deprecated.
o All of the low level AES, Blowfish, Camellia, CAST, DES, IDEA, RC2,
RC4, RC5 and SEED cipher functions have been deprecated.
+ o All of the low level DH, DSA, ECDH, ECDSA and RSA public key functions
+ have been deprecated.
Major changes between OpenSSL 1.1.1 and OpenSSL 1.1.1a [20 Nov 2018]