mirror of https://github.com/gchq/CyberChef.git
92 lines
2.9 KiB
JavaScript
92 lines
2.9 KiB
JavaScript
/**
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* @author n1474335 [n1474335@gmail.com]
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* @copyright Crown Copyright 2019
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* @license Apache-2.0
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*/
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import Operation from "../Operation.mjs";
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import OperationError from "../errors/OperationError.mjs";
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import GostDigest from "../vendor/gost/gostDigest.mjs";
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import { toHexFast } from "../lib/Hex.mjs";
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/**
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* GOST hash operation
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*/
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class GOSTHash extends Operation {
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/**
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* GOSTHash constructor
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*/
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constructor() {
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super();
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this.name = "GOST Hash";
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this.module = "Hashing";
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this.description = "The GOST hash function, defined in the standards GOST R 34.11-94 and GOST 34.311-95 is a 256-bit cryptographic hash function. It was initially defined in the Russian national standard GOST R 34.11-94 <i>Information Technology – Cryptographic Information Security – Hash Function</i>. The equivalent standard used by other member-states of the CIS is GOST 34.311-95.<br><br>This function must not be confused with a different Streebog hash function, which is defined in the new revision of the standard GOST R 34.11-2012.<br><br>The GOST hash function is based on the GOST block cipher.";
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this.infoURL = "https://wikipedia.org/wiki/GOST_(hash_function)";
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this.inputType = "ArrayBuffer";
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this.outputType = "string";
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this.args = [
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{
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name: "Algorithm",
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type: "argSelector",
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value: [
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{
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name: "GOST 28147 (1994)",
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off: [1],
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on: [2]
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},
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{
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name: "GOST R 34.11 (Streebog, 2012)",
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on: [1],
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off: [2]
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}
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]
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},
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{
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name: "Digest length",
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type: "option",
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value: ["256", "512"]
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},
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{
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name: "sBox",
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type: "option",
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value: ["E-TEST", "E-A", "E-B", "E-C", "E-D", "E-SC", "E-Z", "D-TEST", "D-A", "D-SC"]
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}
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];
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}
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/**
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* @param {ArrayBuffer} input
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* @param {Object[]} args
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* @returns {string}
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*/
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run(input, args) {
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const [version, length, sBox] = args;
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const versionNum = version === "GOST 28147 (1994)" ? 1994 : 2012;
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const algorithm = {
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name: versionNum === 1994 ? "GOST 28147" : "GOST R 34.10",
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version: versionNum,
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mode: "HASH"
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};
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if (versionNum === 1994) {
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algorithm.sBox = sBox;
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} else {
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algorithm.length = parseInt(length, 10);
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}
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try {
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const gostDigest = new GostDigest(algorithm);
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return toHexFast(gostDigest.digest(input));
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} catch (err) {
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throw new OperationError(err);
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}
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}
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}
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export default GOSTHash;
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