import { AbstractHDWallet } from './abstract-hd-wallet'; const bitcoin = require('bitcoinjs-lib'); const bip39 = require('bip39'); /** * HD Wallet (BIP39). * In particular, Breadwallet-compatible (Legacy addresses) */ export class HDLegacyBreadwalletWallet extends AbstractHDWallet { constructor() { super(); this.type = 'HDLegacyBreadwallet'; } getTypeReadable() { return 'HD Legacy Breadwallet (P2PKH)'; } /** * @see https://github.com/bitcoinjs/bitcoinjs-lib/issues/584 * @see https://github.com/bitcoinjs/bitcoinjs-lib/issues/914 * @see https://github.com/bitcoinjs/bitcoinjs-lib/issues/997 */ getXpub() { if (this._xpub) { return this._xpub; // cache hit } let mnemonic = this.secret; let seed = bip39.mnemonicToSeed(mnemonic); let root = bitcoin.HDNode.fromSeedBuffer(seed); let path = "m/0'"; let child = root.derivePath(path).neutered(); this._xpub = child.toBase58(); return this._xpub; } _getExternalAddressByIndex(index) { index = index * 1; // cast to int if (this.external_addresses_cache[index]) return this.external_addresses_cache[index]; // cache hit let mnemonic = this.secret; let seed = bip39.mnemonicToSeed(mnemonic); let root = bitcoin.HDNode.fromSeedBuffer(seed); let path = "m/0'/0/" + index; let child = root.derivePath(path); return (this.external_addresses_cache[index] = child.getAddress()); } _getInternalAddressByIndex(index) { index = index * 1; // cast to int if (this.internal_addresses_cache[index]) return this.internal_addresses_cache[index]; // cache hit let mnemonic = this.secret; let seed = bip39.mnemonicToSeed(mnemonic); let root = bitcoin.HDNode.fromSeedBuffer(seed); let path = "m/0'/1/" + index; let child = root.derivePath(path); return (this.internal_addresses_cache[index] = child.getAddress()); } _getExternalWIFByIndex(index) { index = index * 1; // cast to int let mnemonic = this.secret; let seed = bip39.mnemonicToSeed(mnemonic); let root = bitcoin.HDNode.fromSeedBuffer(seed); let path = "m/0'/0/" + index; let child = root.derivePath(path); return child.keyPair.toWIF(); } _getInternalWIFByIndex(index) { index = index * 1; // cast to int let mnemonic = this.secret; let seed = bip39.mnemonicToSeed(mnemonic); let root = bitcoin.HDNode.fromSeedBuffer(seed); let path = "m/0'/1/" + index; let child = root.derivePath(path); return child.keyPair.toWIF(); } }