285 lines
8.5 KiB
JavaScript
285 lines
8.5 KiB
JavaScript
const { describe, it, beforeEach } = require('mocha')
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const assert = require('assert')
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const proxyquire = require('proxyquire')
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const hoodwink = require('hoodwink')
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const ECPair = require('../src/ecpair')
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const tinysecp = require('tiny-secp256k1')
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const fixtures = require('./fixtures/ecpair.json')
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const NETWORKS = require('../src/networks')
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const NETWORKS_LIST = [] // Object.values(NETWORKS)
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for (let networkName in NETWORKS) {
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NETWORKS_LIST.push(NETWORKS[networkName])
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}
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const ZERO = Buffer.alloc(32, 0)
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const ONE = Buffer.from('0000000000000000000000000000000000000000000000000000000000000001', 'hex')
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const GROUP_ORDER = Buffer.from('fffffffffffffffffffffffffffffffebaaedce6af48a03bbfd25e8cd0364141', 'hex')
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const GROUP_ORDER_LESS_1 = Buffer.from('fffffffffffffffffffffffffffffffebaaedce6af48a03bbfd25e8cd0364140', 'hex')
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describe('ECPair', () => {
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describe('getPublicKey', () => {
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let keyPair
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beforeEach(() => {
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keyPair = ECPair.fromPrivateKey(ONE)
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})
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it('calls pointFromScalar lazily', hoodwink(() => {
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assert.strictEqual(keyPair.__Q, undefined)
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// .publicKey forces the memoization
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assert.strictEqual(keyPair.publicKey.toString('hex'), '0279be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798')
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assert.strictEqual(keyPair.__Q.toString('hex'), '0279be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798')
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}))
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})
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describe('fromPrivateKey', () => {
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it('defaults to compressed', () => {
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const keyPair = ECPair.fromPrivateKey(ONE)
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assert.strictEqual(keyPair.compressed, true)
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})
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it('supports the uncompressed option', () => {
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const keyPair = ECPair.fromPrivateKey(ONE, {
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compressed: false
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})
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assert.strictEqual(keyPair.compressed, false)
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})
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it('supports the network option', () => {
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const keyPair = ECPair.fromPrivateKey(ONE, {
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compressed: false,
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network: NETWORKS.testnet
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})
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assert.strictEqual(keyPair.network, NETWORKS.testnet)
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})
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fixtures.valid.forEach(f => {
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it('derives public key for ' + f.WIF, () => {
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const d = Buffer.from(f.d, 'hex')
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const keyPair = ECPair.fromPrivateKey(d, {
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compressed: f.compressed
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})
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assert.strictEqual(keyPair.publicKey.toString('hex'), f.Q)
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})
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})
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fixtures.invalid.fromPrivateKey.forEach(f => {
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it('throws ' + f.exception, () => {
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const d = Buffer.from(f.d, 'hex')
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assert.throws(() => {
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ECPair.fromPrivateKey(d, f.options)
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}, new RegExp(f.exception))
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})
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})
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})
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describe('fromPublicKey', () => {
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fixtures.invalid.fromPublicKey.forEach(f => {
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it('throws ' + f.exception, () => {
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const Q = Buffer.from(f.Q, 'hex')
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assert.throws(() => {
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ECPair.fromPublicKey(Q, f.options)
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}, new RegExp(f.exception))
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})
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})
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})
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describe('fromWIF', () => {
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fixtures.valid.forEach(f => {
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it('imports ' + f.WIF + ' (' + f.network + ')', () => {
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const network = NETWORKS[f.network]
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const keyPair = ECPair.fromWIF(f.WIF, network)
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assert.strictEqual(keyPair.privateKey.toString('hex'), f.d)
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assert.strictEqual(keyPair.compressed, f.compressed)
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assert.strictEqual(keyPair.network, network)
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})
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})
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fixtures.valid.forEach(f => {
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it('imports ' + f.WIF + ' (via list of networks)', () => {
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const keyPair = ECPair.fromWIF(f.WIF, NETWORKS_LIST)
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assert.strictEqual(keyPair.privateKey.toString('hex'), f.d)
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assert.strictEqual(keyPair.compressed, f.compressed)
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assert.strictEqual(keyPair.network, NETWORKS[f.network])
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})
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})
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fixtures.invalid.fromWIF.forEach(f => {
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it('throws on ' + f.WIF, () => {
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assert.throws(() => {
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const networks = f.network ? NETWORKS[f.network] : NETWORKS_LIST
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ECPair.fromWIF(f.WIF, networks)
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}, new RegExp(f.exception))
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})
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})
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})
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describe('toWIF', () => {
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fixtures.valid.forEach(f => {
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it('exports ' + f.WIF, () => {
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const keyPair = ECPair.fromWIF(f.WIF, NETWORKS_LIST)
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const result = keyPair.toWIF()
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assert.strictEqual(result, f.WIF)
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})
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})
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})
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describe('makeRandom', () => {
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const d = Buffer.alloc(32, 4)
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const exWIF = 'KwMWvwRJeFqxYyhZgNwYuYjbQENDAPAudQx5VEmKJrUZcq6aL2pv'
