Pure Rust implementation of the belt-kwp key wrapping algorithm defined in STB 4.101.31-2020.
use hex_literal::hex;
use belt_kwp::cipher::KeyInit;
let x: [u8; 32] = hex!(
"B194BAC8 0A08F53B 366D008E 584A5DE4"
"8504FA9D 1BB6C7AC 252E72C2 02FDCE0D"
);
let i: [u8; 16] = hex!("5BE3D612 17B96181 FE6786AD 716B890B");
let k: [u8; 32] = hex!(
"E9DEE72C 8F0C0FA6 2DDB49F4 6F739647"
"06075316 ED247A37 39CBA383 03A98BF6"
);
let y: [u8; 48] = hex!(
"49A38EE1 08D6C742 E52B774F 00A6EF98"
"B106CBD1 3EA4FB06 80323051 BC04DF76"
"E487B055 C69BCF54 1176169F 1DC9F6C8"
);
let mut buf = [0u8; 48];
let kw = belt_kwp::BeltKwp::new(&k.into());
let wrapped_key = kw.wrap_key(&x, &i, &mut buf).unwrap();
assert_eq!(wrapped_key, y);
let unwrapped_key = kw.unwrap_key(&y, &i, &mut buf).unwrap();
assert_eq!(unwrapped_key, x);
// If key size is known at compile time, you can use the fixed methods:
use belt_kwp::cipher::consts::U32;
let wrapped_key = kw.wrap_fixed_key::<U32>(&x.into(), &i);
assert_eq!(wrapped_key, y);
let unwrapped_key = kw.unwrap_fixed_key::<U32>(&wrapped_key, &i).unwrap();
assert_eq!(unwrapped_key, x);This crate requires Rust 1.81 at a minimum.
We may change the MSRV in the future, but it will be accompanied by a minor version bump.
Licensed under either of:
at your option.
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.