RustCrypto: belt-mac

Pure Rust implementation of [belt-mac].

Example

```rust use beltmac::{BeltMac, Mac}; use hexliteral::hex;

let key = [0x42; 32]; let msg = b"input message"; let expected_tag = hex!("9f5c9623b4eff8802195e81bcd841959");

// To get the authentication code: let mut mac: BeltMac = BeltMac::newfromslice(&key).unwrap(); mac.update(msg); let tag = mac.finalize(); let tagbytes = tag.intobytes(); asserteq!(&tagbytes[..], &expected_tag[..]);

// To verify the message: let mut mac: BeltMac = BeltMac::newfromslice(&key).unwrap(); mac.update(b"input message"); mac.verify(&tag_bytes).unwrap(); ```

Minimum Supported Rust Version

Rust 1.57 or higher.

Minimum supported Rust version can be changed in the future, but it will be done with a minor version bump.

SemVer Policy

• All on-by-default features of this library are covered by SemVer
• MSRV is considered exempt from SemVer as noted above

License

Licensed under either of:

• Apache License, Version 2.0
• MIT license

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.