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
418 lines (326 loc) • 44.1 kB
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<title>src/core/taproot/tapscript-interpreter.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 data-type='method' style='display: none;'><a href="BECH32.html#.getAddressType">getAddressType</a></li><li data-type='method' style='display: none;'><a href="BECH32.html#.getPrefix">getPrefix</a></li><li data-type='method' style='display: none;'><a href="BECH32.html#.to_P2TR">to_P2TR</a></li><li data-type='method' style='display: none;'><a href="BECH32.html#.to_P2WPKH">to_P2WPKH</a></li><li data-type='method' style='display: none;'><a href="BECH32.html#.to_P2WSH">to_P2WSH</a></li><li data-type='method' style='display: none;'><a href="BECH32.html#.validate">validate</a></li></ul></li><li><a href="BIP39.html">BIP39</a><ul class='methods'><li data-type='method' style='display: none;'><a href="BIP39.html#.deriveSeed">deriveSeed</a></li><li data-type='method' style='display: none;'><a href="BIP39.html#.generateMnemonic">generateMnemonic</a></li><li data-type='method' style='display: none;'><a href="BIP39.html#.getWordList">getWordList</a></li><li data-type='method' style='display: none;'><a 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 href="global.html#ADDRESS_FORMATS">ADDRESS_FORMATS</a></li><li><a href="global.html#ADDRESS_TYPE_PURPOSE">ADDRESS_TYPE_PURPOSE</a></li><li><a href="global.html#ADDSS">ADDSS</a></li><li><a href="global.html#BECH32_PREFIXES">BECH32_PREFIXES</a></li><li><a href="global.html#BIP322_CONSTANTS">BIP322_CONSTANTS</a></li><li><a href="global.html#BIP32_CONSTANTS">BIP32_CONSTANTS</a></li><li><a href="global.html#BIP340_CONSTANTS">BIP340_CONSTANTS</a></li><li><a href="global.html#BIP39_CONSTANTS">BIP39_CONSTANTS</a></li><li><a href="global.html#BIP44_CONSTANTS">BIP44_CONSTANTS</a></li><li><a href="global.html#BIP49_CONSTANTS">BIP49_CONSTANTS</a></li><li><a href="global.html#BIP_COMPLIANCE">BIP_COMPLIANCE</a></li><li><a href="global.html#BIP_PURPOSES">BIP_PURPOSES</a></li><li><a href="global.html#CRYPTO_CONSTANTS">CRYPTO_CONSTANTS</a></li><li><a href="global.html#CURVE_ORDER">CURVE_ORDER</a></li><li><a href="global.html#ENCODING_CONSTANTS">ENCODING_CONSTANTS</a></li><li><a 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<div id="main">
<h1 class="page-title">src/core/taproot/tapscript-interpreter.js</h1>
<section>
<article>
<pre class="prettyprint source linenums"><code>/**
* @fileoverview Tapscript interpreter implementation following BIP342
* @version 1.0.0
* @author yfbsei
* @license ISC
*/
import Schnorr from '../crypto/signatures/schnorr-BIP340.js';
class TapscriptError extends Error {
constructor(message, code, details = {}) {
super(message);
this.name = 'TapscriptError';
this.code = code;
this.details = details;
}
}
const TAPSCRIPT_CONSTANTS = {
MAX_STACK_SIZE: 1000,
MAX_SCRIPT_SIZE: 10000,
MAX_ELEMENT_SIZE: 520,
MAX_OPS_PER_SCRIPT: 201,
BASE_SIGOPS_BUDGET: 50,
SIGOPS_PER_WITNESS_UNIT: 1,
LEAF_VERSION_TAPSCRIPT: 0xc0,
MAX_SCRIPT_NUM_SIZE: 4,
MAX_PUBKEYS_PER_MULTISIG: 20
};
const OPCODES = {
OP_0: 0x00,
OP_PUSHDATA1: 0x4c,
OP_PUSHDATA2: 0x4d,
OP_PUSHDATA4: 0x4e,
OP_1NEGATE: 0x4f,
OP_1: 0x51,
OP_16: 0x60,
OP_NOP: 0x61,
OP_IF: 0x63,
OP_NOTIF: 0x64,
OP_ELSE: 0x67,
OP_ENDIF: 0x68,
OP_VERIFY: 0x69,
