AES256_KEY_LENGTH
derived_keylen = AES256_KEY_LENGTH;
uint8_t vc3_encrypt_key[AES256_KEY_LENGTH];
uint8_t vc3_decrypt_key[AES256_KEY_LENGTH];
derived_keylen = AES256_KEY_LENGTH;
keylen = AES256_KEY_LENGTH;
keylen = AES256_KEY_LENGTH;
keylen = AES256_KEY_LENGTH;
keylen = AES256_KEY_LENGTH;