@bitgo/utxo-lib
Version:
Client-side Bitcoin JavaScript library
262 lines • 43.1 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.getSignatureVerifications = getSignatureVerifications;
exports.verifySignature = verifySignature;
exports.getSignaturesWithPublicKeys = getSignaturesWithPublicKeys;
exports.verifySignatureWithPublicKeys = verifySignatureWithPublicKeys;
exports.verifySignatureWithPublicKey = verifySignatureWithPublicKey;
exports.getDefaultSigHash = getDefaultSigHash;
exports.signInputP2shP2pk = signInputP2shP2pk;
exports.signInput2Of3 = signInput2Of3;
const bitcoinjs_lib_1 = require("bitcoinjs-lib");
const UtxoTransaction_1 = require("./UtxoTransaction");
const outputScripts_1 = require("./outputScripts");
const networks_1 = require("../networks");
const secp256k1_1 = require("@bitgo/secp256k1");
const parseInput_1 = require("./parseInput");
const taproot_1 = require("../taproot");
/**
* @deprecated - use {@see verifySignaturesWithPublicKeys} instead
* Get signature verifications for multsig transaction
* @param transaction
* @param inputIndex
* @param amount - must be set for segwit transactions and BIP143 transactions
* @param verificationSettings
* @param prevOutputs - must be set for p2tr and p2trMusig2 transactions
* @returns SignatureVerification[] - in order of parsed non-empty signatures
*/
function getSignatureVerifications(transaction, inputIndex, amount, verificationSettings = {}, prevOutputs) {
/* istanbul ignore next */
if (!transaction.ins) {
throw new Error(`invalid transaction`);
}
const input = transaction.ins[inputIndex];
/* istanbul ignore next */
if (!input) {
throw new Error(`no input at index ${inputIndex}`);
}
if ((!input.script || input.script.length === 0) && input.witness.length === 0) {
// Unsigned input: no signatures.
return [];
}
const parsedScript = (0, parseInput_1.parseSignatureScript2Of3)(input);
if (parsedScript.scriptType === 'taprootKeyPathSpend' || parsedScript.scriptType === 'taprootScriptPathSpend') {
if (parsedScript.scriptType === 'taprootKeyPathSpend' &&
(verificationSettings.signatureIndex || verificationSettings.publicKey)) {
throw new Error(`signatureIndex and publicKey parameters not supported for taprootKeyPathSpend`);
}
if (verificationSettings.signatureIndex !== undefined) {
throw new Error(`signatureIndex parameter not supported for taprootScriptPathSpend`);
}
if (!prevOutputs) {
throw new Error(`prevOutputs not set`);
}
if (prevOutputs.length !== transaction.ins.length) {
throw new Error(`prevOutputs length ${prevOutputs.length}, expected ${transaction.ins.length}`);
}
}
if (parsedScript.scriptType !== 'taprootKeyPathSpend' &&
parsedScript.scriptType !== 'taprootScriptPathSpend' &&
prevOutputs) {
const prevOutScript = prevOutputs[inputIndex].script;
const output = (0, outputScripts_1.getOutputScript)(parsedScript.scriptType, parsedScript.pubScript);
if (!prevOutScript.equals(output)) {
throw new Error(`prevout script ${prevOutScript.toString('hex')} does not match computed script ${output.toString('hex')}`);
}
}
let publicKeys;
if (parsedScript.scriptType === 'taprootKeyPathSpend') {
if (!prevOutputs) {
throw new Error(`prevOutputs not set`);
}
publicKeys = [(0, taproot_1.getTaprootOutputKey)(prevOutputs[inputIndex].script)];
}
else {
publicKeys = parsedScript.publicKeys.filter((buf) => verificationSettings.publicKey === undefined ||
verificationSettings.publicKey.equals(buf) ||
verificationSettings.publicKey.slice(1).equals(buf));
}
const signatures = parsedScript.signatures
.filter((s) => s && s.length)
