1 /* $OpenBSD: idea.h,v 1.10 2014/06/12 15:49:29 deraadt Exp $ */
2 /* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
3  * All rights reserved.
4  *
5  * This package is an SSL implementation written
6  * by Eric Young (eay@cryptsoft.com).
7  * The implementation was written so as to conform with Netscapes SSL.
8  *
9  * This library is free for commercial and non-commercial use as long as
10  * the following conditions are aheared to.  The following conditions
11  * apply to all code found in this distribution, be it the RC4, RSA,
12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
13  * included with this distribution is covered by the same copyright terms
14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15  *
16  * Copyright remains Eric Young's, and as such any Copyright notices in
17  * the code are not to be removed.
18  * If this package is used in a product, Eric Young should be given attribution
19  * as the author of the parts of the library used.
20  * This can be in the form of a textual message at program startup or
21  * in documentation (online or textual) provided with the package.
22  *
23  * Redistribution and use in source and binary forms, with or without
24  * modification, are permitted provided that the following conditions
25  * are met:
26  * 1. Redistributions of source code must retain the copyright
27  *    notice, this list of conditions and the following disclaimer.
28  * 2. Redistributions in binary form must reproduce the above copyright
29  *    notice, this list of conditions and the following disclaimer in the
30  *    documentation and/or other materials provided with the distribution.
31  * 3. All advertising materials mentioning features or use of this software
32  *    must display the following acknowledgement:
33  *    "This product includes cryptographic software written by
34  *     Eric Young (eay@cryptsoft.com)"
35  *    The word 'cryptographic' can be left out if the rouines from the library
36  *    being used are not cryptographic related :-).
37  * 4. If you include any Windows specific code (or a derivative thereof) from
38  *    the apps directory (application code) you must include an acknowledgement:
39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40  *
41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51  * SUCH DAMAGE.
52  *
53  * The licence and distribution terms for any publically available version or
54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
55  * copied and put under another distribution licence
56  * [including the GNU Public Licence.]
57  */
58 
59 #ifndef HEADER_IDEA_H
60 #define HEADER_IDEA_H
61 
62 #include <openssl/opensslconf.h> /* IDEA_INT, OPENSSL_NO_IDEA */
63 
64 #ifdef OPENSSL_NO_IDEA
65 #error IDEA is disabled.
66 #endif
67 
68 #define IDEA_ENCRYPT	1
69 #define IDEA_DECRYPT	0
70 
71 #define IDEA_BLOCK	8
72 #define IDEA_KEY_LENGTH	16
73 
74 #ifdef  __cplusplus
75 extern "C" {
76 #endif
77 
78 typedef struct idea_key_st
79 	{
80 	IDEA_INT data[9][6];
81 	} IDEA_KEY_SCHEDULE;
82 
83 const char *idea_options(void);
84 void idea_ecb_encrypt(const unsigned char *in, unsigned char *out,
85 	IDEA_KEY_SCHEDULE *ks);
86 void idea_set_encrypt_key(const unsigned char *key, IDEA_KEY_SCHEDULE *ks);
87 void idea_set_decrypt_key(IDEA_KEY_SCHEDULE *ek, IDEA_KEY_SCHEDULE *dk);
88 void idea_cbc_encrypt(const unsigned char *in, unsigned char *out,
89 	long length, IDEA_KEY_SCHEDULE *ks, unsigned char *iv,int enc);
90 void idea_cfb64_encrypt(const unsigned char *in, unsigned char *out,
91 	long length, IDEA_KEY_SCHEDULE *ks, unsigned char *iv,
92 	int *num,int enc);
93 void idea_ofb64_encrypt(const unsigned char *in, unsigned char *out,
94 	long length, IDEA_KEY_SCHEDULE *ks, unsigned char *iv, int *num);
95 void idea_encrypt(unsigned long *in, IDEA_KEY_SCHEDULE *ks);
96 #ifdef  __cplusplus
97 }
98 #endif
99 
100 #endif
101