j-bitcoin
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Comprehensive JavaScript/TypeScript Bitcoin (BTC) wallet library with custodial and non-custodial support, hierarchical deterministic keys, threshold signatures, and advanced cryptographic features
383 lines (305 loc) • 44 kB
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<title>src/transaction/parser.js - J-Bitcoin - Bitcoin Wallet Library</title>
<meta name="description" content="JavaScript/TypeScript Bitcoin wallet library with HD wallets, threshold signatures, and BIP compliance" />
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<h2><a href="index.html">Home</a></h2><h2><a href="https://github.com/yfbsei/J-Bitcoin" target="_blank" class="menu-item home-link" id="home-link" >🏠 Home</a></h2><h2><a href="https://github.com/yfbsei/J-Bitcoin" target="_blank" class="menu-item github-link" id="github-link" >📚 GitHub</a></h2><h2><a href="https://www.npmjs.com/package/j-bitcoin" target="_blank" class="menu-item npm-link" id="npm-link" >📦 NPM</a></h2><h2><a href="https://github.com/yfbsei/J-Bitcoin/tree/main/examples" target="_blank" class="menu-item examples-link" id="examples-link" >🔧 Examples</a></h2><h2><a href="https://github.com/yfbsei/J-Bitcoin/blob/main/CHANGELOG.md" target="_blank" class="menu-item changelog-link" id="changelog-link" >📊 Changelog</a></h2><h3>Classes</h3><ul><li><a href="BIP143.html">BIP143</a><ul class='methods'><li data-type='method' style='display: none;'><a href="BIP143.html#.calculate">calculate</a></li><li data-type='method' style='display: none;'><a href="BIP143.html#.forP2WPKH">forP2WPKH</a></li><li data-type='method' style='display: none;'><a href="BIP143.html#.hashOutputs">hashOutputs</a></li><li data-type='method' style='display: none;'><a href="BIP143.html#.hashPrevouts">hashPrevouts</a></li><li data-type='method' style='display: none;'><a href="BIP143.html#.hashSequence">hashSequence</a></li></ul></li><li><a href="BIP322.html">BIP322</a><ul class='methods'><li data-type='method' style='display: none;'><a href="BIP322.html#.createToSign">createToSign</a></li><li data-type='method' style='display: none;'><a href="BIP322.html#.createToSpend">createToSpend</a></li><li data-type='method' style='display: none;'><a href="BIP322.html#.hashMessage">hashMessage</a></li><li data-type='method' style='display: none;'><a href="BIP322.html#.sign">sign</a></li><li data-type='method' style='display: none;'><a href="BIP322.html#.signLegacy">signLegacy</a></li><li data-type='method' style='display: none;'><a href="BIP322.html#.verify">verify</a></li><li data-type='method' style='display: none;'><a href="BIP322.html#.verifyLegacy">verifyLegacy</a></li></ul></li><li><a href="BIP322Error.html">BIP322Error</a></li><li><a href="BIP341.html">BIP341</a><ul class='methods'><li data-type='method' style='display: none;'><a href="BIP341.html#.calculate">calculate</a></li><li data-type='method' style='display: none;'><a href="BIP341.html#.forScriptPath">forScriptPath</a></li><li data-type='method' style='display: none;'><a href="BIP341.html#.shaAmounts">shaAmounts</a></li><li data-type='method' style='display: none;'><a href="BIP341.html#.shaOutputs">shaOutputs</a></li><li data-type='method' style='display: none;'><a href="BIP341.html#.shaPrevouts">shaPrevouts</a></li><li data-type='method' style='display: none;'><a href="BIP341.html#.shaScriptPubkeys">shaScriptPubkeys</a></li><li data-type='method' style='display: none;'><a href="BIP341.html#.shaSequences">shaSequences</a></li></ul></li><li><a href="BIP49.html">BIP49</a><ul class='methods'><li data-type='method' style='display: none;'><a href="BIP49.html#.createRedeemScript">createRedeemScript</a></li><li data-type='method' style='display: none;'><a href="BIP49.html#.createScriptPubKey">createScriptPubKey</a></li><li data-type='method' style='display: none;'><a href="BIP49.html#.getAccountPath">getAccountPath</a></li><li data-type='method' style='display: none;'><a href="BIP49.html#.getDerivationPath">getDerivationPath</a></li><li data-type='method' style='display: none;'><a href="BIP49.html#.toAddress">toAddress</a></li></ul></li><li><a href="CustodialWallet.html">CustodialWallet</a><ul class='methods'><li data-type='method' style='display: none;'><a