Openssl evp functions are a high level interface to openssl crypto
functions and can use external crypto engines, hardware accelerator
and AES instruction set. It is more flexible than AES_encrypt.
There is up to 6x faster than the AES_cbc_encrypt implementation
on armv8 server with armv8 cryptographic extensions.
Signed-off-by: Hang Li <lihang48@hisilicon.com> Signed-off-by: luo rixin <luorixin@huawei.com>