fpe

This crate contains pure-Rust implementations of format-preserving encryption algorithms.

The following algorithms are implemented:

• FF1 (specified in NIST Special Publication 800-38G).

This crate requires Rust version 1.49 or greater.

License

Licensed under either of

• Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

lib.rs:

Format-preserving encryption algorithms.

Example

extern crate aes;
extern crate fpe;

use aes::Aes256;
use fpe::ff1::{BinaryNumeralString, FF1};

let key = [0; 32];
let radix = 2;
let pt = [0xab, 0xcd, 0xef];

let ff = FF1::<Aes256>::new(&key, radix).unwrap();
let ct = ff.encrypt(&[], &BinaryNumeralString::from_bytes_le(&pt)).unwrap();
assert_eq!(ct.to_bytes_le(), [0x75, 0xfb, 0x62]);

let p2 = ff.decrypt(&[], &ct).unwrap();
assert_eq!(p2.to_bytes_le(), pt);