href="CustodialWallet.html#canSign">canSign</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#clearCache">clearCache</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#createTransaction">createTransaction</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#deriveAddress">deriveAddress</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#destroy">destroy</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#exportWIF">exportWIF</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#getAddresses">getAddresses</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#getChangeAddress">getChangeAddress</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#getExtendedPrivateKey">getExtendedPrivateKey</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#getExtendedPublicKey">getExtendedPublicKey</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#getMnemonic">getMnemonic</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#getNetwork">getNetwork</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#getReceivingAddress">getReceivingAddress</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#signMessage">signMessage</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#signMessageBIP322">signMessageBIP322</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#signTransaction">signTransaction</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#toJSON">toJSON</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#verifyMessage">verifyMessage</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#.createNew">createNew</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#.fromExtendedKey">fromExtendedKey</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#.fromMnemonic">fromMnemonic</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#.fromSeed">fromSeed</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#.fromWIF">fromWIF</a></li></ul></li><li></li><li><a href="CustodialWalletError.html">CustodialWalletError</a></li><li></li><li><a href="DecodingError.html">DecodingError</a></li><li><a href="ECDSAError.html">ECDSAError</a></li><li></li><li><a href="EncodingError.html">EncodingError</a></li><li><a href="JVRSS.html">JVRSS</a><ul class='methods'><li data-type='method' style='display: none;'><a href="JVRSS.html#broadcastObfuscatedCoefficients">broadcastObfuscatedCoefficients</a></li><li data-type='method' style='display: none;'><a href="JVRSS.html#calculateSharedPublicKey">calculateSharedPublicKey</a></li><li data-type='method' style='display: none;'><a href="JVRSS.html#calculateShares">calculateShares</a></li><li data-type='method' style='display: none;'><a href="JVRSS.html#clear">clear</a></li><li data-type='method' style='display: none;'><a href="JVRSS.html#distributePolynomialPoints">distributePolynomialPoints</a></li><li data-type='method' style='display: none;'><a href="JVRSS.html#generatePolynomials">generatePolynomials</a></li><li data-type='method' style='display: none;'><a href="JVRSS.html#getParticipant">getParticipant</a></li><li data-type='method' style='display: none;'><a href="JVRSS.html#getSharesForInterpolation">getSharesForInterpolation</a></li><li data-type='method' style='display: none;'><a href="JVRSS.html#reconstructSecret">reconstructSecret</a></li><li data-type='method' style='display: none;'><a href="JVRSS.html#runProtocol">runProtocol</a></li><li data-type='method' style='display: none;'><a href="JVRSS.html#verifyAllShares">verifyAllShares</a></li></ul></li><li><a href="JVRSSError.html">JVRSSError</a></li><li><a href="LegacySighash.html">LegacySighash</a><ul class='methods'><li data-type='method' style='display: none;'><a href="LegacySighash.html#.calculate">calculate</a></li></ul></li><li><a href="MPCError.html">MPCError</a></li><li><a href="NonCustodialWallet.html">NonCustodialWallet</a><ul class='methods'><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#_exportShares">_exportShares</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#_reconstructPublicKey">_reconstructPublicKey</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#canSign">canSign</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#canSignHD">canSignHD</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#clear">clear</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#clearAddressCache">clearAddressCache</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#createTransaction">createTransaction</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#deriveAddress">deriveAddress</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