aes.h

/** \file aes.h
  *
  * \brief This describes functions exported by aes.c.
  *
  * To use these functions, take an encryption key and use aesExpandKey() to
  * expand it. Then use the expanded key in aesEncrypt() or aesDecrypt(),
  * which turn a 16 byte plaintext into a 16 byte ciphertext (or vice versa).
  *
  * This file is licensed as described by the file LICENCE.
  */

#ifndef AES_H_INCLUDED
#define AES_H_INCLUDED

#include "common.h"

/** Size of expanded key, in bytes. */
#define EXPANDED_KEY_SIZE	176

extern void xor16Bytes(uint8_t *r, uint8_t *op1);
extern void aesExpandKey(uint8_t *expanded_key, uint8_t *key);
extern void aesEncrypt(uint8_t *out, uint8_t *in, uint8_t *expanded_key);
extern void aesDecrypt(uint8_t *out, uint8_t *in, uint8_t *expanded_key);

#endif // #ifndef AES_H_INCLUDED