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
432 lines (336 loc) • 45.1 kB
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<title>src/bip/bip32/derive.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 href="global.html#FEATURES">FEATURES</a></li><li><a href="global.html#G">G</a></li><li><a href="global.html#HARDENED_OFFSET">HARDENED_OFFSET</a></li><li><a href="global.html#INVSS">INVSS</a></li><li><a href="global.html#LIBRARY_INFO">LIBRARY_INFO</a></li><li><a href="global.html#NETWORKS">NETWORKS</a></li><li><a href="global.html#NETWORK_VERSIONS">NETWORK_VERSIONS</a></li><li><a href="global.html#OPCODES">OPCODES</a></li><li><a href="global.html#PROSS">PROSS</a></li><li><a href="global.html#SECURITY_CONSTANTS">SECURITY_CONSTANTS</a></li><li><a href="global.html#SIGHASH">SIGHASH</a></li><li><a href="global.html#TAPROOT_CONSTANTS">TAPROOT_CONSTANTS</a></li><li><a href="global.html#THRESHOLD_CONSTANTS">THRESHOLD_CONSTANTS</a></li><li><a href="global.html#TRANSACTION_CONSTANTS">TRANSACTION_CONSTANTS</a></li><li><a href="global.html#TX_CONSTANTS">TX_CONSTANTS</a></li><li><a href="global.html#b58decode">b58decode</a></li><li><a href="global.html#b58encode">b58encode</a></li><li><a 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<div id="main">
<h1 class="page-title">src/bip/bip32/derive.js</h1>
<section>
<article>
<pre class="prettyprint source linenums"><code>/**
* @fileoverview BIP32 child key derivation
* @version 1.0.0
* @author yfbsei
* @license ISC
*/
import { createHmac, createHash } from 'node:crypto';
import { secp256k1 } from '@noble/curves/secp256k1';
import BN from 'bn.js';
import { b58encode, b58decode } from '../../encoding/base58.js';
import rmd160 from '../../core/crypto/hash/ripemd160.js';
import {
CRYPTO_CONSTANTS,
BIP32_CONSTANTS,
NETWORK_VERSIONS,
validateAndGetNetwork
} from '../../core/constants.js';
/**
* Offset for hardened key derivation (2^31)
* @constant {number}
*/
const HARDENED_OFFSET = 0x80000000;
/**
* Validate a Base58Check-encoded extended key
* @param {string} key - Extended key to validate
* @param {string|null} [expectedPrefix=null] - Expected key prefix
* @returns {boolean} True if valid
* @throws {Error} If key is invalid
*/
function validateExtendedKey(key, expectedPrefix = null) {
if (!key || typeof key !== 'string') {
throw new Error('Extended key must be a non-empty string');
}
const base58Regex = /^[1-9A-HJ-NP-Za-km-z]+$/;
if (!base58Regex.test(key)) {
throw new Error('Extended key contains invalid Base58 characters');
}
if (key.length !== 111) {
throw new Error(`Invalid extended key length: expected 111, got ${key.length}`);
}
if (expectedPrefix && !key.startsWith(expectedPrefix)) {
throw new Error(`Extended key has wrong prefix: expected ${expectedPrefix}`);
}
return true;
}
/**
* Validate a BIP32 derivation path
* @param {string} path - Derivation path (e.g., "m/44'/0'/0'/0/0")
* @returns {boolean} True if valid
* @throws {Error} If path format is invalid
*/
function validateDerivationPath(path) {
if (!path || typeof path !== 'string') {
throw new Error('Derivation path must be a non-empty string');
}
const pathRegex = /^m(\/\d+'?)*$/;
if (!pathRegex.test(path)) {
throw new Error(`Invalid derivation path format: ${path}`);
}
return true;
}
/**
* Validate a derived child key against curve parameters
* @param {BN} childKeyBN - Child key as big number
* @returns {Buffer} 32-byte formatted key
* @throws {Error} If key is zero or >= curve order
*/
function validateChildKey(childKeyBN) {
const curveOrder = new BN(CRYPTO_CONSTANTS.SECP256K1_ORDER, 'hex');
