mirror of https://github.com/gchq/CyberChef.git
51 lines
1.5 KiB
JavaScript
51 lines
1.5 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.mjs";
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import crypto from "crypto";
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/**
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* Generate UUID operation
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*/
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class GenerateUUID extends Operation {
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/**
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* GenerateUUID constructor
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*/
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constructor() {
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super();
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this.name = "Generate UUID";
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this.module = "Crypto";
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this.description = "Generates an RFC 4122 version 4 compliant Universally Unique Identifier (UUID), also known as a Globally Unique Identifier (GUID).<br><br>A version 4 UUID relies on random numbers, in this case generated using <code>window.crypto</code> if available and falling back to <code>Math.random</code> if not.";
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this.infoURL = "https://wikipedia.org/wiki/Universally_unique_identifier";
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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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const buf = new Uint32Array(4).map(() => {
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return crypto.randomBytes(4).readUInt32BE(0, true);
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});
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let i = 0;
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return "xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".replace(/[xy]/g, function(c) {
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const r = (buf[i >> 3] >> ((i % 8) * 4)) & 0xf,
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v = c === "x" ? r : (r & 0x3 | 0x8);
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i++;
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return v.toString(16);
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});
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}
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}
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export default GenerateUUID;
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