#destroy">destroy</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#exportShares">exportShares</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#exportWIF">exportWIF</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#generateEphemeralKeys">generateEphemeralKeys</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#getAddress">getAddress</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#getAddressCount">getAddressCount</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#getAddresses">getAddresses</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#getChangeAddress">getChangeAddress</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#getExtendedPrivateKey">getExtendedPrivateKey</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#getExtendedPublicKey">getExtendedPublicKey</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#getMnemonic">getMnemonic</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#getNetwork">getNetwork</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#getPublicKey">getPublicKey</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#getReceivingAddress">getReceivingAddress</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#getShare">getShare</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#getShares">getShares</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#getThresholdConfig">getThresholdConfig</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#hasHD">hasHD</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#initialize">initialize</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#listAddresses">listAddresses</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#sign">sign</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#signMessage">signMessage</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#signMessageBIP322">signMessageBIP322</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#signMessageHD">signMessageHD</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#signTransaction">signTransaction</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#toJSON">toJSON</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#verify">verify</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#verifyMessageHD">verifyMessageHD</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#.createNew">createNew</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#.createNewHD">createNewHD</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#.fromExtendedKey">fromExtendedKey</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#.fromMnemonic">fromMnemonic</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#.fromSeed">fromSeed</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#.fromShares">fromShares</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#.fromWIF">fromWIF</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#.importShares">importShares</a></li></ul></li><li><a href="Participant.html">Participant</a><ul class='methods'><li data-type='method' style='display: none;'><a href="Participant.html#calculateKeyShare">calculateKeyShare</a></li><li data-type='method' style='display: none;'><a href="Participant.html#clear">clear</a></li><li data-type='method' style='display: none;'><a href="Participant.html#evaluateAt">evaluateAt</a></li><li data-type='method' style='display: none;'><a href="Participant.html#generatePolynomial">generatePolynomial</a></li><li data-type='method' style='display: none;'><a href="Participant.html#generateSignatureShare">generateSignatureShare</a></li><li data-type='method' style='display: none;'><a href="Participant.html#getBlindingShare">getBlindingShare</a></li><li data-type='method' style='display: none;'><a href="Participant.html#getKeyShare">getKeyShare</a></li><li data-type='method' style='display: none;'><a href="Participant.html#getKeySharePublicKey">getKeySharePublicKey</a></li><li data-type='method' style='display: none;'><a href="Participant.html#getNextEphemeralKey">getNextEphemeralKey</a></li><li data-type='method' style='display: none;'><a href="Participant.html#getObfuscatedCoefficients">getObfuscatedCoefficients</a></li><li data-type='method' style='display: none;'><a href="Participant.html#getPolynomialPointFor">getPolynomialPointFor</a></li><li data-type='method' style='display: none;'><a href="Participant.html#receivePolynomialPoint">receivePolynomialPoint</a></li><li