.filter((s, i) => verificationSettings.signatureIndex === undefined || verificationSettings.signatureIndex === i);
return signatures.map((signatureBuffer) => {
if (signatureBuffer === 0 || signatureBuffer.length === 0) {
return { signedBy: undefined, signature: undefined };
}
let hashType = bitcoinjs_lib_1.Transaction.SIGHASH_DEFAULT;
if (signatureBuffer.length === 65) {
hashType = signatureBuffer[signatureBuffer.length - 1];
signatureBuffer = signatureBuffer.slice(0, -1);
}
if (parsedScript.scriptType === 'taprootScriptPathSpend') {
if (!prevOutputs) {
throw new Error(`prevOutputs not set`);
}
const { controlBlock, pubScript } = parsedScript;
const leafHash = bitcoinjs_lib_1.taproot.getTapleafHash(secp256k1_1.ecc, controlBlock, pubScript);
const signatureHash = transaction.hashForWitnessV1(inputIndex, prevOutputs.map(({ script }) => script), prevOutputs.map(({ value }) => value), hashType, leafHash);
const signedBy = publicKeys.filter((k) => Buffer.isBuffer(signatureBuffer) && secp256k1_1.ecc.verifySchnorr(signatureHash, k, signatureBuffer));
if (signedBy.length === 0) {
return { signedBy: undefined, signature: undefined };
}
if (signedBy.length === 1) {
return { signedBy: signedBy[0], signature: signatureBuffer };
}
throw new Error(`illegal state: signed by multiple public keys`);
}
else if (parsedScript.scriptType === 'taprootKeyPathSpend') {
if (!prevOutputs) {
throw new Error(`prevOutputs not set`);
}
const signatureHash = transaction.hashForWitnessV1(inputIndex, prevOutputs.map(({ script }) => script), prevOutputs.map(({ value }) => value), hashType);
const result = secp256k1_1.ecc.verifySchnorr(signatureHash, publicKeys[0], signatureBuffer);
return result
? { signedBy: publicKeys[0], signature: signatureBuffer }
: { signedBy: undefined, signature: undefined };
}
else {
// slice the last byte from the signature hash input because it's the hash type
const { signature, hashType } = bitcoinjs_lib_1.ScriptSignature.decode(signatureBuffer);
const transactionHash = parsedScript.scriptType === 'p2shP2wsh' || parsedScript.scriptType === 'p2wsh'
? transaction.hashForWitnessV0(inputIndex, parsedScript.pubScript, amount, hashType)
: transaction.hashForSignatureByNetwork(inputIndex, parsedScript.pubScript, amount, hashType);
const signedBy = publicKeys.filter((publicKey) => secp256k1_1.ecc.verify(transactionHash, publicKey, signature,
/*
Strict verification (require lower-S value), as required by BIP-0146
https://github.com/bitcoin/bips/blob/master/bip-0146.mediawiki
https://github.com/bitcoin-core/secp256k1/blob/ac83be33/include/secp256k1.h#L478-L508
https://github.com/bitcoinjs/tiny-secp256k1/blob/v1.1.6/js.js#L231-L233
*/
true));
if (signedBy.length === 0) {
return { signedBy: undefined, signature: undefined };
}
if (signedBy.length === 1) {
return { signedBy: signedBy[0], signature: signatureBuffer };
}
throw new Error(`illegal state: signed by multiple public keys`);
}
});
}
/**
* @deprecated use {@see verifySignatureWithPublicKeys} instead
* @param transaction
* @param inputIndex
* @param amount
* @param verificationSettings - if publicKey is specified, returns true iff any signature is signed by publicKey.
* @param prevOutputs - must be set for p2tr transactions
*/
function verifySignature(transaction, inputIndex, amount, verificationSettings = {}, prevOutputs) {
const signatureVerifications = getSignatureVerifications(transaction, inputIndex, amount, verificationSettings, prevOutputs).filter((v) =>
// If no publicKey is set in verificationSettings, all signatures must be valid.
