2 * Author: Tatu Ylonen <ylo@cs.hut.fi>
3 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
6 * As far as I am concerned, the code I have written for this software
7 * can be used freely for any purpose. Any derived versions of this
8 * software must be clearly marked as such, and if the derived work is
9 * incompatible with the protocol description in the RFC file, it must be
10 * called by a name other than "ssh" or "Secure Shell".
12 * Copyright (c) 2000 Markus Friedl. All rights reserved.
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in the
21 * documentation and/or other materials provided with the distribution.
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 /* RCSID("$OpenBSD: cipher.h,v 1.30 2002/02/14 23:41:01 markus Exp $"); */
40 #include <openssl/des.h>
41 #include <openssl/blowfish.h>
42 #include <openssl/rc4.h>
43 #include <openssl/cast.h>
46 * Cipher types for SSH-1. New types can be added, but old types should not
47 * be removed for compatibility. The maximum allowed value is 31.
49 #define SSH_CIPHER_SSH2 -3
50 #define SSH_CIPHER_ILLEGAL -2 /* No valid cipher selected. */
51 #define SSH_CIPHER_NOT_SET -1 /* None selected (invalid number). */
52 #define SSH_CIPHER_NONE 0 /* no encryption */
53 #define SSH_CIPHER_IDEA 1 /* IDEA CFB */
54 #define SSH_CIPHER_DES 2 /* DES CBC */
55 #define SSH_CIPHER_3DES 3 /* 3DES CBC */
56 #define SSH_CIPHER_BROKEN_TSS 4 /* TRI's Simple Stream encryption CBC */
57 #define SSH_CIPHER_BROKEN_RC4 5 /* Alleged RC4 */
58 #define SSH_CIPHER_BLOWFISH 6
59 #define SSH_CIPHER_RESERVED 7
60 #define SSH_CIPHER_MAX 31
62 #define CIPHER_ENCRYPT 1
63 #define CIPHER_DECRYPT 0
65 typedef struct Cipher Cipher;
66 typedef struct CipherContext CipherContext;
69 struct CipherContext {
76 des_key_schedule key1;
77 des_key_schedule key2;
78 des_key_schedule key3;
103 u_int cipher_mask_ssh1(int);
104 Cipher *cipher_by_name(const char *);
105 Cipher *cipher_by_number(int);
106 int cipher_number(const char *);
107 char *cipher_name(int);
108 int ciphers_valid(const char *);
109 void cipher_init(CipherContext *, Cipher *, const u_char *, u_int,
110 const u_char *, u_int, int);
111 void cipher_crypt(CipherContext *, u_char *, const u_char *, u_int);
112 void cipher_cleanup(CipherContext *);
113 void cipher_set_key_string(CipherContext *, Cipher *, const char *, int);
114 u_int cipher_blocksize(Cipher *);
115 u_int cipher_keylen(Cipher *);
116 #endif /* CIPHER_H */