#crypto #block-cipher #educational #skipjack

no-std skipjack_rs

Pure Rust software implementation of the SKIPJACK codebook encryptor/decryptor Algorithm

1 unstable release

Uses new Rust 2021

0.1.0 Apr 17, 2022

#820 in Cryptography

MIT/Apache

670KB
107 lines

SKIPJACK

Pure Rust implementation of the SKIPJACK cipher.

SECURITY WARNING

SKIPJACK is a broken and outdated cipher. This implementation should be used for educational purposes ONLY. It should NEVER be used in a production environment and the author WILL NOT take on responsibility for damage caused by irresponsible usage of this library!

USE AT YOUR OWN RISK!

Implementation

This crate implements the low-level cipher functions of the SkipJack cipher. It supports a better optimized encryption/decryption of 64-bit blocks than the approach specified by the original SkipJack specification.

There are benchmarks available in /benches/.

Examples

use skipjack_rs::*;
let skipjack: Skipjack =
    Skipjack::new([0x00, 0x99, 0x88, 0x77, 0x66, 0x55, 0x44, 0x33, 0x22, 0x11].into());
let mut buf = [0x3322, 0x1100, 0xddcc, 0xbbaa].into();
skipjack.encrypt(&mut buf);
assert_eq!(buf, [0x2587, 0xcae2, 0x7a12, 0xd300].into());
let skipjack: Skipjack =
    Skipjack::new([0x00, 0x99, 0x88, 0x77, 0x66, 0x55, 0x44, 0x33, 0x22, 0x11].into());
let mut buf = [0x2587, 0xcae2, 0x7a12, 0xd300].into();
skipjack.decrypt(&mut buf);
assert_eq!(buf, [0x3322, 0x1100, 0xddcc, 0xbbaa].into());

Licenses

This crate is licensed under either of

at your choice.

Dependencies