// Otherwise, a single valid signature by the specified pubkey is sufficient.
verificationSettings.publicKey === undefined ||
(v.signedBy !== undefined &&
(verificationSettings.publicKey.equals(v.signedBy) ||
verificationSettings.publicKey.slice(1).equals(v.signedBy))));
return signatureVerifications.length > 0 && signatureVerifications.every((v) => v.signedBy !== undefined);
}
/**
* @param v
* @param publicKey
* @return true iff signature is by publicKey (or xonly variant of publicKey)
*/
function isSignatureByPublicKey(v, publicKey) {
return (!!v.signedBy &&
(v.signedBy.equals(publicKey) ||
/* for p2tr signatures, we pass the pubkey in 33-byte format recover it from the signature in 32-byte format */
(publicKey.length === 33 && isSignatureByPublicKey(v, publicKey.slice(1)))));
}
/**
* @param transaction
* @param inputIndex
* @param prevOutputs
* @param publicKeys
* @return array with signature corresponding to n-th key, undefined if no match found
*/
function getSignaturesWithPublicKeys(transaction, inputIndex, prevOutputs, publicKeys) {
if (transaction.ins.length !== prevOutputs.length) {
throw new Error(`input length must match prevOutputs length`);
}
const signatureVerifications = getSignatureVerifications(transaction, inputIndex, prevOutputs[inputIndex].value, {}, prevOutputs);
return publicKeys.map((publicKey) => {
const v = signatureVerifications.find((v) => isSignatureByPublicKey(v, publicKey));
return v ? v.signature : undefined;
});
}
/**
* @param transaction
* @param inputIndex
* @param prevOutputs - transaction outputs for inputs
* @param publicKeys - public keys to check signatures for
* @return array of booleans indicating a valid signature for every pubkey in _publicKeys_
*/
function verifySignatureWithPublicKeys(transaction, inputIndex, prevOutputs, publicKeys) {
return getSignaturesWithPublicKeys(transaction, inputIndex, prevOutputs, publicKeys).map((s) => s !== undefined);
}
/**
* Wrapper for {@see verifySignatureWithPublicKeys} for single pubkey
* @param transaction
* @param inputIndex
* @param prevOutputs
* @param publicKey
* @return true iff signature is valid
*/
function verifySignatureWithPublicKey(transaction, inputIndex, prevOutputs, publicKey) {
return verifySignatureWithPublicKeys(transaction, inputIndex, prevOutputs, [publicKey])[0];
}
function getDefaultSigHash(network, scriptType) {
switch ((0, networks_1.getMainnet)(network)) {
case networks_1.networks.bitcoincash:
case networks_1.networks.bitcoinsv:
case networks_1.networks.bitcoingold:
case networks_1.networks.ecash:
return bitcoinjs_lib_1.Transaction.SIGHASH_ALL | UtxoTransaction_1.UtxoTransaction.SIGHASH_FORKID;
default:
switch (scriptType) {
case 'p2tr':
case 'p2trMusig2':
return bitcoinjs_lib_1.Transaction.SIGHASH_DEFAULT;
default:
return bitcoinjs_lib_1.Transaction.SIGHASH_ALL;
}
}
}
function signInputP2shP2pk(txBuilder, vin, keyPair) {
const prevOutScriptType = 'p2sh-p2pk';
const { redeemScript, witnessScript } = (0, outputScripts_1.createOutputScriptP2shP2pk)(keyPair.publicKey);
keyPair.network = txBuilder.network;
txBuilder.sign({
vin,
prevOutScriptType,
keyPair,
hashType: getDefaultSigHash(txBuilder.network),
redeemScript,
witnessScript,
witnessValue: undefined,
});
}
function signInput2Of3(txBuilder, vin, scriptType, pubkeys, keyPair, cosigner, amount) {
let controlBlock;
let redeemScript;
let witnessScript;
const prevOutScriptType = (0, outputScripts_1.scriptType2Of3AsPrevOutType)(scriptType);
if (scriptType === 'p2tr') {
({ witnessScript, controlBlock } = (0, outputScripts_1.createSpendScriptP2tr)(pubkeys, [keyPair.publicKey, cosigner]));
