1 /*
2  * ProFTPD - mod_sftp MAC mgmt
3  * Copyright (c) 2008-2017 TJ Saunders
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
16  * along with this program; if not, write to the Free Software
17  * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA.
18  *
19  * As a special exemption, TJ Saunders and other respective copyright holders
20  * give permission to link this program with OpenSSL, and distribute the
21  * resulting executable, without including the source code for OpenSSL in the
22  * source distribution.
23  */
24 
25 #ifndef MOD_SFTP_MAC_H
26 #define MOD_SFTP_MAC_H
27 
28 #include "mod_sftp.h"
29 #include "packet.h"
30 
31 int sftp_mac_init(void);
32 int sftp_mac_free(void);
33 
34 /* Returns the block size of the negotiated MAC algorithm, or 0 if no MAC
35  * has been negotiated yet.
36  */
37 size_t sftp_mac_get_block_size(void);
38 void sftp_mac_set_block_size(size_t);
39 
40 const char *sftp_mac_get_read_algo(void);
41 int sftp_mac_set_read_algo(const char *);
42 int sftp_mac_set_read_key(pool *, const EVP_MD *, const BIGNUM *, const char *,
43   uint32_t, int);
44 int sftp_mac_read_data(struct ssh2_packet *);
45 
46 const char *sftp_mac_get_write_algo(void);
47 int sftp_mac_set_write_algo(const char *);
48 int sftp_mac_set_write_key(pool *, const EVP_MD *, const BIGNUM *, const char *,
49   uint32_t, int);
50 int sftp_mac_write_data(struct ssh2_packet *);
51 
52 #endif /* MOD_SFTP_MAC_H */
53