# SHA2 Compress Function

Pure Rust implementation of SHA2 compress functions.

- [x] SHA256
- [x] SHA224
- [x] SHA512
- [x] SHA384
- [x] SHA512/256
- [x] SHA512/224    

## TODO

Investigate

- https://en.wikipedia.org/wiki/Intel_SHA_extensions and
- https://developer.arm.com/documentation/ddi0500/e/functional-description/about-the-cortex-a53-processor-functions/cryptography-extension