e95e22af50
This addresses - request for improvement for faster key setup in RT#3576; - clearing registers and stack in RT#3554 (this is more of a gesture to see if there will be some traction from compiler side); - more commentary around input parameters handling and stack layout (desired when RT#3553 was reviewed); - minor size and single block performance optimization (was lying around); Reviewed-by: Matt Caswell <matt@openssl.org> (cherry picked from commit 23f6eec71dbd472044db7dc854599f1de14a1f48)
This is an OpenSSL-compatible version of AES (also called Rijndael). aes_core.c is basically the same as rijndael-alg-fst.c but with an API that looks like the rest of the OpenSSL symmetric cipher suite.