}
else {
({ redeemScript, witnessScript } = (0, outputScripts_1.createOutputScript2of3)(pubkeys, scriptType));
}
keyPair.network = txBuilder.network;
txBuilder.sign({
vin,
prevOutScriptType,
keyPair,
hashType: getDefaultSigHash(txBuilder.network, scriptType),
redeemScript,
witnessScript,
witnessValue: amount,
controlBlock,
});
}
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{ Transaction, taproot, TxOutput, ScriptSignature } from 'bitcoinjs-lib';\nimport { BIP32Interface } from '@bitgo/secp256k1';\n\nimport { UtxoTransaction } from './UtxoTransaction';\nimport { UtxoTransactionBuilder } from './UtxoTransactionBuilder';\nimport {\n  createOutputScript2of3,\n  createOutputScriptP2shP2pk,\n  createSpendScriptP2tr,\n  getOutputScript,\n  ScriptType,\n  ScriptType2Of3,\n  scriptType2Of3AsPrevOutType,\n} from './outputScripts';\nimport { Triple } from './types';\nimport { getMainnet, Network, networks } from '../networks';\nimport { ecc as eccLib } from '@bitgo/secp256k1';\nimport { parseSignatureScript2Of3 } from './parseInput';\nimport { getTaprootOutputKey } from '../taproot';\n\n/**\n * Constraints for signature verifications.\n * Parameters are conjunctive: if multiple parameters are set, a verification for an individual\n * signature must satisfy all of them.\n */\nexport type VerificationSettings = {\n  /**\n   * The index of the signature to verify. Only iterates over non-empty signatures.\n   */\n  signatureIndex?: number;\n  /**\n   * The public key to verify.\n   */\n  publicKey?: Buffer;\n};\n\n/**\n * Result for a individual signature verification\n */\nexport type SignatureVerification =\n  | {\n      /** Set to the public key that signed for the signature */\n      signedBy: Buffer;\n      /** Set to the signature buffer */\n      signature: Buffer;\n    }\n  | { signedBy: undefined; signature: undefined };\n\n/**\n * @deprecated - use {@see verifySignaturesWithPublicKeys} instead\n * Get signature verifications for multsig transaction\n * @param transaction\n * @param inputIndex\n * @param amount - must be set for segwit transactions and BIP143 transactions\n * @param verificationSettings\n * @param prevOutputs - must be set for p2tr and p2trMusig2 transactions\n * @returns SignatureVerification[] - in order of parsed non-empty signatures\n */\nexport function getSignatureVerifications<TNumber extends number | bigint>(\n  transaction: UtxoTransaction<TNumber>,\n  inputIndex: number,\n  amount: TNumber,\n  verificationSettings: VerificationSettings = {},\n  prevOutputs?: TxOutput<TNumber>[]\n): SignatureVerification[] {\n  /* istanbul ignore next */\n  if (!transaction.ins) {\n    throw new Error(`invalid transaction`);\n  }\n\n  const input = transaction.ins[inputIndex];\n  /* istanbul ignore next */\n  if (!input) {\n    throw new Error(`no input at index ${inputIndex}`);\n  }\n\n  if ((!input.script || input.script.length === 0) && input.witness.length === 0) {\n    // Unsigned input: no signatures.\n    return [];\n  }\n\n  const parsedScript = parseSignatureScript2Of3(input);\n\n  if (parsedScript.scriptType === 'taprootKeyPathSpend' || parsedScript.scriptType === 'taprootScriptPathSpend') {\n    if (\n      parsedScript.scriptType === 'taprootKeyPathSpend' &&\n      (verificationSettings.signatureIndex || verificationSettings.publicKey)\n    ) {\n      throw new Error(`signatureIndex and publicKey parameters not supported for taprootKeyPathSpend`);\n    }\n\n    if (verificationSettings.signatureIndex !