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Текущая директория: /usr/lib/node_modules/bitgo/node_modules/@bitgo/utxo-core/dist/src/bip322

Просмотр файла: toSign.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.MAX_NUM_BIP322_INPUTS = void 0;
exports.createBaseToSignPsbt = createBaseToSignPsbt;
exports.addBip322Input = addBip322Input;
exports.addBip322InputWithChainAndIndex = addBip322InputWithChainAndIndex;
const utxo_lib_1 = require("@bitgo/utxo-lib");
const outputScripts_1 = require("@bitgo/utxo-lib/dist/src/bitgo/outputScripts");
const utils_1 = require("./utils");
const toSpend_1 = require("./toSpend");
exports.MAX_NUM_BIP322_INPUTS = 200;
/**
 * Create the base PSBT for the to_sign transaction for BIP322 signing.
 * There will be ever 1 output.
 */
function createBaseToSignPsbt(rootWalletKeys, network = utxo_lib_1.networks.bitcoin) {
    // Create PSBT object for constructing the transaction
    const psbt = utxo_lib_1.bitgo.createPsbtForNetwork({ network });
    // Set default value for nVersion and nLockTime
    psbt.setVersion(0); // nVersion = 0
    psbt.setLocktime(0); // nLockTime = 0
    // Set the output
    psbt.addOutput({
        value: BigInt(0), // vout[0].nValue = 0
        script: Buffer.from([0x6a]), // vout[0].scriptPubKey = OP_RETURN
    });
    // If rootWalletKeys are provided, add them to the PSBT as global xpubs
    if (rootWalletKeys) {
        utxo_lib_1.bitgo.addXpubsToPsbt(psbt, rootWalletKeys);
    }
    return psbt;
}
/**
 * Add a BIP322 input to the PSBT.
 * Source implementation:
 * https://github.com/bitcoin/bips/blob/master/bip-0322.mediawiki#full
 *
 * @param {string} message - The message that is hashed into the `to_spend` transaction.
 * @param {AddressDetails} addressDetails - The details of the address, including redeemScript and/or witnessScript.
 * @param {string} [tag=BIP322_TAG] - The tag to use for hashing, defaults to BIP322_TAG.
 * @returns {Psbt} - The hex representation of the constructed PSBT.
 */
function addBip322Input(psbt, message, addressDetails, tag = toSpend_1.BIP322_TAG) {
    const toSpendTx = (0, toSpend_1.buildToSpendTransaction)(addressDetails.scriptPubKey, message, tag);
    if (psbt.data.inputs.length >= exports.MAX_NUM_BIP322_INPUTS) {
        throw new Error(`Exceeded maximum number of BIP322 inputs (${exports.MAX_NUM_BIP322_INPUTS})`);
    }
    psbt.addInput({
        hash: toSpendTx.getId(), // vin[0].prevout.hash = to_spend.txid
        index: 0, // vin[0].prevout.n = 0
        sequence: 0, // vin[0].nSequence = 0
        nonWitnessUtxo: toSpendTx.toBuffer(), // previous transaction for us to rebuild later to verify
        sighashType: utxo_lib_1.Transaction.SIGHASH_ALL,
    });
    const inputIndex = psbt.data.inputs.length - 1;
    psbt.updateInput(inputIndex, {
        witnessUtxo: { value: BigInt(0), script: addressDetails.scriptPubKey },
    });
    if (addressDetails.redeemScript) {
        psbt.updateInput(inputIndex, { redeemScript: addressDetails.redeemScript });
    }
    if (addressDetails.witnessScript) {
        psbt.updateInput(inputIndex, {
            witnessScript: addressDetails.witnessScript,
        });
    }
    // Add the message as a proprietary key value to the PSBT so we can verify it later
    (0, utils_1.addBip322ProofMessage)(psbt, inputIndex, Buffer.from(message));
}
function addBip322InputWithChainAndIndex(psbt, message, rootWalletKeys, scriptId) {
    const scriptType = utxo_lib_1.bitgo.scriptTypeForChain(scriptId.chain);
    const walletKeys = rootWalletKeys.deriveForChainAndIndex(scriptId.chain, scriptId.index);
    const output = utxo_lib_1.bitgo.outputScripts.createOutputScript2of3(walletKeys.publicKeys, utxo_lib_1.bitgo.scriptTypeForChain(scriptId.chain));
    addBip322Input(psbt, message, {
        scriptPubKey: output.scriptPubKey,
        redeemScript: output.redeemScript,
        witnessScript: output.witnessScript,
    });
    const inputIndex = psbt.data.inputs.length - 1;
    // When adding the taproot metadata, we assume that we are NOT using the backup path
    // For script type p2tr, it means that we are using signer and bitgo keys when creating the tap tree
    // spending paths. For p2trMusig2, it means that we are using the taproot key path spending
