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Transaction: initialize to ZERO earlier

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This commit is contained in:
Daniel Cousens 2016-11-09 11:54:17 +11:00
parent 20577d42f2
commit bdf6a9d458
1 changed files with 4 additions and 6 deletions
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10
src/transaction.js
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@ -306,8 +306,6 @@ Transaction.prototype.hashForSignature = function (inIndex, prevOutScript, hashT
Transaction.prototype.hashForWitnessV0 = function (inIndex, prevOutScript, amount, hashType) { Transaction.prototype.hashForWitnessV0 = function (inIndex, prevOutScript, amount, hashType) {
typeforce(types.tuple(types.UInt32, types.Buffer, types.Satoshi, types.UInt32), arguments) typeforce(types.tuple(types.UInt32, types.Buffer, types.Satoshi, types.UInt32), arguments)
var hashOutputs, hashPrevouts, hashSequence
var tbuffer, toffset var tbuffer, toffset
function writeSlice (slice) { toffset += slice.copy(tbuffer, toffset) } function writeSlice (slice) { toffset += slice.copy(tbuffer, toffset) }
function writeUInt32 (i) { toffset = tbuffer.writeUInt32LE(i, toffset) } function writeUInt32 (i) { toffset = tbuffer.writeUInt32LE(i, toffset) }
@ -315,6 +313,10 @@ Transaction.prototype.hashForWitnessV0 = function (inIndex, prevOutScript, amoun
function writeVarInt (i) { toffset += bufferutils.writeVarInt(tbuffer, i, toffset) } function writeVarInt (i) { toffset += bufferutils.writeVarInt(tbuffer, i, toffset) }
function writeVarSlice (slice) { writeVarInt(slice.length); writeSlice(slice) } function writeVarSlice (slice) { writeVarInt(slice.length); writeSlice(slice) }
var hashOutputs = ZERO
var hashPrevouts = ZERO
var hashSequence = ZERO
if (!(hashType & Transaction.SIGHASH_ANYONECANPAY)) { if (!(hashType & Transaction.SIGHASH_ANYONECANPAY)) {
tbuffer = new Buffer(36 * this.ins.length) tbuffer = new Buffer(36 * this.ins.length)
toffset = 0 toffset = 0
@ -366,10 +368,6 @@ Transaction.prototype.hashForWitnessV0 = function (inIndex, prevOutScript, amoun
hashOutputs = bcrypto.hash256(tbuffer) hashOutputs = bcrypto.hash256(tbuffer)
} }
hashPrevouts = hashPrevouts || ZERO
hashSequence = hashSequence || ZERO
hashOutputs = hashOutputs || ZERO
tbuffer = new Buffer(156 + varSliceSize(prevOutScript)) tbuffer = new Buffer(156 + varSliceSize(prevOutScript))
toffset = 0 toffset = 0