== undefined) {\n      throw new Error(`signatureIndex parameter not supported for taprootScriptPathSpend`);\n    }\n\n    if (!prevOutputs) {\n      throw new Error(`prevOutputs not set`);\n    }\n\n    if (prevOutputs.length !== transaction.ins.length) {\n      throw new Error(`prevOutputs length ${prevOutputs.length}, expected ${transaction.ins.length}`);\n    }\n  }\n\n  if (\n    parsedScript.scriptType !== 'taprootKeyPathSpend' &&\n    parsedScript.scriptType !== 'taprootScriptPathSpend' &&\n    prevOutputs\n  ) {\n    const prevOutScript = prevOutputs[inputIndex].script;\n\n    const output = getOutputScript(parsedScript.scriptType, parsedScript.pubScript);\n    if (!prevOutScript.equals(output)) {\n      throw new Error(\n        `prevout script ${prevOutScript.toString('hex')} does not match computed script ${output.toString('hex')}`\n      );\n    }\n  }\n\n  let publicKeys: Buffer[];\n  if (parsedScript.scriptType === 'taprootKeyPathSpend') {\n    if (!prevOutputs) {\n      throw new Error(`prevOutputs not set`);\n    }\n    publicKeys = [getTaprootOutputKey(prevOutputs[inputIndex].script)];\n  } else {\n    publicKeys = parsedScript.publicKeys.filter(\n      (buf) =>\n        verificationSettings.publicKey === undefined ||\n        verificationSettings.publicKey.equals(buf) ||\n        verificationSettings.publicKey.slice(1).equals(buf)\n    );\n  }\n\n  const signatures = parsedScript.signatures\n    .filter((s) => s && s.length)\n    .filter((s, i) => verificationSettings.signatureIndex === undefined || verificationSettings.signatureIndex === i);\n\n  return signatures.map((signatureBuffer): SignatureVerification => {\n    if (signatureBuffer === 0 || signatureBuffer.length === 0) {\n      return { signedBy: undefined, signature: undefined };\n    }\n\n    let hashType = Transaction.SIGHASH_DEFAULT;\n\n    if (signatureBuffer.length === 65) {\n      hashType = signatureBuffer[signatureBuffer.length - 1];\n      signatureBuffer = signatureBuffer.slice(0, -1);\n    }\n\n    if (parsedScript.scriptType === 'taprootScriptPathSpend') {\n      if (!prevOutputs) {\n        throw new Error(`prevOutputs not set`);\n      }\n      const { controlBlock, pubScript } = parsedScript;\n      const leafHash = taproot.getTapleafHash(eccLib, controlBlock, pubScript);\n      const signatureHash = transaction.hashForWitnessV1(\n        inputIndex,\n        prevOutputs.map(({ script }) => script),\n        prevOutputs.map(({ value }) => value),\n        hashType,\n        leafHash\n      );\n\n      const signedBy = publicKeys.filter(\n        (k) => Buffer.isBuffer(signatureBuffer) && eccLib.verifySchnorr(signatureHash, k, signatureBuffer)\n      );\n\n      if (signedBy.length === 0) {\n        return { signedBy: undefined, signature: undefined };\n      }\n      if (signedBy.length === 1) {\n        return { signedBy: signedBy[0], signature: signatureBuffer };\n      }\n      throw new Error(`illegal state: signed by multiple public keys`);\n    } else if (parsedScript.scriptType === 'taprootKeyPathSpend') {\n      if (!prevOutputs) {\n        throw new Error(`prevOutputs not set`);\n      }\n      const signatureHash = transaction.hashForWitnessV1(\n        inputIndex,\n        prevOutputs.map(({ script }) => script),\n        prevOutputs.map(({ value }) => value),\n        hashType\n      );\n      const result = eccLib.verifySchnorr(signatureHash, publicKeys[0], signatureBuffer);\n      return result\n        ? { signedBy: publicKeys[0], signature: signatureBuffer }\n        : { signedBy: undefined, signature: undefined };\n    } else {\n      // slice the last byte from the