+/*
+ cipher.h -- header file cipher.c
+ Copyright (C) 2007-2013 Guus Sliepen <guus@tinc-vpn.org>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along
+ with this program; if not, write to the Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#ifndef __TINC_CIPHER_H__
+#define __TINC_CIPHER_H__
+
+#define CIPHER_MAX_BLOCK_SIZE 32
+#define CIPHER_MAX_IV_SIZE 16
+#define CIPHER_MAX_KEY_SIZE 32
+
+typedef struct cipher cipher_t;
+
+extern cipher_t *cipher_open_by_name(const char *);
+extern cipher_t *cipher_open_by_nid(int);
+extern cipher_t *cipher_open_blowfish_ofb(void);
+extern void cipher_close(cipher_t *);
+extern size_t cipher_keylength(const cipher_t *);
+extern void cipher_get_key(const cipher_t *, void *);
+extern bool cipher_set_key(cipher_t *, void *, bool);
+extern bool cipher_set_key_from_rsa(cipher_t *, void *, size_t, bool);
+extern bool cipher_set_counter(cipher_t *, const void *, size_t);
+extern bool cipher_set_counter_key(cipher_t *, void *);
+extern bool cipher_encrypt(cipher_t *, const void *indata, size_t inlen, void *outdata, size_t *outlen, bool oneshot);
+extern bool cipher_decrypt(cipher_t *, const void *indata, size_t inlen, void *outdata, size_t *outlen, bool oneshot);
+extern bool cipher_counter_xor(cipher_t *, const void *indata, size_t inlen, void *outdata);
+extern int cipher_get_nid(const cipher_t *);
+extern bool cipher_active(const cipher_t *);
+
+
+#endif