Branch data Line data Source code
1 : : /* crypto/evp/e_idea.c */
2 : : /* Copyright (C) 1995-1998 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 : : #include <stdio.h>
60 : : #include "cryptlib.h"
61 : :
62 : : #ifndef OPENSSL_NO_IDEA
63 : : #include <openssl/evp.h>
64 : : #include <openssl/objects.h>
65 : : #include "evp_locl.h"
66 : : #include <openssl/idea.h>
67 : :
68 : : static int idea_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
69 : : const unsigned char *iv,int enc);
70 : :
71 : : /* NB idea_ecb_encrypt doesn't take an 'encrypt' argument so we treat it as a special
72 : : * case
73 : : */
74 : :
75 : 60 : static int idea_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
76 : : const unsigned char *in, size_t inl)
77 : : {
78 [ + - ][ + + ]: 572 : BLOCK_CIPHER_ecb_loop()
79 : 512 : idea_ecb_encrypt(in + i, out + i, ctx->cipher_data);
80 : : return 1;
81 : : }
82 : :
83 : : /* Can't use IMPLEMENT_BLOCK_CIPHER because idea_ecb_encrypt is different */
84 : :
85 : : typedef struct
86 : : {
87 : : IDEA_KEY_SCHEDULE ks;
88 : : } EVP_IDEA_KEY;
89 : :
90 [ - + ][ + - ]: 3100 : BLOCK_CIPHER_func_cbc(idea, idea, EVP_IDEA_KEY, ks)
91 [ - + ][ + - ]: 64 : BLOCK_CIPHER_func_ofb(idea, idea, 64, EVP_IDEA_KEY, ks)
92 [ + - ][ + - ]: 96 : BLOCK_CIPHER_func_cfb(idea, idea, 64, EVP_IDEA_KEY, ks)
[ + + ]
93 : :
94 : 3873 : BLOCK_CIPHER_defs(idea, IDEA_KEY_SCHEDULE, NID_idea, 8, 16, 8, 64,
95 : : 0, idea_init_key, NULL,
96 : : EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, NULL)
97 : :
98 : 504 : static int idea_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
99 : : const unsigned char *iv, int enc)
100 : : {
101 [ + + ]: 504 : if(!enc) {
102 [ + + ]: 252 : if (EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_OFB_MODE) enc = 1;
103 [ + + ]: 250 : else if (EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_CFB_MODE) enc = 1;
104 : : }
105 [ + + ]: 504 : if (enc) idea_set_encrypt_key(key,ctx->cipher_data);
106 : : else
107 : : {
108 : : IDEA_KEY_SCHEDULE tmp;
109 : :
110 : 248 : idea_set_encrypt_key(key,&tmp);
111 : 248 : idea_set_decrypt_key(&tmp,ctx->cipher_data);
112 : 248 : OPENSSL_cleanse((unsigned char *)&tmp,
113 : : sizeof(IDEA_KEY_SCHEDULE));
114 : : }
115 : 504 : return 1;
116 : : }
117 : :
118 : : #endif
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