lib/gnutls_cipher_int.h

   1 /*
   2  * Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2010 Free
   3  * Software Foundation, Inc.
   4  *
   5  * Author: Nikos Mavrogiannopoulos
   6  *
   7  * This file is part of GnuTLS.
   8  *
   9  * The GnuTLS is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public License
  11  * as published by the Free Software Foundation; either version 2.1 of
  12  * the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  22  * USA
  23  *
  24  */
  25
  26 #ifndef GNUTLS_CIPHER_INT
  27 #define GNUTLS_CIPHER_INT
  28
  29 #include <gnutls/crypto.h>
  30
  31 extern int crypto_cipher_prio;
  32 extern gnutls_crypto_cipher_st _gnutls_cipher_ops;
  33
  34 typedef int (*cipher_encrypt_func) (void *hd, const void *plaintext, size_t,
  35                                     void *ciphertext, size_t);
  36 typedef int (*cipher_decrypt_func) (void *hd, const void *ciphertext, size_t,
  37                                     void *plaintext, size_t);
  38 typedef void (*cipher_deinit_func) (void *hd);
  39
  40 typedef struct
  41 {
  42   void *handle;
  43   cipher_encrypt_func encrypt;
  44   cipher_decrypt_func decrypt;
  45   cipher_deinit_func deinit;
  46 } cipher_hd_st;
  47
  48 int _gnutls_cipher_init (cipher_hd_st *, gnutls_cipher_algorithm_t cipher,
  49                          const gnutls_datum_t * key,
  50                          const gnutls_datum_t * iv);
  51 int _gnutls_cipher_encrypt (const cipher_hd_st * handle, void *text,
  52                             int textlen);
  53 int _gnutls_cipher_decrypt (const cipher_hd_st * handle, void *ciphertext,
  54                             int ciphertextlen);
  55 int _gnutls_cipher_encrypt2 (const cipher_hd_st * handle, const void *text,
  56                              int textlen, void *ciphertext,
  57                              int ciphertextlen);
  58 int _gnutls_cipher_decrypt2 (const cipher_hd_st * handle,
  59                              const void *ciphertext, int ciphertextlen,
  60                              void *text, int textlen);
  61 void _gnutls_cipher_deinit (cipher_hd_st * handle);
  62
  63 #endif /* GNUTLS_CIPHER_INT */