#hex #base-16 #constant-time #portable #rfc #embedded-friendly

no-std base16ct

Pure Rust implementation of Base16 a.k.a hexadecimal (RFC 4648) which avoids any usages of data-dependent branches/LUTs and thereby provides portable "best effort" constant-time operation and embedded-friendly no_std support

3 unstable releases

0.2.0 Feb 26, 2023
0.1.1 Jan 15, 2022
0.1.0 Jan 13, 2022
0.0.0 Jan 11, 2022

#2195 in Encoding

Download history 508044/week @ 2024-07-01 556293/week @ 2024-07-08 527491/week @ 2024-07-15 573347/week @ 2024-07-22 572995/week @ 2024-07-29 568590/week @ 2024-08-05 597217/week @ 2024-08-12 583003/week @ 2024-08-19 581852/week @ 2024-08-26 588977/week @ 2024-09-02 591142/week @ 2024-09-09 559601/week @ 2024-09-16 592098/week @ 2024-09-23 605021/week @ 2024-09-30 642472/week @ 2024-10-07 652571/week @ 2024-10-14

2,521,089 downloads per month
Used in 3,364 crates (70 directly)

Apache-2.0 OR MIT

17KB
224 lines

RustCrypto: Constant-Time Base16 (hexadecimal)

crate Docs Build Status Apache2/MIT licensed Rust Version Project Chat

Pure Rust implementation of Base16 (RFC 4648).

Implements lower and upper case Base16 variants without data-dependent branches or lookup tables, thereby providing portable "best effort" constant-time operation.

Supports no_std environments and avoids heap allocations in the core API (but also provides optional alloc support for convenience).

Documentation

Minimum Supported Rust Version

This crate requires Rust 1.60 at a minimum.

We may change the MSRV in the future, but it will be accompanied by a minor version bump.

License

Licensed under either of:

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.

No runtime deps

Features