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Текущая директория: /usr/lib/node_modules/bitgo/node_modules/@bitgo/utxo-lib/dist/src/bitgo
Просмотр файла: keyutil.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.privateKeyBufferToECPair = privateKeyBufferToECPair;
exports.privateKeyBufferFromECPair = privateKeyBufferFromECPair;
exports.convertExtendedKeyNetwork = convertExtendedKeyNetwork;
const bs58check = require("bs58check");
const noble_ecc_1 = require("../noble_ecc");
/**
 * Create an ECPair from the raw private key bytes
 * @param {Buffer} buffer - Private key for the ECPair. Must be exactly 32 bytes.
 * @param {Object} [network] - Network for the ECPair. Defaults to bitcoin.
 * @return {ECPair}
 */
function privateKeyBufferToECPair(buffer, network) {
    if (!Buffer.isBuffer(buffer) || buffer.length !== 32) {
        throw new Error('invalid private key buffer');
    }
    return noble_ecc_1.ECPair.fromPrivateKey(buffer);
}
/**
 * Get the private key as a 32 bytes buffer. If it is smaller than 32 bytes, pad it with zeros
 * @param {ECPair} ecPair
 * @return Buffer 32 bytes
 */
function privateKeyBufferFromECPair(ecPair) {
    if (ecPair.constructor.name !== 'ECPair') {
        throw new TypeError(`invalid argument ecpair`);
    }
    const privkey = ecPair.privateKey;
    if (!Buffer.isBuffer(privkey)) {
        throw new Error(`unexpected privkey type`);
    }
    if (privkey.length !== 32) {
        throw new Error(`unexpected privkey length`);
    }
    return privkey;
}
/**
 * Converts an extended key from one network to another by updating its version bytes.
 *
 * Handles both public and private keys, allowing conversion between networks like
 * Bitcoin Mainnet and Testnet.
 *
 * @returns The extended key with the updated network version.
 */
function convertExtendedKeyNetwork(extendedKey, fromNetwork, targetNetwork) {
    if (fromNetwork === targetNetwork) {
        return extendedKey;
    }
    const decodedData = bs58check.decode(extendedKey);
    const hdNode = noble_ecc_1.bip32.fromBase58(extendedKey, fromNetwork);
    const targetVersionBytes = hdNode.isNeutered() ? targetNetwork.bip32.public : targetNetwork.bip32.private;
    const versionBuffer = Buffer.alloc(4);
    versionBuffer.writeUInt32BE(targetVersionBytes, 0);
    versionBuffer.copy(decodedData, 0, 0, 4);
    return bs58check.encode(decodedData);
}
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