@abdellatif.dev/cryptjs/src/sha256.js

A JavaScript/TypeScript library that brings cryptographic functionality from Dart to the web

import { encode3Bytes } from "./encode.js";
import { Sha, shaType } from "./sha.js";
import shaAlgorithm from "./shaAlgorithm/index.js";
import StringBuffer from "./StringBuffer.js";

/**
 * sha-256 algorithm
 * @param {string} data data to hash
 * @param {import("./types").ShaOptions} [options] optional arugment
 * @param {string} [options.salt] provided salt
 * @param {number} [options.rounds] provided rounds
 * @returns {Sha} Sha-512
 */
function sha256(data, options) {
    const type = shaType.sha256;
    const res = shaAlgorithm(type, data, 32, options?.rounds, options?.salt);
    const c = res.hashSeq;

    const buffer = new StringBuffer();

    encode3Bytes(buffer, c[0], c[10], c[20]);
    encode3Bytes(buffer, c[21], c[1], c[11]);
    encode3Bytes(buffer, c[12], c[22], c[2]);
    encode3Bytes(buffer, c[3], c[13], c[23]);
    encode3Bytes(buffer, c[24], c[4], c[14]);
    encode3Bytes(buffer, c[15], c[25], c[5]);
    encode3Bytes(buffer, c[6], c[16], c[26]);
    encode3Bytes(buffer, c[27], c[7], c[17]);
    encode3Bytes(buffer, c[18], c[28], c[8]);
    encode3Bytes(buffer, c[9], c[19], c[29]);
    encode3Bytes(buffer, c[31], c[30]);

    return new Sha(type, res.salt, buffer.toString());
}

export { sha256 };