| # [RustCrypto]: Constant-Time Base16 (hexadecimal) |
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| [![crate][crate-image]][crate-link] |
| [![Docs][docs-image]][docs-link] |
| [![Build Status][build-image]][build-link] |
| ![Apache2/MIT licensed][license-image] |
| ![Rust Version][rustc-image] |
| [![Project Chat][chat-image]][chat-link] |
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| Pure Rust implementation of Base16 ([RFC 4648]). |
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| Implements lower and upper case Base16 variants without data-dependent branches |
| or lookup tables, thereby providing portable "best effort" constant-time |
| operation. |
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| Supports `no_std` environments and avoids heap allocations in the core API |
| (but also provides optional `alloc` support for convenience). |
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| [Documentation][docs-link] |
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| ## Minimum Supported Rust Version |
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| This crate requires **Rust 1.60** at a minimum. |
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| We may change the MSRV in the future, but it will be accompanied by a minor |
| version bump. |
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| ## License |
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| Licensed under either of: |
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| * [Apache License, Version 2.0](http://www.apache.org/licenses/LICENSE-2.0) |
| * [MIT license](http://opensource.org/licenses/MIT) |
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| at your option. |
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| ### Contribution |
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| 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) |
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| [crate-image]: https://buildstats.info/crate/base16ct |
| [crate-link]: https://crates.io/crates/base16ct |
| [docs-image]: https://docs.rs/base16ct/badge.svg |
| [docs-link]: https://docs.rs/base16ct/ |
| [build-image]: https://github.com/RustCrypto/formats/actions/workflows/base16ct.yml/badge.svg |
| [build-link]: https://github.com/RustCrypto/formats/actions/workflows/base16ct.yml |
| [license-image]: https://img.shields.io/badge/license-Apache2.0/MIT-blue.svg |
| [rustc-image]: https://img.shields.io/badge/rustc-1.60+-blue.svg |
| [chat-image]: https://img.shields.io/badge/zulip-join_chat-blue.svg |
| [chat-link]: https://rustcrypto.zulipchat.com/#narrow/stream/300570-formats |
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| [//]: # (links) |
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| [RustCrypto]: https://github.com/rustcrypto |
| [RFC 4648]: https://tools.ietf.org/html/rfc4648 |
| [Util::Lookup]: https://arxiv.org/pdf/2108.04600.pdf |
