61 lines
2.1 KiB
Markdown
61 lines
2.1 KiB
Markdown
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# [RustCrypto]: Constant-Time Base16 (hexadecimal)
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[![crate][crate-image]][crate-link]
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[![Docs][docs-image]][docs-link]
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[![Build Status][build-image]][build-link]
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![Apache2/MIT licensed][license-image]
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![Rust Version][rustc-image]
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[![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
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or lookup tables, thereby providing portable "best effort" constant-time
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operation.
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Supports `no_std` environments and avoids heap allocations in the core API
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(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
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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)
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* [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
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for inclusion in the work by you, as defined in the Apache-2.0 license, shall be
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dual licensed as above, without any additional terms or conditions.
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[//]: # (badges)
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[crate-image]: https://buildstats.info/crate/base16ct
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[crate-link]: https://crates.io/crates/base16ct
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[docs-image]: https://docs.rs/base16ct/badge.svg
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[docs-link]: https://docs.rs/base16ct/
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[build-image]: https://github.com/RustCrypto/formats/actions/workflows/base16ct.yml/badge.svg
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[build-link]: https://github.com/RustCrypto/formats/actions/workflows/base16ct.yml
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[license-image]: https://img.shields.io/badge/license-Apache2.0/MIT-blue.svg
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[rustc-image]: https://img.shields.io/badge/rustc-1.60+-blue.svg
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[chat-image]: https://img.shields.io/badge/zulip-join_chat-blue.svg
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[chat-link]: https://rustcrypto.zulipchat.com/#narrow/stream/300570-formats
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[//]: # (links)
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[RustCrypto]: https://github.com/rustcrypto
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[RFC 4648]: https://tools.ietf.org/html/rfc4648
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[Util::Lookup]: https://arxiv.org/pdf/2108.04600.pdf
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