highwayhash-rs

Rust Bindings to AVX2-optimized SIP-like hash functions. This crate offers bindings to three hash functions implemented in C++ here:

• siphash: A portable implementation of the SIP hash function, that is about 2 times faster than the reference implementation.
• siphash13: A faster but weaker variant of siphash.
• highwayhash64: A new hash that mixes the inputs using AVX2 instructions. It is about 5 times faster than siphash. A preliminary cryptanalysis is given here.

For highwayhash64 there are three implementations: one using AVX2, another one using SSE4.1 and a third one that is portable by not relying on specific instruction sets. To profit from the faster implementations, make sure to enable the instruction sets at compile time using RUSTFLAGS="-C target-cpu=native" or similar.

Status

The bindings are in an early state. They currently should work on Unix, but are only tested on Linux. make and a C++ compiler are required to build the underlying C++ library. A nightly Rust compiler is required.

License

Licensed under either of

• Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or 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.