release/src/router/tinc/src/cipher.h

   1 /*
   2     cipher.h -- header file cipher.c
   3     Copyright (C) 2007-2013 Guus Sliepen <guus@tinc-vpn.org>
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License along
  16     with this program; if not, write to the Free Software Foundation, Inc.,
  17     51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #ifndef __TINC_CIPHER_H__
  21 #define __TINC_CIPHER_H__
  22
  23 #define CIPHER_MAX_BLOCK_SIZE 32
  24 #define CIPHER_MAX_IV_SIZE 16
  25 #define CIPHER_MAX_KEY_SIZE 32
  26
  27 typedef struct cipher cipher_t;
  28
  29 extern cipher_t *cipher_open_by_name(const char *) __attribute__ ((__malloc__));
  30 extern cipher_t *cipher_open_by_nid(int) __attribute__ ((__malloc__));
  31 extern cipher_t *cipher_open_blowfish_ofb(void) __attribute__ ((__malloc__));
  32 extern void cipher_close(cipher_t *);
  33 extern size_t cipher_keylength(const cipher_t *);
  34 extern void cipher_get_key(const cipher_t *, void *);
  35 extern bool cipher_set_key(cipher_t *, void *, bool) __attribute__ ((__warn_unused_result__));
  36 extern bool cipher_set_key_from_rsa(cipher_t *, void *, size_t, bool) __attribute__ ((__warn_unused_result__));
  37 extern bool cipher_encrypt(cipher_t *, const void *indata, size_t inlen, void *outdata, size_t *outlen, bool oneshot) __attribute__ ((__warn_unused_result__));
  38 extern bool cipher_decrypt(cipher_t *, const void *indata, size_t inlen, void *outdata, size_t *outlen, bool oneshot) __attribute__ ((__warn_unused_result__));
  39 extern int cipher_get_nid(const cipher_t *);
  40 extern bool cipher_active(const cipher_t *);
  41
  42 #endif