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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 | 41x 41x 43x 43x 67x 67x | /* @flow */ import bitcoinjs from 'bitcoinjs-lib' import { hexStringToECPair, ecPairToAddress } from '../utils' export interface TransactionSigner { /** * @returns version number of the signer, currently, should always be 1 * @private */ signerVersion(): number; /** * @returns a string representing the transaction signer's address * (usually Base58 check encoding) * @private */ getAddress(): Promise<string>; /** * Signs a transaction input * @param {TransactionBuilder} transaction - the transaction to sign * @param {number} inputIndex - the input on the transaction to sign * @private */ signTransaction(transaction: bitcoinjs.TransactionBuilder, inputIndex: number): Promise<void>; } /** * Class representing a transaction signer for pubkeyhash addresses * (a.k.a. single-sig addresses) * @private */ export class PubkeyHashSigner implements TransactionSigner { ecPair: bitcoinjs.ECPair constructor(ecPair: bitcoinjs.ECPair) { this.ecPair = ecPair } static fromHexString(keyHex: string) { return new PubkeyHashSigner(hexStringToECPair(keyHex)) } signerVersion(): number { return 1 } getAddress(): Promise<string> { return Promise.resolve() .then(() => ecPairToAddress(this.ecPair)) } signTransaction(transaction: bitcoinjs.TransactionBuilder, inputIndex: number) : Promise<void> { return Promise.resolve() .then(() => { transaction.sign(inputIndex, this.ecPair) }) } } |