    const keyNames = ['user', 'bitgo'];
    if (scriptType === 'p2tr') {
        const { controlBlock, witnessScript, leafVersion, leafHash } = utxo_lib_1.bitgo.outputScripts.createSpendScriptP2tr(walletKeys.publicKeys, [walletKeys.user.publicKey, walletKeys.bitgo.publicKey]);
        psbt.updateInput(inputIndex, {
            tapLeafScript: [{ controlBlock, script: witnessScript, leafVersion }],
        });
        psbt.updateInput(inputIndex, {
            tapBip32Derivation: keyNames.map((key) => ({
                leafHashes: [leafHash],
                pubkey: (0, outputScripts_1.toXOnlyPublicKey)(walletKeys[key].publicKey),
                path: rootWalletKeys.getDerivationPath(rootWalletKeys[key], scriptId.chain, scriptId.index),
                masterFingerprint: rootWalletKeys[key].fingerprint,
            })),
        });
    }
    else if (scriptType === 'p2trMusig2') {
        const { internalPubkey: tapInternalKey, outputPubkey: tapOutputKey, taptreeRoot, } = utxo_lib_1.bitgo.outputScripts.createKeyPathP2trMusig2(walletKeys.publicKeys);
        const participantsKeyValData = utxo_lib_1.bitgo.musig2.encodePsbtMusig2Participants({
            tapOutputKey,
            tapInternalKey,
            participantPubKeys: [walletKeys.user.publicKey, walletKeys.bitgo.publicKey],
        });
        utxo_lib_1.bitgo.addProprietaryKeyValuesFromUnknownKeyValues(psbt, 'input', inputIndex, participantsKeyValData);
        psbt.updateInput(inputIndex, {
            tapInternalKey: tapInternalKey,
        });
        psbt.updateInput(inputIndex, {
            tapMerkleRoot: taptreeRoot,
        });
        psbt.updateInput(inputIndex, {
            tapBip32Derivation: keyNames.map((key) => ({
                leafHashes: [],
                pubkey: (0, outputScripts_1.toXOnlyPublicKey)(walletKeys[key].publicKey),
                path: rootWalletKeys.getDerivationPath(rootWalletKeys[key], scriptId.chain, scriptId.index),
                masterFingerprint: rootWalletKeys[key].fingerprint,
            })),
        });
    }
    else {
        // Add bip32 derivation information for the input
        psbt.updateInput(inputIndex, utxo_lib_1.bitgo.getPsbtBip32DerivationOutputUpdate(rootWalletKeys, walletKeys, utxo_lib_1.bitgo.scriptTypeForChain(scriptId.chain)));
    }
}
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{ Psbt, bitgo, networks, Transaction } from '@bitgo/utxo-lib';\nimport { toXOnlyPublicKey } from '@bitgo/utxo-lib/dist/src/bitgo/outputScripts';\n\nimport { addBip322ProofMessage } from './utils';\nimport { BIP322_TAG, buildToSpendTransaction } from './toSpend';\n\nexport type AddressDetails = {\n  redeemScript?: Buffer;\n  witnessScript?: Buffer;\n  scriptPubKey: Buffer;\n};\nexport const MAX_NUM_BIP322_INPUTS = 200;\n\n/**\n * Create the base PSBT for the to_sign transaction for BIP322 signing.\n * There will be ever 1 output.\n */\nexport function createBaseToSignPsbt(\n  rootWalletKeys?: bitgo.RootWalletKeys,\n  network = networks.bitcoin\n): bitgo.UtxoPsbt {\n  // Create PSBT object for constructing the transaction\n  const psbt = bitgo.createPsbtForNetwork({ network });\n  // Set default value for nVersion and nLockTime\n  psbt.setVersion(0); // nVersion = 0\n  psbt.setLocktime(0); // nLockTime = 0\n\n  // Set the output\n  psbt.addOutput({\n    value: BigInt(0), // vout[0].nValue = 0\n    script: Buffer.from([0x6a]), // vout[0].scriptPubKey = OP_RETURN\n  });\n\n  // If rootWalletKeys are provided, add them to the PSBT as global xpubs\n  if (rootWalletKeys) {\n    bitgo.addXpubsToPsbt(psbt, rootWalletKeys);\n  }\n\n  return psbt;\n}\n\n/**\n * Add a BIP322 input to the PSBT.\n * Source implementation:\n * https://github.com/bitcoin/bips/blob/master/bip-0322.mediawiki#full\n *\n * @param {string} message - The message that is hashed into the `to_spend` transaction.\n * @param {AddressDetails} addressDetails - The details of the address, including redeemScript and/or witnessScript.\n * @param {string} [tag=BIP322_TAG] - The tag to use for hashing, defaults to BIP322_TAG.\n * @returns {Psbt} - The hex representation of the constructed PSBT.