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describe('uses randombytes RNG', () => {
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it('generates a ECPair', () => {
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const stub = { randombytes: () => { return d } }
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const ProxiedECPair = proxyquire('../src/ecpair', stub)
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const keyPair = ProxiedECPair.makeRandom()
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assert.strictEqual(keyPair.toWIF(), exWIF)
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})
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})
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it('allows a custom RNG to be used', () => {
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const keyPair = ECPair.makeRandom({
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rng: size => { return d.slice(0, size) }
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})
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assert.strictEqual(keyPair.toWIF(), exWIF)
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})
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it('retains the same defaults as ECPair constructor', () => {
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const keyPair = ECPair.makeRandom()
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assert.strictEqual(keyPair.compressed, true)
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assert.strictEqual(keyPair.network, NETWORKS.bitcoin)
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})
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it('supports the options parameter', () => {
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const keyPair = ECPair.makeRandom({
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compressed: false,
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network: NETWORKS.testnet
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})
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assert.strictEqual(keyPair.compressed, false)
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assert.strictEqual(keyPair.network, NETWORKS.testnet)
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})
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it('throws if d is bad length', () => {
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function rng () {
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return Buffer.alloc(28)
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}
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assert.throws(() => {
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ECPair.makeRandom({ rng: rng })
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}, /Expected Buffer\(Length: 32\), got Buffer\(Length: 28\)/)
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})
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it('loops until d is within interval [1, n) : 1', hoodwink(function () {
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const rng = this.stub(() => {
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if (rng.calls === 0) return ZERO // 0
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return ONE // >0
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}, 2)
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ECPair.makeRandom({ rng: rng })
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}))
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it('loops until d is within interval [1, n) : n - 1', hoodwink(function () {
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const rng = this.stub(() => {
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if (rng.calls === 0) return ZERO // <1
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if (rng.calls === 1) return GROUP_ORDER // >n-1
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return GROUP_ORDER_LESS_1 // n-1
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}, 3)
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ECPair.makeRandom({ rng: rng })
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}))
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})
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describe('.network', () => {
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fixtures.valid.forEach(f => {
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it('returns ' + f.network + ' for ' + f.WIF, () => {
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const network = NETWORKS[f.network]
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const keyPair = ECPair.fromWIF(f.WIF, NETWORKS_LIST)
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assert.strictEqual(keyPair.network, network)
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})
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})
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})
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describe('tinysecp wrappers', () => {
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let keyPair
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let hash
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let signature
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beforeEach(() => {
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keyPair = ECPair.makeRandom()
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hash = ZERO
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signature = Buffer.alloc(64, 1)
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})
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describe('signing', () => {
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it('wraps tinysecp.sign', hoodwink(function () {
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this.mock(tinysecp, 'sign', (h, d) => {
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assert.strictEqual(h, hash)
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assert.strictEqual(d, keyPair.privateKey)
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return signature
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}, 1)
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assert.strictEqual(keyPair.sign(hash), signature)
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}))
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it('throws if no private key is found', () => {
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delete keyPair.__D
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assert.throws(() => {
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keyPair.sign(hash)
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}, /Missing private key/)
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})
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})
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describe('verify', () => {
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it('wraps tinysecp.verify', hoodwink(function () {
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this.mock(tinysecp, 'verify', (h, q, s) => {
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assert.strictEqual(h, hash)
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assert.strictEqual(q, keyPair.publicKey)
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assert.strictEqual(s, signature)
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return true
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}, 1)
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assert.strictEqual(keyPair.verify(hash, signature), true)
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}))
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})
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})
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describe('optional low R signing', () => {
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const sig = Buffer.from('95a6619140fca3366f1d3b013b0367c4f86e39508a50fdce' +
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'e5245fbb8bd60aa6086449e28cf15387cf9f85100bfd0838624ca96759e59f65c10a00' +
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'16b86f5229', 'hex')
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const sigLowR = Buffer.from('6a2660c226e8055afad317eeba918a304be79208d505' +
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'3bc5ea4a5e4c5892b4a061c717c5284ae5202d721c0e49b4717b79966280906b1d3b52' +
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'95d1fdde963c35', 'hex')
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const lowRKeyPair = ECPair.fromWIF('L3nThUzbAwpUiBAjR5zCu66ybXSPMr2zZ3ikp' +
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'ScpTPiYTxBynfZu')
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const dataToSign = Buffer.from('b6c5c548a7f6164c8aa7af5350901626ebd69f9ae' +
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'2c1ecf8871f5088ec204cfe', 'hex')
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it('signs with normal R by default', () => {
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const signed = lowRKeyPair.sign(dataToSign)
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assert.deepStrictEqual(sig, signed)
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})
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it('signs with low R when true is passed', () => {
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const signed = lowRKeyPair.sign(dataToSign, true)
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assert.deepStrictEqual(sigLowR, signed)
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})
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})
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})
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