2 - Rethink and possibly add verification of output buffer lengths.
3 In other words check whether the user won't cause a buffer overflow.
4 - Importing/exporting encrypted (passphrased) RSA keys
5 - Support for OCB mode was added in OpenSSL 1.1.0
6 - Remove debug function from examples
7 - yaca_key_wrap(), yaca_key_unwrap()
8 - We need a way to import keys encrypted with hw (or other) keys. New
9 function like yaca_key_load or sth?