CyberChef/src/core/operations/PGPEncryptAndSign.mjs

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/**
* @author tlwr [toby@toby.codes]
* @copyright Crown Copyright 2017
* @license Apache-2.0
*/
import Operation from "../Operation";
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import kbpgp from "kbpgp";
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import { ASP, importPrivateKey, importPublicKey } from "../lib/PGP";
import OperationError from "../errors/OperationError";
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import promisifyDefault from "es6-promisify";
const promisify = promisifyDefault.promisify;
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/**
* PGP Encrypt and Sign operation
*/
class PGPEncryptAndSign extends Operation {
/**
* PGPEncryptAndSign constructor
*/
constructor() {
super();
this.name = "PGP Encrypt and Sign";
this.module = "PGP";
this.description = "Input: the cleartext you want to sign.\n<br><br>\nArguments: the ASCII-armoured private key of the signer (plus the private key password if necessary)\nand the ASCII-armoured PGP public key of the recipient.\n<br><br>\nThis operation uses PGP to produce an encrypted digital signature.\n<br><br>\nPretty Good Privacy is an encryption standard (OpenPGP) used for encrypting, decrypting, and signing messages.\n<br><br>\nThis function uses the Keybase implementation of PGP.";
this.inputType = "string";
this.outputType = "string";
this.args = [
{
"name": "Private key of signer",
"type": "text",
"value": ""
},
{
"name": "Private key passphrase",
"type": "string",
"value": ""
},
{
"name": "Public key of recipient",
"type": "text",
"value": ""
}
];
}
/**
* @param {string} input
* @param {Object[]} args
* @returns {string}
*
* @throws {OperationError} if failure to sign message
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*/
async run(input, args) {
const message = input,
privateKey = args[0],
passphrase = args[1],
publicKey = args[2];
let signedMessage;
if (!privateKey) throw new OperationError("Enter the private key of the signer.");
if (!publicKey) throw new OperationError("Enter the public key of the recipient.");
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const privKey = await importPrivateKey(privateKey, passphrase);
const pubKey = await importPublicKey(publicKey);
try {
signedMessage = await promisify(kbpgp.box)({
"msg": message,
"encrypt_for": pubKey,
"sign_with": privKey,
"asp": ASP
});
} catch (err) {
throw new OperationError(`Couldn't sign message: ${err}`);
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}
return signedMessage;
}
}
export default PGPEncryptAndSign;