mirror of https://github.com/gchq/CyberChef.git
95 lines
2.9 KiB
JavaScript
95 lines
2.9 KiB
JavaScript
/**
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* @author tlwr [toby@toby.codes]
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* @copyright Crown Copyright 2017
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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 kbpgp from "kbpgp";
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import { ASP, importPrivateKey, importPublicKey } from "../lib/PGP.mjs";
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import OperationError from "../errors/OperationError.mjs";
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import * as es6promisify from "es6-promisify";
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const promisify = es6promisify.default ? es6promisify.default.promisify : es6promisify.promisify;
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/**
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* PGP Encrypt and Sign operation
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*/
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class PGPEncryptAndSign extends Operation {
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/**
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* PGPEncryptAndSign constructor
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*/
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constructor() {
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super();
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this.name = "PGP Encrypt and Sign";
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this.module = "PGP";
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this.description = [
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"Input: the cleartext you want to sign.",
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"<br><br>",
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"Arguments: the ASCII-armoured private key of the signer (plus the private key password if necessary)",
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"and the ASCII-armoured PGP public key of the recipient.",
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"<br><br>",
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"This operation uses PGP to produce an encrypted digital signature.",
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"<br><br>",
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"Pretty Good Privacy is an encryption standard (OpenPGP) used for encrypting, decrypting, and signing messages.",
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"<br><br>",
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"This function uses the Keybase implementation of PGP.",
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].join("\n");
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this.infoURL = "https://wikipedia.org/wiki/Pretty_Good_Privacy";
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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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"name": "Private key of signer",
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"type": "text",
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"value": ""
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},
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{
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"name": "Private key passphrase",
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"type": "string",
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"value": ""
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},
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{
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"name": "Public key of recipient",
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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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* @throws {OperationError} if failure to sign message
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*/
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async run(input, args) {
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const message = input,
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[privateKey, passphrase, publicKey] = args;
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let signedMessage;
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if (!privateKey) throw new OperationError("Enter the private key of the signer.");
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if (!publicKey) throw new OperationError("Enter the public key of the recipient.");
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const privKey = await importPrivateKey(privateKey, passphrase);
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const pubKey = await importPublicKey(publicKey);
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try {
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signedMessage = await promisify(kbpgp.box)({
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"msg": message,
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"encrypt_for": pubKey,
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"sign_with": privKey,
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"asp": ASP
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});
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} catch (err) {
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throw new OperationError(`Couldn't sign message: ${err}`);
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}
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return signedMessage;
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}
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}
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export default PGPEncryptAndSign;
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