data-type='method' style='display: none;'><a href="Participant.html#setBlindingShare">setBlindingShare</a></li><li data-type='method' style='display: none;'><a href="Participant.html#storeEphemeralKey">storeEphemeralKey</a></li><li data-type='method' style='display: none;'><a href="Participant.html#verifyPolynomialPoint">verifyPolynomialPoint</a></li></ul></li><li><a href="ParticipantError.html">ParticipantError</a></li><li><a href="ParticipantShare.html">ParticipantShare</a></li><li><a href="Polynomial.html">Polynomial</a><ul class='methods'><li data-type='method' style='display: none;'><a href="Polynomial.html#clear">clear</a></li><li data-type='method' style='display: none;'><a href="Polynomial.html#evaluate">evaluate</a></li><li data-type='method' style='display: none;'><a href="Polynomial.html#generateShares">generateShares</a></li><li data-type='method' style='display: none;'><a href="Polynomial.html#getCoefficients">getCoefficients</a></li><li data-type='method' style='display: none;'><a href="Polynomial.html#getSecret">getSecret</a></li><li data-type='method' style='display: none;'><a href="Polynomial.html#.interpolate">interpolate</a></li><li data-type='method' style='display: none;'><a href="Polynomial.html#.lagrangeCoefficient">lagrangeCoefficient</a></li><li data-type='method' style='display: none;'><a href="Polynomial.html#.reconstructSecret">reconstructSecret</a></li></ul></li><li><a href="PolynomialError.html">PolynomialError</a></li><li><a href="Schnorr.html">Schnorr</a><ul class='methods'><li data-type='method' style='display: none;'><a href="Schnorr.html#sign">sign</a></li></ul></li><li><a href="SchnorrError.html">SchnorrError</a></li><li></li><li><a href="ScriptBuilder.html">ScriptBuilder</a><ul class='methods'><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#addOp">addOp</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#build">build</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#pushData">pushData</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#pushNumber">pushNumber</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#reset">reset</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#.createCLTV">createCLTV</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#.createCSV">createCSV</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#.createMultisig">createMultisig</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#.createOpReturn">createOpReturn</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#.createP2PKH">createP2PKH</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#.createP2PKHFromPubkey">createP2PKHFromPubkey</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#.createP2PKHScriptSig">createP2PKHScriptSig</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#.createP2SH">createP2SH</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#.createP2SHScriptSig">createP2SHScriptSig</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#.createP2TR">createP2TR</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#.createP2WPKH">createP2WPKH</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#.createP2WPKHFromPubkey">createP2WPKHFromPubkey</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#.createP2WSH">createP2WSH</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#.detectType">detectType</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#.disassemble">disassemble</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#.parse">parse</a></li></ul></li><li><a href="ScriptError.html">ScriptError</a></li><li><a href="SighashCalculator.html">SighashCalculator</a><ul class='methods'><li data-type='method' style='display: none;'><a href="SighashCalculator.html#.calculate">calculate</a></li></ul></li><li><a href="SighashError.html">SighashError</a></li><li><a href="TaggedHash.html">TaggedHash</a><ul class='methods'><li data-type='method' style='display: none;'><a href="TaggedHash.html#.create">create</a></li></ul></li><li><a href="ThresholdSignatureError.html">ThresholdSignatureError</a></li><li><a href="ThresholdSignatureScheme.html">ThresholdSignatureScheme</a><ul class='methods'><li data-type='method' style='display: none;'><a href="ThresholdSignatureScheme.html#clear">clear</a></li><li data-type='method' style='display: none;'><a href="ThresholdSignatureScheme.html#generateEphemeralKeys">generateEphemeralKeys</a></li><li