btc-minikeytools/src/utils/base58.js

BTC-MiniKeyTools is a robust tool for working with Bitcoin Mini private keys. It provides validation, key generation, and conversion functionalities, including HEX and Wallet Import Format (WIF) keys. Fully equipped with CLI support and logging options, i

const ALPHABET = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz';

/**
 * Encodes a buffer into Base58 format.
 *
 * @param {Buffer} buffer - The buffer to encode.
 * @returns {string} - The Base58 encoded string.
 */
function encodeBase58(buffer) {
    const BASE = ALPHABET.length;
    let number = BigInt('0x' + buffer.toString('hex'));
    let encoded = [];

    while (number > 0) {
        const remainder = number % BigInt(BASE);
        encoded.unshift(ALPHABET[Number(remainder)]);
        number = number / BigInt(BASE);
    }

    for (let i = 0; i < buffer.length && buffer[i] === 0; i++) {
        encoded.unshift('1');
    }

    return encoded.join('');
}

module.exports = { encodeBase58 };