and one nonsingular matrix SInv given as two arrays
RP1[] and RP5[] of 160 uint8_ts.
*/
-extern mqq160_sign_key_t testkey_P;
+extern const mqq160_sign_key_t testkey_P;
void mqq_load_pgm_key(void* buffer, mqq160_sign_key_t* key, const mqq160_sign_key_t* key_P);