data-type='method' style='display: none;'><a href="ThresholdSignatureScheme.html#generateSharedPrivateKey">generateSharedPrivateKey</a></li><li data-type='method' style='display: none;'><a href="ThresholdSignatureScheme.html#getConfig">getConfig</a></li><li data-type='method' style='display: none;'><a href="ThresholdSignatureScheme.html#getNextEphemeralKey">getNextEphemeralKey</a></li><li data-type='method' style='display: none;'><a href="ThresholdSignatureScheme.html#getPublicKey">getPublicKey</a></li><li data-type='method' style='display: none;'><a href="ThresholdSignatureScheme.html#sign">sign</a></li><li data-type='method' style='display: none;'><a href="ThresholdSignatureScheme.html#signMessage">signMessage</a></li><li data-type='method' style='display: none;'><a href="ThresholdSignatureScheme.html#verify">verify</a></li></ul></li><li><a href="TransactionBuilder.html">TransactionBuilder</a><ul class='methods'><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#addInput">addInput</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#addOpReturn">addOpReturn</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#addOutput">addOutput</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#addWitness">addWitness</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#build">build</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#calculateFee">calculateFee</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#clone">clone</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#enableRBF">enableRBF</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#getTxid">getTxid</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#getVirtualSize">getVirtualSize</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#getWeight">getWeight</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#getWtxid">getWtxid</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#isFullySigned">isFullySigned</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#reset">reset</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#serialize">serialize</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#setInputSequence">setInputSequence</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#setLocktime">setLocktime</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#setVersion">setVersion</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#signAllInputs">signAllInputs</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#signInput">signInput</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#signInputs">signInputs</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#toHex">toHex</a></li></ul></li><li></li><li><a href="TransactionBuilderError.html">TransactionBuilderError</a></li><li><a href="TransactionParseError.html">TransactionParseError</a></li><li><a href="TransactionParser.html">TransactionParser</a><ul class='methods'><li data-type='method' style='display: none;'><a href="TransactionParser.html#.fromBuffer">fromBuffer</a></li><li data-type='method' style='display: none;'><a href="TransactionParser.html#.fromHex">fromHex</a></li><li data-type='method' style='display: none;'><a href="TransactionParser.html#.getTxid">getTxid</a></li><li data-type='method' style='display: none;'><a href="TransactionParser.html#.serializeWithoutWitness">serializeWithoutWitness</a></li></ul></li><li><a href="ValidationError.html">ValidationError</a></li><li><a href="WitnessBuilder.html">WitnessBuilder</a><ul class='methods'><li data-type='method' style='display: none;'><a href="WitnessBuilder.html#.buildControlBlock">buildControlBlock</a></li><li data-type='method' style='display: none;'><a href="WitnessBuilder.html#.buildP2TRKeyPath">buildP2TRKeyPath</a></li><li data-type='method' style='display: none;'><a href="WitnessBuilder.html#.buildP2TRScriptPath">buildP2TRScriptPath</a></li><li data-type='method' style='display: none;'><a href="WitnessBuilder.html#.buildP2WPKH">buildP2WPKH</a></li><li data-type='method' style='display: none;'><a href="WitnessBuilder.html#.buildP2WSH">buildP2WSH</a></li><li data-type='method' style='display: none;'><a href="WitnessBuilder.html#.buildP2WSHMultisig">buildP2WSHMultisig</a></li><li data-type='method' style='display: none;'><a href="WitnessBuilder.html#.calculateTapbranchHash">calculateTapbranchHash</a></li><li data-type='method' style='display: none;'><a