if (childKeyBN.isZero()) {
throw new Error('Invalid child key: key is zero');
}
if (childKeyBN.gte(curveOrder)) {
throw new Error('Invalid child key: key >= curve order');
}
const formattedKey = childKeyBN.toBuffer('be', 32);
if (formattedKey.length !== 32) {
throw new Error(`Key serialization failed: expected 32 bytes, got ${formattedKey.length}`);
}
return formattedKey;
}
/**
* Decode a Base58Check-encoded extended key
* @param {string} extendedKey - Extended key (xprv/xpub/tprv/tpub)
* @returns {Object} Decoded key information
* @throws {Error} If key format is invalid
*/
function decodeExtendedKey(extendedKey) {
validateExtendedKey(extendedKey);
const decoded = b58decode(extendedKey);
if (decoded.length !== BIP32_CONSTANTS.EXTENDED_KEY_LENGTH) {
throw new Error(`Invalid decoded key length: ${decoded.length}`);
}
const version = decoded.slice(0, 4);
const depth = decoded.readUInt8(4);
const parentFingerprint = decoded.slice(5, 9);
const childIndex = decoded.readUInt32BE(9);
const chainCode = decoded.slice(13, 45);
const keyData = decoded.slice(45, 78);
let isPrivate = false;
let network = 'main';
if (version.equals(NETWORK_VERSIONS.main.versions.EXTENDED_PRIVATE_KEY)) {
isPrivate = true;
network = 'main';
} else if (version.equals(NETWORK_VERSIONS.main.versions.EXTENDED_PUBLIC_KEY)) {
isPrivate = false;
network = 'main';
} else if (version.equals(NETWORK_VERSIONS.test.versions.EXTENDED_PRIVATE_KEY)) {
isPrivate = true;
network = 'test';
} else if (version.equals(NETWORK_VERSIONS.test.versions.EXTENDED_PUBLIC_KEY)) {
isPrivate = false;
network = 'test';
} else {
throw new Error('Unknown extended key version');
}
let privateKey = null;
let publicKey = null;
if (isPrivate) {
if (keyData[0] !== 0x00) {
throw new Error('Invalid private key padding');
}
privateKey = keyData.slice(1);
publicKey = Buffer.from(secp256k1.getPublicKey(privateKey, true));
} else {
publicKey = keyData;
}
return {
version,
depth,
parentFingerprint,
childIndex,
chainCode,
privateKey,
publicKey,
isPrivate,
network
};
}
/**
* Encode key information to a Base58Check extended key
* @param {Object} keyInfo - Key information object
* @returns {string} Base58Check-encoded extended key
*/
function encodeExtendedKey(keyInfo) {
const networkConfig = NETWORK_VERSIONS[keyInfo.network];
const buffer = Buffer.alloc(BIP32_CONSTANTS.EXTENDED_KEY_LENGTH);
let offset = 0;
const versionBytes = keyInfo.isPrivate
? networkConfig.versions.EXTENDED_PRIVATE_KEY
: networkConfig.versions.EXTENDED_PUBLIC_KEY;
versionBytes.copy(buffer, offset);
offset += 4;
buffer.writeUInt8(keyInfo.depth, offset);
offset += 1;
keyInfo.parentFingerprint.copy(buffer, offset);
offset += 4;
buffer.writeUInt32BE(keyInfo.childIndex, offset);
offset += 4;
keyInfo.chainCode.copy(buffer, offset);
offset += 32;
if (keyInfo.isPrivate) {
buffer.writeUInt8(0x00, offset);
offset += 1;
keyInfo.privateKey.copy(buffer, offset);
} else {
keyInfo.publicKey.copy(buffer, offset);
}
return b58encode(buffer);
}
/**
* Get the fingerprint of a public key (first 4 bytes of HASH160)
* @param {Buffer} publicKey - Compressed public key
* @returns {Buffer} 4-byte fingerprint
*/
function getFingerprint(publicKey) {
const sha256Hash = createHash('sha256').update(publicKey).digest();
const hash160 = rmd160(sha256Hash);
return hash160.slice(0, 4);
}
/**
* Derive a child key from a parent key
* @param {Object} parentKeyInfo - Parent key information
* @param {number} index - Child index (0-2147483647)
* @param {boolean} [hardened=false] - Whether to use hardened derivation
