mceliece-legacy

Note

The variant of McEliece used in this package is no longer recommended. Instead prefer Classic McEliece, which is currently being evaluated for standardization as a NIST PQC Round 4 candidate. An implementation of Classic McEliece is provided by mceliece.

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Overview

The McEliece post-quantum asymmetric cypher compiled to WebAssembly using Emscripten. A simple JavaScript wrapper is provided to make McEliece easy to use in web applications.

The parameters are configured to slightly above 128-bit strength.

The underlying cypher implementation in use is McBits.

Example Usage

import {mceliece} from 'mceliece-legacy';

const keyPair /*: {privateKey: Uint8Array; publicKey: Uint8Array} */ =
	await mceliece.keyPair()
;

const plaintext /*: Uint8Array */ =
	new Uint8Array([104, 101, 108, 108, 111, 0]) // "hello"
;

const encrypted /*: Uint8Array */ =
	await mceliece.encrypt(plaintext, keyPair.publicKey)
;

const decrypted /*: Uint8Array */ =
	await mceliece.decrypt(encrypted, keyPair.privateKey) // same as plaintext
;

console.log(keyPair);
console.log(plaintext);
console.log(encrypted);
console.log(decrypted);

Note: McEliece is a low-level cryptographic primitive, not a high-level construct like libsodium's crypto_box. This module can be combined with a symmetric cypher and a MAC to provide such a construct, but you should avoid using mceliece directly for anything important if you lack the experience to do so.