OP_RETURN: 0x6a,
OP_DUP: 0x76,
OP_EQUAL: 0x87,
OP_EQUALVERIFY: 0x88,
OP_HASH160: 0xa9,
OP_HASH256: 0xaa,
OP_CHECKSIG: 0xac,
OP_CHECKSIGVERIFY: 0xad,
OP_CHECKMULTISIG: 0xae,
OP_CHECKSIGADD: 0xba,
OP_SUCCESS_START: 0x50,
OP_SUCCESS_END: 0xfe
};
class ScriptNum {
static decode(buffer) {
if (buffer.length === 0) return 0;
if (buffer.length > TAPSCRIPT_CONSTANTS.MAX_SCRIPT_NUM_SIZE) {
throw new TapscriptError('Script number too large', 'NUMBER_TOO_LARGE');
}
let result = 0;
for (let i = 0; i < buffer.length; i++) {
result |= buffer[i] << (8 * i);
}
if (buffer[buffer.length - 1] & 0x80) {
result = -(result & ~(0x80 << (8 * (buffer.length - 1))));
}
return result;
}
static encode(num) {
if (num === 0) return Buffer.alloc(0);
const negative = num < 0;
let absValue = Math.abs(num);
const result = [];
while (absValue > 0) {
result.push(absValue & 0xff);
absValue >>= 8;
}
if (result[result.length - 1] & 0x80) {
result.push(negative ? 0x80 : 0x00);
} else if (negative) {
result[result.length - 1] |= 0x80;
}
return Buffer.from(result);
}
}
class TapscriptInterpreter {
constructor() {
this.schnorrValidator = new Schnorr();
}
async execute(script, witness, context = {}) {
const executionContext = {
stack: [],
altStack: [],
opCount: 0,
sigOpsCount: 0,
sigOpsBudget: this._calculateSigOpsBudget(witness),
conditionStack: [],
script: Buffer.isBuffer(script) ? script : Buffer.from(script),
witness: witness || [],
...context
};
for (const item of executionContext.witness) {
executionContext.stack.push(item);
}
let offset = 0;
while (offset < executionContext.script.length) {
const opcode = executionContext.script[offset];
offset++;
if (this._isOpSuccess(opcode)) {
return { success: true, reason: 'OP_SUCCESS' };
}
if (opcode >= 0x01 && opcode <= 0x4b) {
const data = executionContext.script.slice(offset, offset + opcode);
offset += opcode;
executionContext.stack.push(data);
continue;
}
await this._executeOpcode(opcode, executionContext, offset);
this._checkLimits(executionContext);
}
return this._evaluateResult(executionContext);
}
_calculateSigOpsBudget(witness) {
const witnessSize = witness.reduce((sum, item) => sum + item.length, 0);
return TAPSCRIPT_CONSTANTS.BASE_SIGOPS_BUDGET +
Math.floor(witnessSize / TAPSCRIPT_CONSTANTS.SIGOPS_PER_WITNESS_UNIT);
}
_isOpSuccess(opcode) {
if (opcode === 0x50) return true;
if (opcode === 0x62) return true;
if (opcode === 0x89) return true;
if (opcode === 0x8a) return true;
if (opcode >= 0x8d && opcode <= 0x8e) return true;
if (opcode >= 0x95 && opcode <= 0x99) return true;
if (opcode >= 0xbb && opcode <= 0xfe) return true;
return false;
}
async _executeOpcode(opcode, context) {
context.opCount++;
switch (opcode) {
case OPCODES.OP_0:
context.stack.push(Buffer.alloc(0));
break;
case OPCODES.OP_DUP:
if (context.stack.length < 1) {
throw new TapscriptError('Stack underflow', 'STACK_UNDERFLOW');
}
context.stack.push(Buffer.from(context.stack[context.stack.length - 1]));
break;
case OPCODES.OP_EQUAL:
this._executeEqual(context);
break;
case OPCODES.OP_EQUALVERIFY:
this._executeEqual(context);
if (!this._isTruthy(context.stack.pop())) {
throw new TapscriptError('EQUALVERIFY failed', 'VERIFY_FAILED');
}
break;
case OPCODES.OP_VERIFY:
if (context.stack.length < 1) {
throw new TapscriptError('Stack underflow', 'STACK_UNDERFLOW');
}
