a2ac429da2
if $(EXHEADER) is empty. Notified by many, solution suggested by Carson Gaspar <carson@taltos.org>
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.