signature hash input because it's the hash type\n      const { signature, hashType } = ScriptSignature.decode(signatureBuffer);\n      const transactionHash =\n        parsedScript.scriptType === 'p2shP2wsh' || parsedScript.scriptType === 'p2wsh'\n          ? transaction.hashForWitnessV0(inputIndex, parsedScript.pubScript, amount, hashType)\n          : transaction.hashForSignatureByNetwork(inputIndex, parsedScript.pubScript, amount, hashType);\n      const signedBy = publicKeys.filter((publicKey) =>\n        eccLib.verify(\n          transactionHash,\n          publicKey,\n          signature,\n          /*\n            Strict verification (require lower-S value), as required by BIP-0146\n            https://github.com/bitcoin/bips/blob/master/bip-0146.mediawiki\n            https://github.com/bitcoin-core/secp256k1/blob/ac83be33/include/secp256k1.h#L478-L508\n            https://github.com/bitcoinjs/tiny-secp256k1/blob/v1.1.6/js.js#L231-L233\n          */\n          true\n        )\n      );\n\n      if (signedBy.length === 0) {\n        return { signedBy: undefined, signature: undefined };\n      }\n      if (signedBy.length === 1) {\n        return { signedBy: signedBy[0], signature: signatureBuffer };\n      }\n      throw new Error(`illegal state: signed by multiple public keys`);\n    }\n  });\n}\n\n/**\n * @deprecated use {@see verifySignatureWithPublicKeys} instead\n * @param transaction\n * @param inputIndex\n * @param amount\n * @param verificationSettings - if publicKey is specified, returns true iff any signature is signed by publicKey.\n * @param prevOutputs - must be set for p2tr transactions\n */\nexport function verifySignature<TNumber extends number | bigint>(\n  transaction: UtxoTransaction<TNumber>,\n  inputIndex: number,\n  amount: TNumber,\n  verificationSettings: VerificationSettings = {},\n  prevOutputs?: TxOutput<TNumber>[]\n): boolean {\n  const signatureVerifications = getSignatureVerifications(\n    transaction,\n    inputIndex,\n    amount,\n    verificationSettings,\n    prevOutputs\n  ).filter(\n    (v) =>\n      // If no publicKey is set in verificationSettings, all signatures must be valid.\n      // Otherwise, a single valid signature by the specified pubkey is sufficient.\n      verificationSettings.publicKey === undefined ||\n      (v.signedBy !== undefined &&\n        (verificationSettings.publicKey.equals(v.signedBy) ||\n          verificationSettings.publicKey.slice(1).equals(v.signedBy)))\n  );\n\n  return signatureVerifications.length > 0 && signatureVerifications.every((v) => v.signedBy !== undefined);\n}\n\n/**\n * @param v\n * @param publicKey\n * @return true iff signature is by publicKey (or xonly variant of publicKey)\n */\nfunction isSignatureByPublicKey(v: SignatureVerification, publicKey: Buffer): boolean {\n  return (\n    !!v.signedBy &&\n    (v.signedBy.equals(publicKey) ||\n      /* for p2tr signatures, we pass the pubkey in 33-byte format recover it from the signature in 32-byte format */\n      (publicKey.length === 33 && isSignatureByPublicKey(v, publicKey.slice(1))))\n  );\n}\n\n/**\n * @param transaction\n * @param inputIndex\n * @param prevOutputs\n * @param publicKeys\n * @return array with signature corresponding to n-th key, undefined if no match found\n */\nexport function getSignaturesWithPublicKeys<TNumber extends number | bigint>(\n  transaction: UtxoTransaction<TNumber>,\n  inputIndex: number,\n  prevOutputs: TxOutput<TNumber>[],\n  publicKeys: Buffer[]\n): Array<Buffer | undefined> {\n  if (transaction.ins.length !