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configuration.md

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To allow configuration options, e.g. for SHA algorithm:

const bitcoin = require('bitcoinjs-lib')
const { buildTx } = require('tx-builder').builder
const txConfig = { version: 1, vin: [...]}
const options = {
  network: 'TESTNET'            // ('MAINNET', 'TESTNET'), default: 'TESTNET'
  sha: 'SHA3_256',              // ('SHA256' | 'SHA3_256'), default: 'SHA256'
  hashTimelockContract          // a function type
}
const buildTxSha3 = buildTx(options)
const tx = buildTxSha3()
console.log(tx.toString( 'hex' ))
// >>> "0100000001545f6161d2be3bdfe7184ee1f7..."

SHA algorith is used in these cases:

  • TXID, its a double hash, e.g. SHA3(SHA3())
  • signBuffer

Dependency path:

  • buildTx
    • bufferInput (to sign UTXO)
      • buildTxCopy (to hash tx before signing)
        • bufferOutput (this to customize specific blockchain, e.g. Equibit VS Bitcoin)