krb5_tkt_authent
krb5_tkt_authent tktauthent;
krb5_auth_to_rep(krb5_context context, krb5_tkt_authent *auth, krb5_donot_replay *rep)
krb5_tkt_authent *,
(krb5_context, krb5_tkt_authent *);
krb5_free_tkt_authent(krb5_context context, krb5_tkt_authent *val)