* @returns {Object} Child key information
* @throws {Error} If hardened derivation attempted on public key
*/
function deriveChildKey(parentKeyInfo, index, hardened = false) {
const actualIndex = hardened ? index + HARDENED_OFFSET : index;
if (hardened && !parentKeyInfo.isPrivate) {
throw new Error('Cannot derive hardened child from public key');
}
let data;
if (hardened) {
data = Buffer.concat([
Buffer.from([0x00]),
parentKeyInfo.privateKey,
Buffer.alloc(4)
]);
data.writeUInt32BE(actualIndex, 33);
} else {
data = Buffer.concat([
parentKeyInfo.publicKey,
Buffer.alloc(4)
]);
data.writeUInt32BE(actualIndex, 33);
}
const hmac = createHmac('sha512', parentKeyInfo.chainCode);
const hmacResult = hmac.update(data).digest();
const derivedKeyMaterial = hmacResult.slice(0, 32);
const childChainCode = hmacResult.slice(32, 64);
let childPrivateKey = null;
let childPublicKey = null;
if (parentKeyInfo.isPrivate) {
const parentKeyBN = new BN(parentKeyInfo.privateKey);
const derivedBN = new BN(derivedKeyMaterial);
const curveOrder = new BN(CRYPTO_CONSTANTS.SECP256K1_ORDER, 'hex');
const childKeyBN = parentKeyBN.add(derivedBN).mod(curveOrder);
childPrivateKey = validateChildKey(childKeyBN);
childPublicKey = Buffer.from(secp256k1.getPublicKey(childPrivateKey, true));
} else {
const parentPoint = secp256k1.ProjectivePoint.fromHex(parentKeyInfo.publicKey);
const derivedPoint = secp256k1.ProjectivePoint.fromPrivateKey(derivedKeyMaterial);
const childPoint = parentPoint.add(derivedPoint);
childPublicKey = Buffer.from(childPoint.toRawBytes(true));
}
const parentFingerprint = getFingerprint(parentKeyInfo.publicKey);
return {
version: parentKeyInfo.version,
depth: parentKeyInfo.depth + 1,
parentFingerprint,
childIndex: actualIndex,
chainCode: childChainCode,
privateKey: childPrivateKey,
publicKey: childPublicKey,
isPrivate: parentKeyInfo.isPrivate,
network: parentKeyInfo.network
};
}
/**
* Derive a child key at a given path from an extended key
* @param {string} path - BIP32 derivation path (e.g., "m/44'/0'/0'/0/0")
* @param {string} extendedKey - Parent extended key (xprv/xpub)
* @returns {Object} Derived key information
* @throws {Error} If path or key is invalid
*/
function derive(path, extendedKey) {
validateDerivationPath(path);
validateExtendedKey(extendedKey);
let currentKey = decodeExtendedKey(extendedKey);
const segments = path.split('/').slice(1);
for (const segment of segments) {
const hardened = segment.endsWith("'");
const indexStr = hardened ? segment.slice(0, -1) : segment;
const index = parseInt(indexStr, 10);
if (isNaN(index) || index < 0) {
throw new Error(`Invalid path segment: ${segment}`);
}
if (currentKey.depth >= BIP32_CONSTANTS.MAX_DERIVATION_DEPTH) {
throw new Error(`Maximum derivation depth exceeded: ${currentKey.depth}`);
}
currentKey = deriveChildKey(currentKey, index, hardened);
}
const extendedPrivateKey = currentKey.isPrivate ? encodeExtendedKey(currentKey) : null;
const publicKeyInfo = { ...currentKey, isPrivate: false, privateKey: null };
const extendedPublicKey = encodeExtendedKey(publicKeyInfo);
return {
extendedPrivateKey,
extendedPublicKey,
privateKey: currentKey.privateKey,
publicKey: currentKey.publicKey,
chainCode: currentKey.chainCode,
depth: currentKey.depth,
index: currentKey.childIndex,
network: currentKey.network
};
}
export {
derive,
deriveChildKey,
decodeExtendedKey,
encodeExtendedKey,
validateDerivationPath,
validateExtendedKey,
getFingerprint,
HARDENED_OFFSET
};
export default { derive };
</code></pre>
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