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48 lines
1.6 KiB
JavaScript
48 lines
1.6 KiB
JavaScript
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/**
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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 {runHash} from "../lib/Hash";
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/**
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* SHA2 operation
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*/
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class SHA2 extends Operation {
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/**
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* SHA2 constructor
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*/
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constructor() {
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super();
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this.name = "SHA2";
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this.module = "Hashing";
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this.description = "The SHA-2 (Secure Hash Algorithm 2) hash functions were designed by the NSA. SHA-2 includes significant changes from its predecessor, SHA-1. The SHA-2 family consists of hash functions with digests (hash values) that are 224, 256, 384 or 512 bits: SHA224, SHA256, SHA384, SHA512.<br><br><ul><li>SHA-512 operates on 64-bit words.</li><li>SHA-256 operates on 32-bit words.</li><li>SHA-384 is largely identical to SHA-512 but is truncated to 384 bytes.</li><li>SHA-224 is largely identical to SHA-256 but is truncated to 224 bytes.</li><li>SHA-512/224 and SHA-512/256 are truncated versions of SHA-512, but the initial values are generated using the method described in Federal Information Processing Standards (FIPS) PUB 180-4.</li></ul>";
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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": "Size",
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"type": "option",
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"value": ["512", "256", "384", "224", "512/256", "512/224"]
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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 size = args[0];
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return runHash("sha" + size, input);
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}
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}
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export default SHA2;
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