\n */\nexport function addBip322Input(psbt: Psbt, message: string, addressDetails: AddressDetails, tag = BIP322_TAG): void {\n  const toSpendTx = buildToSpendTransaction(addressDetails.scriptPubKey, message, tag);\n  if (psbt.data.inputs.length >= MAX_NUM_BIP322_INPUTS) {\n    throw new Error(`Exceeded maximum number of BIP322 inputs (${MAX_NUM_BIP322_INPUTS})`);\n  }\n\n  psbt.addInput({\n    hash: toSpendTx.getId(), // vin[0].prevout.hash = to_spend.txid\n    index: 0, // vin[0].prevout.n = 0\n    sequence: 0, // vin[0].nSequence = 0\n    nonWitnessUtxo: toSpendTx.toBuffer(), // previous transaction for us to rebuild later to verify\n    sighashType: Transaction.SIGHASH_ALL,\n  });\n  const inputIndex = psbt.data.inputs.length - 1;\n  psbt.updateInput(inputIndex, {\n    witnessUtxo: { value: BigInt(0), script: addressDetails.scriptPubKey },\n  });\n\n  if (addressDetails.redeemScript) {\n    psbt.updateInput(inputIndex, { redeemScript: addressDetails.redeemScript });\n  }\n  if (addressDetails.witnessScript) {\n    psbt.updateInput(inputIndex, {\n      witnessScript: addressDetails.witnessScript,\n    });\n  }\n\n  // Add the message as a proprietary key value to the PSBT so we can verify it later\n  addBip322ProofMessage(psbt, inputIndex, Buffer.from(message));\n}\n\nexport function addBip322InputWithChainAndIndex(\n  psbt: bitgo.UtxoPsbt,\n  message: string,\n  rootWalletKeys: bitgo.RootWalletKeys,\n  scriptId: bitgo.ScriptId\n): void {\n  const scriptType = bitgo.scriptTypeForChain(scriptId.chain);\n  const walletKeys = rootWalletKeys.deriveForChainAndIndex(scriptId.chain, scriptId.index);\n  const output = bitgo.outputScripts.createOutputScript2of3(\n    walletKeys.publicKeys,\n    bitgo.scriptTypeForChain(scriptId.chain)\n  );\n\n  addBip322Input(psbt as Psbt, message, {\n    scriptPubKey: output.scriptPubKey,\n    redeemScript: output.redeemScript,\n    witnessScript: output.witnessScript,\n  });\n\n  const inputIndex = psbt.data.inputs.length - 1;\n\n  // When adding the taproot metadata, we assume that we are NOT using the backup path\n  // For script type p2tr, it means that we are using signer and bitgo keys when creating the tap tree\n  // spending paths. For p2trMusig2, it means that we are using the taproot key path spending\n  const keyNames = ['user', 'bitgo'] as bitgo.KeyName[];\n  if (scriptType === 'p2tr') {\n    const { controlBlock, witnessScript, leafVersion, leafHash } = bitgo.outputScripts.createSpendScriptP2tr(\n      walletKeys.publicKeys,\n      [walletKeys.user.publicKey, walletKeys.bitgo.publicKey]\n    );\n    psbt.updateInput(inputIndex, {\n      tapLeafScript: [{ controlBlock, script: witnessScript, leafVersion }],\n    });\n\n    psbt.updateInput(inputIndex, {\n      tapBip32Derivation: keyNames.map((key) => ({\n        leafHashes: [leafHash],\n        pubkey: toXOnlyPublicKey(walletKeys[key].publicKey),\n        path: rootWalletKeys.getDerivationPath(rootWalletKeys[key], scriptId.chain, scriptId.index),\n        masterFingerprint: rootWalletKeys[key].fingerprint,\n      })),\n    });\n  } else if (scriptType === 'p2trMusig2') {\n    const {\n      internalPubkey: tapInternalKey,\n      outputPubkey: tapOutputKey,\n      taptreeRoot,\n    } = bitgo.outputScripts.createKeyPathP2trMusig2(walletKeys.publicKeys);\n\n    const participantsKeyValData = bitgo.musig2.encodePsbtMusig2Participants({\n      tapOutputKey,\n      tapInternalKey,\n      participantPubKeys: [walletKeys.user.publicKey, walletKeys.bitgo.publicKey],\n    });\n    bitgo.addProprietaryKeyValuesFromUnknownKeyValues(psbt, 'input', inputIndex, participantsKeyValData);\n\n    psbt.updateInput(inputIndex, {\n      tapInternalKey: tapInternalKey,\n    });\n\n    psbt.updateInput(inputIndex, {\n      tapMerkleRoot: taptreeRoot,\n    });\n\n    psbt.updateInput(inputIndex, {\n      tapBip32Derivation: keyNames.map((key) => ({\n        leafHashes: [],\n        pubkey: toXOnlyPublicKey(walletKeys[key].publicKey),\n        path: rootWalletKeys.getDerivationPath(rootWalletKeys[key], scriptId.chain, scriptId.index),\n        masterFingerprint: rootWalletKeys[key].fingerprint,\n      })),\n    });\n  } else {\n    // Add bip32 derivation information for the input\n    psbt.updateInput(\n      inputIndex,\n      bitgo.getPsbtBip32DerivationOutputUpdate(rootWalletKeys, walletKeys, bitgo.scriptTypeForChain(scriptId.chain))\n    );\n  }\n}\n"]}

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