# RustCrypto: CCM
[![crate][crate-image]][crate-link]
[![Docs][docs-image]][docs-link]
![Apache2/MIT licensed][license-image]
![Rust Version][rustc-image]
[![CodeCov Status][codecov-image]][codecov-link]
[![Build Status][build-image]][build-link]
Pure Rust implementation of the Counter with CBC-MAC ([CCM]) mode ([RFC 3610]): an
Authenticated Encryption with Associated Data ([AEAD]) algorithm generic over
block ciphers with block size equal to 128 bits.
[Documentation][docs-link]
## Security Notes
No security audits of this crate have ever been performed, and it has not been
thoroughly assessed to ensure its operation is constant-time on common CPU
architectures.
USE AT YOUR OWN RISK!
## License
Licensed under either of:
* [Apache License, Version 2.0](http://www.apache.org/licenses/LICENSE-2.0)
* [MIT license](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.
[//]: # (badges)
[crate-image]: https://img.shields.io/crates/v/ccm.svg
[crate-link]: https://crates.io/crates/ccm
[docs-image]: https://docs.rs/ccm/badge.svg
[docs-link]: https://docs.rs/ccm
[license-image]: https://img.shields.io/badge/license-Apache2.0/MIT-blue.svg
[rustc-image]: https://img.shields.io/badge/rustc-1.41+-blue.svg
[codecov-image]: https://codecov.io/gh/RustCrypto/AEADs/branch/master/graph/badge.svg
[codecov-link]: https://codecov.io/gh/RustCrypto/AEADs
[build-image]: https://github.com/RustCrypto/AEADs/workflows/ccm/badge.svg?branch=master&event=push
[build-link]: https://github.com/RustCrypto/AEADs/actions
[//]: # (general links)
[RFC 3610]: https://tools.ietf.org/html/rfc3610
[CCM]: https://en.wikipedia.org/wiki/CCM_mode
[AEAD]: https://en.wikipedia.org/wiki/Authenticated_encryption