mirror of https://github.com/gchq/CyberChef.git
61 lines
1.4 KiB
JavaScript
61 lines
1.4 KiB
JavaScript
/**
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* @author gchq77703 []
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* @copyright Crown Copyright 2018
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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 forge from "node-forge/dist/forge.min.js";
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/**
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* RSA Sign operation
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*/
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class RSASign extends Operation {
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/**
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* RSASign constructor
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*/
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constructor() {
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super();
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this.name = "RSA Sign";
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this.module = "Ciphers";
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this.description = "Sign a plaintext message with a PEM encoded RSA key.";
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this.infoURL = "https://wikipedia.org/wiki/RSA_(cryptosystem)";
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this.inputType = "string";
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this.outputType = "byteArray";
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this.args = [
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{
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name: "RSA Private Key (PEM)",
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type: "text",
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value: "-----BEGIN RSA PRIVATE KEY-----"
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},
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{
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name: "Password",
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type: "text",
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value: ""
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}
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];
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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 [key, password] = args;
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const privateKey = forge.pki.decryptRsaPrivateKey(key, password);
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const md = forge.md.sha1.create();
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md.update(input, "utf8");
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const signature = privateKey.sign(md);
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return signature.split("").map(char => char.charCodeAt());
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}
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}
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export default RSASign;
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