src/common/aes.h

   1 /* Copyright 2003 Roger Dingledine
   2  * Copyright 2004-2006 Roger Dingledine, Nick Mathewson */
   3 /* See LICENSE for licensing information */
   4 /* $Id$ */
   5
   6 /* Implements a minimal interface to counter-mode AES. */
   7
   8 #ifndef __AES_H
   9 #define __AES_H
  10 #define AES_H_ID "$Id$"
  11
  12 /**
  13  * \file aes.h
  14  * \brief Headers for aes.c
  15  */
  16
  17 #include "../common/torint.h"
  18
  19 struct aes_cnt_cipher;
  20 typedef struct aes_cnt_cipher aes_cnt_cipher_t;
  21
  22 aes_cnt_cipher_t* aes_new_cipher(void);
  23 void aes_free_cipher(aes_cnt_cipher_t *cipher);
  24 void aes_set_key(aes_cnt_cipher_t *cipher, const char *key, int key_bits);
  25 void aes_crypt(aes_cnt_cipher_t *cipher, const char *input, size_t len,
  26                char *output);
  27 uint64_t aes_get_counter(aes_cnt_cipher_t *cipher);
  28 void aes_set_counter(aes_cnt_cipher_t *cipher, uint64_t counter);
  29 void aes_adjust_counter(aes_cnt_cipher_t *cipher, long delta);
  30
  31 #endif
  32