src/common/aes.h

   1 /* Copyright 2003 Roger Dingledine */
   2 /* See LICENSE for licensing information */
   3 /* $Id$ */
   4
   5 /* Implements a minimal interface to counter-mode AES. */
   6
   7 #ifndef __AES_H
   8 #define __AES_H
   9
  10 #include "../common/torint.h"
  11
  12 struct aes_cnt_cipher;
  13 typedef struct aes_cnt_cipher aes_cnt_cipher_t;
  14
  15 aes_cnt_cipher_t* aes_new_cipher();
  16 void aes_free_cipher(aes_cnt_cipher_t *cipher);
  17 void aes_set_key(aes_cnt_cipher_t *cipher, unsigned char *key, int key_bits);
  18 void aes_crypt(aes_cnt_cipher_t *cipher, char *input, int len, char *output);
  19 uint64_t aes_get_counter(aes_cnt_cipher_t *cipher);
  20 void aes_set_counter(aes_cnt_cipher_t *cipher, uint64_t counter);
  21 void aes_adjust_counter(aes_cnt_cipher_t *cipher, long delta);
  22
  23 #endif