POLYVAL: fast universal hash function and MAC
POLYVAL (RFC 8452) is a universal hash function which operates over GF(2^128) and can be used for constructing a Message Authentication Code (MAC).
Its primary intended use is for implementing AES-GCM-SIV, however it is closely related to GHASH and therefore can also be used to implement AES-GCM at no cost to performance on little endian architectures.
Security Warning
No security audits of this crate have ever been performed, and it has not been thoroughly assessed to ensure its operation is constant-time on common CPU architectures.
USE AT YOUR OWN RISK!
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.