href="WitnessBuilder.html#.calculateTapleafHash">calculateTapleafHash</a></li><li data-type='method' style='display: none;'><a href="WitnessBuilder.html#.calculateTaptweak">calculateTaptweak</a></li><li data-type='method' style='display: none;'><a href="WitnessBuilder.html#.parse">parse</a></li><li data-type='method' style='display: none;'><a href="WitnessBuilder.html#.serialize">serialize</a></li><li data-type='method' style='display: none;'><a href="WitnessBuilder.html#.validate">validate</a></li></ul></li><li><a href="WitnessError.html">WitnessError</a></li></ul><h3>Namespaces</h3><ul><li><a href="BECH32.html">BECH32</a><ul class='methods'><li data-type='method' style='display: none;'><a href="BECH32.html#.decode">decode</a></li><li 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href="BIP39.html#.mnemonicToEntropy">mnemonicToEntropy</a></li><li data-type='method' style='display: none;'><a href="BIP39.html#.validateChecksum">validateChecksum</a></li><li data-type='method' style='display: none;'><a href="BIP39.html#.validateMnemonic">validateMnemonic</a></li></ul></li><li><a href="ECDSA.html">ECDSA</a><ul class='methods'><li data-type='method' style='display: none;'><a href="ECDSA.html#.getPublicKey">getPublicKey</a></li><li data-type='method' style='display: none;'><a href="ECDSA.html#.recoverPublicKey">recoverPublicKey</a></li><li data-type='method' style='display: none;'><a href="ECDSA.html#.sign">sign</a></li><li data-type='method' style='display: none;'><a href="ECDSA.html#.signMessage">signMessage</a></li><li data-type='method' style='display: none;'><a href="ECDSA.html#.verify">verify</a></li><li data-type='method' style='display: none;'><a href="ECDSA.html#.verifyMessage">verifyMessage</a></li></ul></li></ul><h3>Global</h3><ul><li><a 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<div id="main">
<h1 class="page-title">src/transaction/parser.js</h1>
<section>
<article>
<pre class="prettyprint source linenums"><code>/**
* @fileoverview Transaction Parser
* @description Parse raw Bitcoin transaction hex back into structured objects
* @version 1.0.0
* @author yfbsei
* @license ISC
*/
/**
* Custom error for transaction parsing
* @class TransactionParseError
* @extends Error
*/
class TransactionParseError extends Error {
constructor(message, code, details = {}) {
super(message);
this.name = 'TransactionParseError';
this.code = code;
this.details = details;
}
}
/**
* Transaction Parser class
* @class TransactionParser
*/
class TransactionParser {
/**
* Parse transaction from hex string
* @param {string} hex - Raw transaction hex
* @returns {Object} Parsed transaction object
*/
static fromHex(hex) {
const buffer = Buffer.from(hex, 'hex');
return this.fromBuffer(buffer);
}
/**
* Parse transaction from buffer
* @param {Buffer} buffer - Raw transaction bytes
* @returns {Object} Parsed transaction object
*/
static fromBuffer(buffer) {
let offset = 0;
// Version (4 bytes, LE)
const version = buffer.readInt32LE(offset);
offset += 4;
// Check for witness marker
let hasWitness = false;
if (buffer[offset] === 0x00 && buffer[offset + 1] === 0x01) {
hasWitness = true;
offset += 2;
}
// Input count
const inputCountResult = this._readVarInt(buffer, offset);
const inputCount = inputCountResult.value;
offset = inputCountResult.offset;
// Parse inputs
const inputs = [];
for (let i = 0; i < inputCount; i++) {
const inputResult = this._parseInput(buffer, offset);
inputs.push(inputResult.input);
offset = inputResult.offset;
}
// Output count
const outputCountResult = this._readVarInt(buffer, offset);
const outputCount = outputCountResult.value;
offset = outputCountResult.offset;
// Parse outputs
const outputs = [];
for (let i = 0; i < outputCount; i++) {
const outputResult = this._parseOutput(buffer, offset);
outputs.push(outputResult.output);
offset = outputResult.offset;
}
// Parse witness data if present
const witnesses = [];
if (hasWitness) {
for (let i = 0; i < inputCount; i++) {
const witnessResult = this._parseWitness(buffer, offset);
witnesses.push(witnessResult.items);
offset = witnessResult.offset;
}
}
// Locktime (4 bytes, LE)
const locktime = buffer.readUInt32LE(offset);
offset += 4;
return {
version,
inputs,
outputs,
witnesses: hasWitness ? witnesses : [],
locktime,
hasWitness
};
}
/**
* Parse a single input
* @private
*/
static _parseInput(buffer, offset) {
// txid (32 bytes, reversed)
const txidBytes = buffer.slice(offset, offset + 32);
