@exodus/ethereumjs-util/dist/hash.js

A collection of utility functions for Ethereum

"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
exports.rlphash = exports.ripemd160FromArray = exports.ripemd160FromString = exports.ripemd160 = exports.sha256FromArray = exports.sha256FromString = exports.sha256 = exports.keccakFromArray = exports.keccakFromHexString = exports.keccakFromString = exports.keccak256 = exports.keccak = void 0;
/// <reference path="forked-modules.d.ts"/>
const hash_1 = require("@exodus/crypto/hash");
const sha3_1 = require("@noble/hashes/sha3");
const rlp = __importStar(require("rlp"));
const bytes_1 = require("./bytes");
const helpers_1 = require("./helpers");
const keccak224 = (a) => Buffer.from(sha3_1.keccak_224(a));
const k256 = (a) => Buffer.from(sha3_1.keccak_256(a));
const keccak384 = (a) => Buffer.from(sha3_1.keccak_384(a));
const keccak512 = (a) => Buffer.from(sha3_1.keccak_512(a));
/**
 * Creates Keccak hash of a Buffer input
 * @param a The input data (Buffer)
 * @param bits (number = 256) The Keccak width
 */
exports.keccak = function (a, bits = 256) {
    helpers_1.assertIsBuffer(a);
    switch (bits) {
        case 224: {
            return keccak224(a);
        }
        case 256: {
            return k256(a);
        }
        case 384: {
            return keccak384(a);
        }
        case 512: {
            return keccak512(a);
        }
        default: {
            throw new Error(`Invald algorithm: keccak${bits}`);
        }
    }
};
/**
 * Creates Keccak-256 hash of the input, alias for keccak(a, 256).
 * @param a The input data (Buffer)
 */
exports.keccak256 = function (a) {
    return exports.keccak(a);
};
/**
 * Creates Keccak hash of a utf-8 string input
 * @param a The input data (String)
 * @param bits (number = 256) The Keccak width
 */
exports.keccakFromString = function (a, bits = 256) {
    helpers_1.assertIsString(a);
    const buf = Buffer.from(a, 'utf8');
    return exports.keccak(buf, bits);
};
/**
 * Creates Keccak hash of an 0x-prefixed string input
 * @param a The input data (String)
 * @param bits (number = 256) The Keccak width
 */
exports.keccakFromHexString = function (a, bits = 256) {
    helpers_1.assertIsHexString(a);
    return exports.keccak(bytes_1.toBuffer(a), bits);
};
/**
 * Creates Keccak hash of a number array input
 * @param a The input data (number[])
 * @param bits (number = 256) The Keccak width
 */
exports.keccakFromArray = function (a, bits = 256) {
    helpers_1.assertIsArray(a);
    return exports.keccak(bytes_1.toBuffer(a), bits);
};
/**
 * Creates SHA256 hash of an input.
 * @param  a The input data (Buffer|Array|String)
 */
const _sha256 = function (a) {
    return hash_1.hashSync('sha256', bytes_1.toBuffer(a));
};
/**
 * Creates SHA256 hash of a Buffer input.
 * @param a The input data (Buffer)
 */
exports.sha256 = function (a) {
    helpers_1.assertIsBuffer(a);
    return _sha256(a);
};
/**
 * Creates SHA256 hash of a string input.
 * @param a The input data (string)
 */
exports.sha256FromString = function (a) {
    helpers_1.assertIsString(a);
    return _sha256(a);
};
/**
 * Creates SHA256 hash of a number[] input.
 * @param a The input data (number[])
 */
exports.sha256FromArray = function (a) {
    helpers_1.assertIsArray(a);
    return _sha256(a);
};
/**
 * Creates RIPEMD160 hash of the input.
 * @param a The input data (Buffer|Array|String|Number)
 * @param padded Whether it should be padded to 256 bits or not
 */
const _ripemd160 = function (a, padded) {
    const hash = hash_1.hashSync('ripemd160', bytes_1.toBuffer(a));
    if (padded === true) {
        return bytes_1.setLengthLeft(hash, 32);
    }
    else {
        return hash;
    }
};
/**
 * Creates RIPEMD160 hash of a Buffer input.
 * @param a The input data (Buffer)
 * @param padded Whether it should be padded to 256 bits or not
 */
exports.ripemd160 = function (a, padded) {
    helpers_1.assertIsBuffer(a);
    return _ripemd160(a, padded);
};
/**
 * Creates RIPEMD160 hash of a string input.
 * @param a The input data (String)
 * @param padded Whether it should be padded to 256 bits or not
 */
exports.ripemd160FromString = function (a, padded) {
    helpers_1.assertIsString(a);
    return _ripemd160(a, padded);
};
/**
 * Creates RIPEMD160 hash of a number[] input.
 * @param a The input data (number[])
 * @param padded Whether it should be padded to 256 bits or not
 */
exports.ripemd160FromArray = function (a, padded) {
    helpers_1.assertIsArray(a);
    return _ripemd160(a, padded);
};
/**
 * Creates SHA-3 hash of the RLP encoded version of the input.
 * @param a The input data
 */
exports.rlphash = function (a) {
    return exports.keccak(rlp.encode(a));
};
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