Mercurial > dropbear

comparison algo.h @ 4:fe6bca95afa7

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Makefile.in contains updated files required
author Matt Johnston <matt@ucc.asn.au>
date Tue, 01 Jun 2004 02:46:09 +0000
parents
children 0969767bca0d
comparison
equal deleted inserted replaced
-1:000000000000 4:fe6bca95afa7
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 _ALGO_H_
26
27 #define _ALGO_H_
28
29 #include "includes.h"
30 #include "buffer.h"
31
32 struct Algo_Type {
33
34 unsigned char *name; /* identifying name */
35 char val; /* a value for this cipher, or -1 for invalid */
36 void *data; /* algorithm specific data */
37 unsigned usable : 1; /* whether we can use this algorithm */
38
39 };
40
41 typedef struct Algo_Type algo_type;
42
43 /* lists mapping ssh types of algorithms to internal values */
44 extern algo_type sshkex[];
45 extern algo_type sshhostkey[];
46 extern algo_type sshciphers[];
47 extern algo_type sshhashes[];
48 extern algo_type sshcompress[];
49
50 extern const struct dropbear_cipher dropbear_nocipher;
51 extern const struct dropbear_hash dropbear_nohash;
52
53 struct dropbear_cipher {
54 const struct _cipher_descriptor *cipherdesc;
55 unsigned long keysize;
56 unsigned char blocksize;
57 };
58
59 struct dropbear_hash {
60 const struct _hash_descriptor *hashdesc;
61 unsigned long keysize;
62 unsigned char hashsize;
63 };
64
65 void crypto_init();
66 int have_algo(char* algo, size_t algolen, algo_type algos[]);
67 void buf_put_algolist(buffer * buf, algo_type localalgos[]);
68
69 algo_type * common_buf_match_algo(buffer* buf, algo_type localalgos[],
70 int *goodguess);
71 algo_type * svr_buf_match_algo(buffer* buf, algo_type localalgos[],
72 int *goodguess);
73 algo_type * cli_buf_match_algo(buffer* buf, algo_type localalgos[]);
74
75 #endif /* _ALGO_H_ */