const txid = Buffer.from(txidBytes).reverse().toString('hex');
offset += 32;
// vout (4 bytes, LE)
const vout = buffer.readUInt32LE(offset);
offset += 4;
// scriptSig length
const scriptLenResult = this._readVarInt(buffer, offset);
const scriptLen = scriptLenResult.value;
offset = scriptLenResult.offset;
// scriptSig
const scriptSig = buffer.slice(offset, offset + scriptLen);
offset += scriptLen;
// sequence (4 bytes, LE)
const sequence = buffer.readUInt32LE(offset);
offset += 4;
return {
input: { txid, vout, scriptSig, sequence },
offset
};
}
/**
* Parse a single output
* @private
*/
static _parseOutput(buffer, offset) {
// value (8 bytes, LE)
const value = Number(buffer.readBigUInt64LE(offset));
offset += 8;
// scriptPubKey length
const scriptLenResult = this._readVarInt(buffer, offset);
const scriptLen = scriptLenResult.value;
offset = scriptLenResult.offset;
// scriptPubKey
const scriptPubKey = buffer.slice(offset, offset + scriptLen);
offset += scriptLen;
return {
output: { value, scriptPubKey },
offset
};
}
/**
* Parse witness data
* @private
*/
static _parseWitness(buffer, offset) {
const countResult = this._readVarInt(buffer, offset);
const count = countResult.value;
offset = countResult.offset;
const items = [];
for (let i = 0; i < count; i++) {
const lenResult = this._readVarInt(buffer, offset);
const len = lenResult.value;
offset = lenResult.offset;
items.push(buffer.slice(offset, offset + len));
offset += len;
}
return { items, offset };
}
/**
* Read variable-length integer
* @private
*/
static _readVarInt(buffer, offset) {
const first = buffer[offset];
if (first < 0xfd) {
return { value: first, offset: offset + 1 };
} else if (first === 0xfd) {
return { value: buffer.readUInt16LE(offset + 1), offset: offset + 3 };
} else if (first === 0xfe) {
return { value: buffer.readUInt32LE(offset + 1), offset: offset + 5 };
} else {
return { value: Number(buffer.readBigUInt64LE(offset + 1)), offset: offset + 9 };
}
}
/**
* Get transaction ID from raw hex
* @param {string} hex - Raw transaction hex
* @returns {string} Transaction ID
*/
static getTxid(hex) {
const { createHash } = require('node:crypto');
const buffer = Buffer.from(hex, 'hex');
// Remove witness data for txid calculation
const tx = this.fromBuffer(buffer);
const noWitnessHex = this.serializeWithoutWitness(tx);
const hash = createHash('sha256')
.update(createHash('sha256').update(noWitnessHex).digest())
.digest();
return hash.reverse().toString('hex');
}
/**
* Serialize transaction without witness (for txid)
* @param {Object} tx - Parsed transaction
* @returns {Buffer} Serialized bytes
*/
static serializeWithoutWitness(tx) {
const parts = [];
// Version
const version = Buffer.alloc(4);
version.writeInt32LE(tx.version, 0);
parts.push(version);
// Inputs
parts.push(this._encodeVarInt(tx.inputs.length));
for (const input of tx.inputs) {
parts.push(Buffer.from(input.txid, 'hex').reverse());
const vout = Buffer.alloc(4);
vout.writeUInt32LE(input.vout, 0);
parts.push(vout);
const scriptSig = Buffer.isBuffer(input.scriptSig) ? input.scriptSig : Buffer.from(input.scriptSig, 'hex');
parts.push(this._encodeVarInt(scriptSig.length));
parts.push(scriptSig);
const seq = Buffer.alloc(4);
seq.writeUInt32LE(input.sequence, 0);
parts.push(seq);
}
// Outputs
parts.push(this._encodeVarInt(tx.outputs.length));
for (const output of tx.outputs) {
const value = Buffer.alloc(8);
value.writeBigUInt64LE(BigInt(output.value), 0);
parts.push(value);
const script = Buffer.isBuffer(output.scriptPubKey) ? output.scriptPubKey : Buffer.from(output.scriptPubKey, 'hex');
parts.push(this._encodeVarInt(script.length));
parts.push(script);
}
// Locktime
const locktime = Buffer.alloc(4);
locktime.writeUInt32LE(tx.locktime, 0);
parts.push(locktime);
return Buffer.concat(parts);
}
/**
* Encode variable-length integer
* @private
*/
static _encodeVarInt(n) {
if (n < 0xfd) {
return Buffer.from([n]);
} else if (n <= 0xffff) {
const buf = Buffer.alloc(3);
buf[0] = 0xfd;
buf.writeUInt16LE(n, 1);
return buf;
} else if (n <= 0xffffffff) {
const buf = Buffer.alloc(5);
buf[0] = 0xfe;
buf.writeUInt32LE(n, 1);
return buf;
} else {
const buf = Buffer.alloc(9);
buf[0] = 0xff;
buf.writeBigUInt64LE(BigInt(n), 1);
return buf;
}
}
}
export { TransactionParser, TransactionParseError };
export default TransactionParser;
</code></pre>
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