MAX_KEYLEN
u8 authkey[MAX_KEYLEN];
u8 enckey[MAX_KEYLEN];
unsigned long *retry_key = NULL, key[MAX_KEYLEN];
unsigned long key[MAX_KEYLEN];
unsigned long dup[MAX_KEYLEN];
u32 key[MAX_KEYLEN];
keylen / sizeof(u32) > MAX_KEYLEN ||