mirror of https://github.com/gchq/CyberChef.git
184 lines
5.0 KiB
JavaScript
184 lines
5.0 KiB
JavaScript
/**
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* @author n1474335 [n1474335@gmail.com]
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* @copyright Crown Copyright 2016
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* @license Apache-2.0
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*/
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import Operation from "../Operation";
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import OperationError from "../errors/OperationError";
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/**
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* Analyse hash operation
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*/
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class AnalyseHash extends Operation {
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/**
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* AnalyseHash constructor
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*/
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constructor() {
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super();
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this.name = "Analyse hash";
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this.module = "Hashing";
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this.description = "Tries to determine information about a given hash and suggests which algorithm may have been used to generate it based on its length.";
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this.inputType = "string";
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this.outputType = "string";
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this.args = [];
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}
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/**
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* @param {string} 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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input = input.replace(/\s/g, "");
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let output = "",
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possibleHashFunctions = [];
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const byteLength = input.length / 2,
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bitLength = byteLength * 8;
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if (!/^[a-f0-9]+$/i.test(input)) {
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throw new OperationError("Invalid hash");
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}
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output += "Hash length: " + input.length + "\n" +
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"Byte length: " + byteLength + "\n" +
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"Bit length: " + bitLength + "\n\n" +
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"Based on the length, this hash could have been generated by one of the following hashing functions:\n";
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switch (bitLength) {
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case 4:
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possibleHashFunctions = [
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"Fletcher-4",
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"Luhn algorithm",
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"Verhoeff algorithm",
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];
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break;
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case 8:
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possibleHashFunctions = [
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"Fletcher-8",
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];
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break;
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case 16:
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possibleHashFunctions = [
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"BSD checksum",
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"CRC-16",
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"SYSV checksum",
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"Fletcher-16"
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];
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break;
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case 32:
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possibleHashFunctions = [
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"CRC-32",
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"Fletcher-32",
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"Adler-32",
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];
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break;
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case 64:
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possibleHashFunctions = [
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"CRC-64",
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"RIPEMD-64",
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"SipHash",
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];
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break;
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case 128:
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possibleHashFunctions = [
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"MD5",
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"MD4",
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"MD2",
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"HAVAL-128",
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"RIPEMD-128",
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"Snefru",
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"Tiger-128",
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];
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break;
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case 160:
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possibleHashFunctions = [
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"SHA-1",
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"SHA-0",
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"FSB-160",
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"HAS-160",
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"HAVAL-160",
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"RIPEMD-160",
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"Tiger-160",
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];
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break;
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case 192:
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possibleHashFunctions = [
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"Tiger",
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"HAVAL-192",
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];
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break;
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case 224:
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possibleHashFunctions = [
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"SHA-224",
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"SHA3-224",
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"ECOH-224",
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"FSB-224",
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"HAVAL-224",
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];
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break;
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case 256:
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possibleHashFunctions = [
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"SHA-256",
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"SHA3-256",
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"BLAKE-256",
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"ECOH-256",
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"FSB-256",
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"GOST",
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"Grøstl-256",
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"HAVAL-256",
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"PANAMA",
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"RIPEMD-256",
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"Snefru",
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];
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break;
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case 320:
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possibleHashFunctions = [
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"RIPEMD-320",
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];
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break;
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case 384:
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possibleHashFunctions = [
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"SHA-384",
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"SHA3-384",
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"ECOH-384",
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"FSB-384",
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];
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break;
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case 512:
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possibleHashFunctions = [
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"SHA-512",
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"SHA3-512",
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"BLAKE-512",
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"ECOH-512",
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"FSB-512",
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"Grøstl-512",
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"JH",
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"MD6",
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"Spectral Hash",
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"SWIFFT",
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"Whirlpool",
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];
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break;
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case 1024:
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possibleHashFunctions = [
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"Fowler-Noll-Vo",
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];
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break;
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default:
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possibleHashFunctions = [
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"Unknown"
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];
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break;
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}
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return output + possibleHashFunctions.join("\n");
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}
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}
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export default AnalyseHash;
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