tree bf19136cb8b2b09224cfd28e883d22b6b2ef3fd0
parent 6a8ca33fa571802db5b10d5c9041e7df1ec2ca25
author Manuel Pégourié-Gonnard <mpg@elzevir.fr> 1432808089 +0200
committer Manuel Pégourié-Gonnard <mpg@elzevir.fr> 1432823105 +0200

Make SHA-2 implementation smaller

Adjust the size/performance trade-off:
* Reduces size of sha256_process() from 7.4KB to 2KB on ARMv7-M
* Reduces performance by less than 14% on Cortex-M4
* Seems to even improve performance on my Core i7