-# ifndef EVP_CIPH_FLAG_AEAD_CIPHER
-# define EVP_CIPH_FLAG_AEAD_CIPHER 0x200000
-# define EVP_CTRL_AEAD_TLS1_AAD 0x16
-# define EVP_CTRL_AEAD_SET_MAC_KEY 0x17
-# endif
-
-/* FIXME: surely this is available elsewhere? */
-# define EVP_RC4_KEY_SIZE 16
-