "**/*.spec.ts", + "node_modules/**/*" + ] +} diff --git a/tslint.json b/tslint.json new file mode 100644 index 0000000..90e513d --- /dev/null +++ b/tslint.json @@ -0,0 +1,40 @@ +{ + "defaultSeverity": "error", + "extends": ["tslint:recommended"], + "rules": { + "array-type": false, + "arrow-parens": false, + "curly": false, + "indent": [ + true, + "spaces", + 2 + ], + "interface-name": [false], + "match-default-export-name": true, + "max-classes-per-file": [false], + "member-access": [true, "no-public"], + "no-bitwise": false, + "no-console": false, + "no-empty": [true, "allow-empty-catch"], + "no-implicit-dependencies": [true, "dev"], + "no-return-await": true, + "no-var-requires": false, + "no-unused-expression": false, + "object-literal-sort-keys": false, + "quotemark": [true, "single", "avoid-escape"], + "typedef": [ + true, + "call-signature", + "property-declaration" + ], + "variable-name": [ + true, + "ban-keywords", + "check-format", + "allow-leading-underscore", + "allow-pascal-case" + ] + }, + "rulesDirectory": [] +}