== prevOutputs.length) {\n    throw new Error(`input length must match prevOutputs length`);\n  }\n\n  const signatureVerifications = getSignatureVerifications(\n    transaction,\n    inputIndex,\n    prevOutputs[inputIndex].value,\n    {},\n    prevOutputs\n  );\n\n  return publicKeys.map((publicKey) => {\n    const v = signatureVerifications.find((v) => isSignatureByPublicKey(v, publicKey));\n    return v ? v.signature : undefined;\n  });\n}\n\n/**\n * @param transaction\n * @param inputIndex\n * @param prevOutputs - transaction outputs for inputs\n * @param publicKeys - public keys to check signatures for\n * @return array of booleans indicating a valid signature for every pubkey in _publicKeys_\n */\nexport function verifySignatureWithPublicKeys<TNumber extends number | bigint>(\n  transaction: UtxoTransaction<TNumber>,\n  inputIndex: number,\n  prevOutputs: TxOutput<TNumber>[],\n  publicKeys: Buffer[]\n): boolean[] {\n  return getSignaturesWithPublicKeys(transaction, inputIndex, prevOutputs, publicKeys).map((s) => s !== undefined);\n}\n\n/**\n * Wrapper for {@see verifySignatureWithPublicKeys} for single pubkey\n * @param transaction\n * @param inputIndex\n * @param prevOutputs\n * @param publicKey\n * @return true iff signature is valid\n */\nexport function verifySignatureWithPublicKey<TNumber extends number | bigint>(\n  transaction: UtxoTransaction<TNumber>,\n  inputIndex: number,\n  prevOutputs: TxOutput<TNumber>[],\n  publicKey: Buffer\n): boolean {\n  return verifySignatureWithPublicKeys(transaction, inputIndex, prevOutputs, [publicKey])[0];\n}\n\nexport function getDefaultSigHash(network: Network, scriptType?: ScriptType): number {\n  switch (getMainnet(network)) {\n    case networks.bitcoincash:\n    case networks.bitcoinsv:\n    case networks.bitcoingold:\n    case networks.ecash:\n      return Transaction.SIGHASH_ALL | UtxoTransaction.SIGHASH_FORKID;\n    default:\n      switch (scriptType) {\n        case 'p2tr':\n        case 'p2trMusig2':\n          return Transaction.SIGHASH_DEFAULT;\n        default:\n          return Transaction.SIGHASH_ALL;\n      }\n  }\n}\n\nexport function signInputP2shP2pk<TNumber extends number | bigint>(\n  txBuilder: UtxoTransactionBuilder<TNumber>,\n  vin: number,\n  keyPair: BIP32Interface\n): void {\n  const prevOutScriptType = 'p2sh-p2pk';\n  const { redeemScript, witnessScript } = createOutputScriptP2shP2pk(keyPair.publicKey);\n  keyPair.network = txBuilder.network;\n\n  txBuilder.sign({\n    vin,\n    prevOutScriptType,\n    keyPair,\n    hashType: getDefaultSigHash(txBuilder.network as Network),\n    redeemScript,\n    witnessScript,\n    witnessValue: undefined,\n  });\n}\n\nexport function signInput2Of3<TNumber extends number | bigint>(\n  txBuilder: UtxoTransactionBuilder<TNumber>,\n  vin: number,\n  scriptType: ScriptType2Of3,\n  pubkeys: Triple<Buffer>,\n  keyPair: BIP32Interface,\n  cosigner: Buffer,\n  amount: TNumber\n): void {\n  let controlBlock;\n  let redeemScript;\n  let witnessScript;\n\n  const prevOutScriptType = scriptType2Of3AsPrevOutType(scriptType);\n  if (scriptType === 'p2tr') {\n    ({ witnessScript, controlBlock } = createSpendScriptP2tr(pubkeys, [keyPair.publicKey, cosigner]));\n  } else {\n    ({ redeemScript, witnessScript } = createOutputScript2of3(pubkeys, scriptType));\n  }\n\n  keyPair.network = txBuilder.network;\n\n  txBuilder.sign({\n    vin,\n    prevOutScriptType,\n    keyPair,\n    hashType: getDefaultSigHash(txBuilder.network as Network, scriptType),\n    redeemScript,\n    witnessScript,\n    witnessValue: amount,\n    controlBlock,\n  });\n}\n"]}