fix typo in setting up prototypes. for server step, challenge is required so simplify.
fix typo in setting up prototypes. for server step, challenge is required so simplify.

bazineta/kerberos,dmansfield/kerberos,christkv/kerberos,dmansfield/kerberos,bazineta/kerberos,christkv/kerberos,bazineta/kerberos,dmansfield/kerberos,christkv/kerberos,dmansfield/kerberos,bazineta/kerberos,christkv/kerberos