Self-contained C11 SHA-2 implementation.
Features:
* Self-contained (no external dependencies)
* C11 only (platform-agnostic)
* MIT-licensed
* Includes test vectors (via make test
)
Includes implementations of the following: * SHA-224 * SHA-256 * SHA-384 * SHA-512 * HMAC-SHA-256 * HMAC-SHA-512
Usage
See tests.c
for usage.
Use make test
to run the test vectors.
Benchmarks
Benchmarks.
Partially unrolled compression makes this implementation faster than coreutils, but slower than the assembly-optimized, architecture and family-specific OpenSSL implementation.
> time -p ./sha256 ~/Videos/8x*avi > /dev/null
rleal 9.39
user 9.10
sys 0.29
> time -p sha256sum ~/Videos/8x*avi > /dev/null
real 12.04
user 11.73
sys 0.31
> time -p openssl sha256 ~/Videos/8x*avi > /dev/null
real 6.36
user 6.01
sys 0.32