fork-openpgpjs/test/security/message_signature_bypass.js
2023-02-21 18:27:56 +01:00

105 lines
4.4 KiB
JavaScript

const { use: chaiUse, expect } = require('chai');
chaiUse(require('chai-as-promised'));
const openpgp = typeof window !== 'undefined' && window.openpgp ? window.openpgp : require('../..');
const util = require('../../src/util');
const { readKey, readCleartextMessage, SignaturePacket } = openpgp;
/**
* public key of another user.
*/
const OTHERPUBKEY = `
-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: OpenPGP.js VERSION
Comment: https://openpgpjs.org
xsBNBFuqNY0BCADFUCnl03vimEQRs7mtDIp0g6tItuguhJJu1/QjXwTXUHZg
pZosOPkGOR1EubydjYz4kvAnZ5r9cWA4xQ96rBdvj/kIaP+oJKLB1jXwh4Ft
+8YT4mVU2yWLu7U2p4tSyRoM5VCDEqG64OcbZMwEdDKf8t6JTjYTtEfPfW5R
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hRtKTRVJV/wTnkao2MLcq/hgOfhO28NjnxVlX06O/XTWdElA7CCi1Zg1/BZ+
r2XuuE1J2DjERfTokFzkKnMlGK9zXn0LxPnAJAIfu33/SFuAZcVu4UEJABEB
AAHNHVRlc3RpIFRlc3QgPHRlc3RAZXhhbXBsZS5jb20+wsB1BBABCAApBQJb
qjWcBgsJBwgDAgkQVSCLLRis484EFQgKAgMWAgECGQECGwMCHgEAAGNXB/4g
DX082p83RfMmBv8hRN1V9ruPAvlxDWNBHb5dc1Y67yrBXOLMtaSauSZKrbf1
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FKgCq7XTgJ61UYNhc31bLH0eVcfCkAExfwqZlwTWRzRSCqr0NL0XZVakJE6F
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l8jsa+p6ooBYPotnLQ9fdd457JMoc8jDHf4m+P9/ZiWpycCB0DgUtNw1wH2T
DHYf+2lfGGoA3osuHeJJfZfJujbKW5L7ZMNJ23tSzsBNBFuqNY0BB/9XKYzS
PdHC/dXoBC9un3YLCcUX6LMNnaQMryVONYKFE1Rt0/si9XtnIDqyBrTr3LRi
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ezafNwlUUNnXyYRuC3P4h66OIJcDPcfaao3uAuJ/C81E8ttuws3c08kudd/A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=nMyV
-----END PGP PUBLIC KEY BLOCK-----`;
/**
* an original unmodified message as a template.
*/
const ORIGINAL = `
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
You owe me € 10
-----BEGIN PGP SIGNATURE-----
Version: OpenPGP.js VERSION
Comment: https://openpgpjs.org
wsBcBAEBCAAQBQJbq0iICRBVIIstGKzjzgAAeV0H/3ZxWuEV+2PNXHR+PdxX
WRxjk6Zu+jjpb/iRS8IynRoe3iDaai3+iiAHM1GsHvOIBVJU6Bjx1ZyyEI0a
dDg/yj3LBqBW9U3AiGpsXPfuyLKYIHfPbrygEleRIQKh7+iwNmn9ScVvzJrl
hUurlZxx1mWbERAchwsrcZpwFCdfjJ/C9sblTxgnsm1YlYZNkf95DFtRnVO5
prUuOjqJ0bA7bxg5GA4FQskRPIQ0ioZ6DyDi2IU3rdVEOs2Pc8S0EsD9K7af
vO5oXKiJsyUN5EXEI8kYRulP1l0kvEWVTlnY2ek1qS637RkBI+DHLcXV5Hcu
fhGyl7nA7UCwgsqf7ZPBhRg=
=nbjQ
-----END PGP SIGNATURE-----`;
async function getOtherPubKey() {
return readKey({ armoredKey: OTHERPUBKEY });
}
/**
* The "standalone" signature signed by the victim.
*/
const STANDALONE_PKT = util.hexToUint8Array('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');
async function fakeSignature() {
// read the template and modify the text to
// invalidate the signature.
let fake = await readCleartextMessage({
cleartextMessage: ORIGINAL.replace(
'You owe me',
'I owe you')
});
// read the standalone signature packet
const tmp = new SignaturePacket();
await tmp.read(STANDALONE_PKT);
// replace the "text" signature with the
// "standalone" signature
fake.signature.packets[0] = tmp;
const faked_armored = await fake.armor();
// re-read the message to eliminate any
// behaviour due to cached values.
fake = await readCleartextMessage({ cleartextMessage: faked_armored });
// faked message now verifies correctly
const res = await openpgp.verify({
message: fake,
verificationKeys: await getOtherPubKey()
});
const { signatures } = res;
expect(signatures).to.have.length(0);
}
module.exports = () => it('Does not accept non-binary/text signatures', fakeSignature);