if (!this._isTruthy(context.stack.pop())) {
throw new TapscriptError('VERIFY failed', 'VERIFY_FAILED');
}
break;
case OPCODES.OP_CHECKSIG:
await this._executeChecksig(context, context.sigHash);
break;
case OPCODES.OP_CHECKSIGVERIFY:
await this._executeChecksig(context, context.sigHash);
if (!this._isTruthy(context.stack.pop())) {
throw new TapscriptError('CHECKSIGVERIFY failed', 'VERIFY_FAILED');
}
break;
case OPCODES.OP_CHECKSIGADD:
await this._executeChecksigAdd(context, context.sigHash);
break;
default:
if (opcode >= OPCODES.OP_1 && opcode <= OPCODES.OP_16) {
context.stack.push(Buffer.from([opcode - OPCODES.OP_1 + 1]));
}
}
}
_executeEqual(context) {
if (context.stack.length < 2) {
throw new TapscriptError('Stack underflow', 'STACK_UNDERFLOW');
}
const b = context.stack.pop();
const a = context.stack.pop();
context.stack.push(a.equals(b) ? Buffer.from([0x01]) : Buffer.alloc(0));
}
async _executeChecksig(context, sigHash) {
if (context.stack.length < 2) {
throw new TapscriptError('Stack underflow', 'STACK_UNDERFLOW');
}
const pubkey = context.stack.pop();
const signature = context.stack.pop();
context.sigOpsCount++;
this._checkBudgets(context);
if (signature.length === 0) {
context.stack.push(Buffer.alloc(0));
return;
}
if (signature.length !== 64 || pubkey.length !== 32) {
context.stack.push(Buffer.alloc(0));
return;
}
try {
const isValid = await this.schnorrValidator.verify(signature, sigHash, pubkey);
context.stack.push(isValid ? Buffer.from([0x01]) : Buffer.alloc(0));
} catch {
context.stack.push(Buffer.alloc(0));
}
}
async _executeChecksigAdd(context, sigHash) {
if (context.stack.length < 3) {
throw new TapscriptError('Stack underflow', 'STACK_UNDERFLOW');
}
const pubkey = context.stack.pop();
const num = context.stack.pop();
const signature = context.stack.pop();
context.sigOpsCount++;
this._checkBudgets(context);
let n = ScriptNum.decode(num);
let isValid = false;
if (signature.length !== 0 && signature.length === 64 && pubkey.length === 32) {
try {
isValid = await this.schnorrValidator.verify(signature, sigHash, pubkey);
} catch {
isValid = false;
}
}
const result = n + (isValid ? 1 : 0);
context.stack.push(ScriptNum.encode(result));
}
_checkLimits(context) {
if (context.stack.length > TAPSCRIPT_CONSTANTS.MAX_STACK_SIZE) {
throw new TapscriptError('Stack size exceeded', 'STACK_OVERFLOW');
}
if (context.opCount > TAPSCRIPT_CONSTANTS.MAX_OPS_PER_SCRIPT) {
throw new TapscriptError('Op count exceeded', 'OP_COUNT_EXCEEDED');
}
}
_checkBudgets(context) {
if (context.sigOpsCount > context.sigOpsBudget) {
throw new TapscriptError('Signature operations budget exceeded', 'SIGOPS_EXCEEDED');
}
}
_isTruthy(value) {
if (!value || value.length === 0) return false;
for (let i = 0; i < value.length; i++) {
if (value[i] !== 0) {
if (i === value.length - 1 && value[i] === 0x80) continue;
return true;
}
}
return false;
}
_evaluateResult(context) {
if (context.stack.length === 0) {
return { success: false, reason: 'Empty stack' };
}
const topElement = context.stack[context.stack.length - 1];
return {
success: this._isTruthy(topElement),
stack: context.stack,
opCount: context.opCount,
sigOpsCount: context.sigOpsCount
};
}
}
export {
TapscriptInterpreter,
TapscriptError,
TAPSCRIPT_CONSTANTS,
OPCODES,
ScriptNum
};
</code></pre>
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