OpenBSD /dev/crypto (this will be revamped later when the appropriate machinery
is available).

Change the EVP_somecipher() and EVP_somedigest()
functions to return constant EVP_MD and EVP_CIPHER
pointers.

Update docs.

Documentation correction.

Declare ciphers in terms of macros. This reduces
the amount of code and places each block cipher EVP
definition in a single file instead of being spread
over 4 files.