2 cipher.h -- header file cipher.c
3 Copyright (C) 2007-2013 Guus Sliepen <guus@tinc-vpn.org>
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.
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.
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.
20 #ifndef __TINC_CIPHER_H__
21 #define __TINC_CIPHER_H__
23 #define CIPHER_MAX_BLOCK_SIZE 32
24 #define CIPHER_MAX_IV_SIZE 16
25 #define CIPHER_MAX_KEY_SIZE 32
27 #ifndef DISABLE_LEGACY
29 typedef struct cipher cipher_t;
31 extern cipher_t *cipher_open_by_name(const char *) __attribute__ ((__malloc__));
32 extern cipher_t *cipher_open_by_nid(int) __attribute__ ((__malloc__));
33 extern cipher_t *cipher_open_blowfish_ofb(void) __attribute__ ((__malloc__));
34 extern void cipher_close(cipher_t *);
35 extern size_t cipher_keylength(const cipher_t *);
36 extern void cipher_get_key(const cipher_t *, void *);
37 extern bool cipher_set_key(cipher_t *, void *, bool) __attribute__ ((__warn_unused_result__));
38 extern bool cipher_set_key_from_rsa(cipher_t *, void *, size_t, bool) __attribute__ ((__warn_unused_result__));
39 extern bool cipher_encrypt(cipher_t *, const void *indata, size_t inlen, void *outdata, size_t *outlen, bool oneshot) __attribute__ ((__warn_unused_result__));
40 extern bool cipher_decrypt(cipher_t *, const void *indata, size_t inlen, void *outdata, size_t *outlen, bool oneshot) __attribute__ ((__warn_unused_result__));
41 extern int cipher_get_nid(const cipher_t *);
42 extern bool cipher_active(const cipher_t *);