# RustCrypto: Block Cipher Traits
[![crate][crate-image]][crate-link]
[![Docs][docs-image]][docs-link]
![Apache2/MIT licensed][license-image]
![Rust Version][rustc-image]
[![Build Status][build-image]][build-link]
Traits which define functionality of [block ciphers].
See [RustCrypto/block-ciphers] for implementations which use this trait.
[Documentation][docs-link]
## Minimum Supported Rust Version
Rust **1.41** 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](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/block-cipher.svg
[crate-link]: https://crates.io/crates/block-cipher
[docs-image]: https://docs.rs/block-cipher/badge.svg
[docs-link]: https://docs.rs/block-cipher/
[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
[build-image]: https://github.com/RustCrypto/traits/workflows/block-cipher/badge.svg?branch=master&event=push
[build-link]: https://github.com/RustCrypto/traits/actions?query=workflow%3Ablock-cipher
[//]: # (general links)
[block ciphers]: https://en.wikipedia.org/wiki/Block_cipher
[RustCrypto/block-ciphers]: https://github.com/RustCrypto/block-ciphers