Implementation of the FIPS 180-4 SHA-256 algorithm in ARM 64-bit assembly language https://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.180-4.pdf
For better readability of the source code:
Aliases are used for all registers -> see file 'aliases'
Macros encapsulate frequently recurring commands and boilerplate for function declaration, functions for preprocessing (padding), sha-functions, message parsing, and hash computation -> see file 'macro.sx'
C-interface for the public function in sha256.sx -> sha256.h
Unit tests: see sha256tests.c and sha256tests.h
Developed on a RaspberryPi 4 (Broadcom BCM2711, Quad core Cortex-A72 (ARM v8) 64-bit SoC @ 1.5GHz) with Raspberry Pi OS