@secux/app-btc/lib/transaction_grs.js

SecuX Hardware Wallet BTC API

"use strict";
/*!
Copyright 2022 SecuX Technology Inc
Copyright Chen Wei-En
Copyright Wu Tsung-Yu

Licensed under the Apache License, Version 2.0 (the License);
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an AS IS BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/Object.defineProperty(exports,"__esModule",{value:!0}),exports.TransactionGRS=void 0;const hash_js_1=require("hash.js"),transaction_1=require("./transaction"),bufferutils_1=require("./bufferutils"),ZERO=Buffer.from("0000000000000000000000000000000000000000000000000000000000000000","hex");class TransactionGRS extends transaction_1.Transaction{static dataForWitnessV0(trans,inIndex,prevOutScript,value,hashType){let bufferWriter,tbuffer=Buffer.from([]),hashOutputs=ZERO,hashPrevouts=ZERO,hashSequence=ZERO;if(hashType&transaction_1.Transaction.SIGHASH_ANYONECANPAY||(tbuffer=Buffer.allocUnsafe(36*trans.ins.length),bufferWriter=new bufferutils_1.BufferWriter(tbuffer,0),trans.ins.forEach((txIn=>{bufferWriter.writeSlice(txIn.hash),bufferWriter.writeUInt32(txIn.index)})),hashPrevouts=Buffer.from((0,hash_js_1.sha256)().update(tbuffer).digest())),hashType&transaction_1.Transaction.SIGHASH_ANYONECANPAY||(31&hashType)===transaction_1.Transaction.SIGHASH_SINGLE||(31&hashType)===transaction_1.Transaction.SIGHASH_NONE||(tbuffer=Buffer.allocUnsafe(4*trans.ins.length),bufferWriter=new bufferutils_1.BufferWriter(tbuffer,0),trans.ins.forEach((txIn=>{bufferWriter.writeUInt32(txIn.sequence)})),hashSequence=Buffer.from((0,hash_js_1.sha256)().update(tbuffer).digest())),(31&hashType)!==transaction_1.Transaction.SIGHASH_SINGLE&&(31&hashType)!==transaction_1.Transaction.SIGHASH_NONE){const txOutsSize=trans.outs.reduce(((sum,output)=>sum+8+(0,transaction_1.varSliceSize)(output.script)),0);tbuffer=Buffer.allocUnsafe(txOutsSize),bufferWriter=new bufferutils_1.BufferWriter(tbuffer,0),trans.outs.forEach((out=>{bufferWriter.writeUInt64(out.value),bufferWriter.writeVarSlice(out.script)})),hashOutputs=Buffer.from((0,hash_js_1.sha256)().update(tbuffer).digest())}else if((31&hashType)===transaction_1.Transaction.SIGHASH_SINGLE&&inIndex<trans.outs.length){const output=trans.outs[inIndex];tbuffer=Buffer.allocUnsafe(8+(0,transaction_1.varSliceSize)(output.script)),bufferWriter=new bufferutils_1.BufferWriter(tbuffer,0),bufferWriter.writeUInt64(output.value),bufferWriter.writeVarSlice(output.script),hashOutputs=Buffer.from((0,hash_js_1.sha256)().update(tbuffer).digest())}tbuffer=Buffer.allocUnsafe(156+(0,transaction_1.varSliceSize)(prevOutScript)),bufferWriter=new bufferutils_1.BufferWriter(tbuffer,0);const input=trans.ins[inIndex];return bufferWriter.writeUInt32(trans.version),bufferWriter.writeSlice(hashPrevouts),bufferWriter.writeSlice(hashSequence),bufferWriter.writeSlice(input.hash),bufferWriter.writeUInt32(input.index),bufferWriter.writeVarSlice(prevOutScript),bufferWriter.writeUInt64(value),bufferWriter.writeUInt32(input.sequence),bufferWriter.writeSlice(hashOutputs),bufferWriter.writeUInt32(trans.locktime),bufferWriter.writeUInt32(hashType),tbuffer}static getHash(trans,forWitness){if(forWitness&&trans.isCoinbase())return Buffer.alloc(32,0);const data=trans.toBuffer(void 0,void 0,forWitness);return Buffer.from((0,hash_js_1.sha256)().update(data).digest())}}exports.TransactionGRS=TransactionGRS;