k5_privsafe_check_replay
k5_privsafe_check_replay(krb5_context context, krb5_auth_context authcon,
ret = k5_privsafe_check_replay(context, authcon, NULL, &enc, NULL);
ret = k5_privsafe_check_replay(context, authcon, NULL, &enc, NULL);
ret = k5_privsafe_check_replay(context, authcon, NULL, NULL, &cksum);
ret = k5_privsafe_check_replay(context, authcon, &rdata,
ret = k5_privsafe_check_replay(context, authcon, &rdata, &enc, NULL);
ret = k5_privsafe_check_replay(context, authcon, &rdata, NULL, cksum);