1/*
2 * Dropbear - a SSH2 server
3 *
4 * Copyright (c) 2002,2003 Matt Johnston
5 * All rights reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 * SOFTWARE. */
24
25#ifndef _DSS_H_
26#define _DSS_H_
27
28#include "includes.h"
29#include "buffer.h"
30
31#ifdef DROPBEAR_DSS
32
33#define DSS_SIGNATURE_SIZE 4+SSH_SIGNKEY_DSS_LEN+4+2*SHA1_HASH_SIZE
34
35struct DSS_key {
36
37	mp_int* p;
38	mp_int* q;
39	mp_int* g;
40	mp_int* y;
41	mp_int* x;
42
43};
44
45typedef struct DSS_key dss_key;
46
47void buf_put_dss_sign(buffer* buf, dss_key *key, const unsigned char* data,
48		unsigned int len);
49#ifdef DROPBEAR_SIGNKEY_VERIFY
50int buf_dss_verify(buffer* buf, dss_key *key, const unsigned char* data,
51		unsigned int len);
52#endif
53int buf_get_dss_pub_key(buffer* buf, dss_key *key);
54int buf_get_dss_priv_key(buffer* buf, dss_key *key);
55void buf_put_dss_pub_key(buffer* buf, dss_key *key);
56void buf_put_dss_priv_key(buffer* buf, dss_key *key);
57void dss_key_free(dss_key *key);
58
59#endif /* DROPBEAR_DSS */
60
61#endif /* _DSS_H_ */
62