-static int env_aes_cbc_crypt(env_t *env, const int enc)
-{
- unsigned char *data = env->data;
- uint8_t *key;
- uint8_t key_exp[AES_EXPAND_KEY_LENGTH];
- uint32_t aes_blocks;
-
- key = env_aes_cbc_get_key();
- if (!key)
- return -EINVAL;
-
- /* First we expand the key. */
- aes_expand_key(key, key_exp);
-
- /* Calculate the number of AES blocks to encrypt. */
- aes_blocks = ENV_SIZE / AES_KEY_LENGTH;
-
- if (enc)
- aes_cbc_encrypt_blocks(key_exp, data, data, aes_blocks);
- else
- aes_cbc_decrypt_blocks(key_exp, data, data, aes_blocks);
-
- return 0;
-}
-#else
-static inline int env_aes_cbc_crypt(env_t *env, const int enc)
-{
- return 0;
-}
-#endif
-