/**
 * @file re_aes.h Interface to AES (Advanced Encryption Standard)
 *
 * Copyright (C) 2010 Creytiv.com
 */


#ifndef AES_BLOCK_SIZE
#define AES_BLOCK_SIZE 16
#endif

/** AES mode */
enum aes_mode {
	AES_MODE_CTR  /**< AES Counter mode (CTR) */
};

struct aes;

int  aes_alloc(struct aes **stp, enum aes_mode mode,
	       const uint8_t *key, size_t key_bits,
	       const uint8_t iv[AES_BLOCK_SIZE]);
void aes_set_iv(struct aes *aes, const uint8_t iv[AES_BLOCK_SIZE]);
int  aes_encr(struct aes *aes, uint8_t *out, const uint8_t *in, size_t len);
int  aes_decr(struct aes *aes, uint8_t *out, const uint8_t *in, size_t len);