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58964a49 | 1 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
2 | * All rights reserved. |
3 | * | |
4 | * This package is an SSL implementation written | |
5 | * by Eric Young (eay@cryptsoft.com). | |
6 | * The implementation was written so as to conform with Netscapes SSL. | |
0f113f3e | 7 | * |
d02b48c6 RE |
8 | * This library is free for commercial and non-commercial use as long as |
9 | * the following conditions are aheared to. The following conditions | |
10 | * apply to all code found in this distribution, be it the RC4, RSA, | |
11 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
12 | * included with this distribution is covered by the same copyright terms | |
13 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
0f113f3e | 14 | * |
d02b48c6 RE |
15 | * Copyright remains Eric Young's, and as such any Copyright notices in |
16 | * the code are not to be removed. | |
17 | * If this package is used in a product, Eric Young should be given attribution | |
18 | * as the author of the parts of the library used. | |
19 | * This can be in the form of a textual message at program startup or | |
20 | * in documentation (online or textual) provided with the package. | |
0f113f3e | 21 | * |
d02b48c6 RE |
22 | * Redistribution and use in source and binary forms, with or without |
23 | * modification, are permitted provided that the following conditions | |
24 | * are met: | |
25 | * 1. Redistributions of source code must retain the copyright | |
26 | * notice, this list of conditions and the following disclaimer. | |
27 | * 2. Redistributions in binary form must reproduce the above copyright | |
28 | * notice, this list of conditions and the following disclaimer in the | |
29 | * documentation and/or other materials provided with the distribution. | |
30 | * 3. All advertising materials mentioning features or use of this software | |
31 | * must display the following acknowledgement: | |
32 | * "This product includes cryptographic software written by | |
33 | * Eric Young (eay@cryptsoft.com)" | |
34 | * The word 'cryptographic' can be left out if the rouines from the library | |
35 | * being used are not cryptographic related :-). | |
0f113f3e | 36 | * 4. If you include any Windows specific code (or a derivative thereof) from |
d02b48c6 RE |
37 | * the apps directory (application code) you must include an acknowledgement: |
38 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
0f113f3e | 39 | * |
d02b48c6 RE |
40 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
41 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
42 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
43 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
44 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
45 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
46 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
47 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
48 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
49 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
50 | * SUCH DAMAGE. | |
0f113f3e | 51 | * |
d02b48c6 RE |
52 | * The licence and distribution terms for any publically available version or |
53 | * derivative of this code cannot be changed. i.e. this code cannot simply be | |
54 | * copied and put under another distribution licence | |
55 | * [including the GNU Public Licence.] | |
56 | */ | |
57 | ||
d02b48c6 | 58 | #include <stdio.h> |
b39fc560 | 59 | #include "internal/cryptlib.h" |
786b0075 RL |
60 | |
61 | #ifndef OPENSSL_NO_IDEA | |
0f113f3e MC |
62 | # include <openssl/evp.h> |
63 | # include <openssl/objects.h> | |
6435f0f6 | 64 | # include "internal/evp_int.h" |
0f113f3e | 65 | # include <openssl/idea.h> |
d02b48c6 | 66 | |
6435f0f6 RL |
67 | /* Can't use IMPLEMENT_BLOCK_CIPHER because idea_ecb_encrypt is different */ |
68 | ||
69 | typedef struct { | |
70 | IDEA_KEY_SCHEDULE ks; | |
71 | } EVP_IDEA_KEY; | |
72 | ||
1921eaad | 73 | static int idea_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, |
0f113f3e | 74 | const unsigned char *iv, int enc); |
d02b48c6 | 75 | |
0f113f3e MC |
76 | /* |
77 | * NB idea_ecb_encrypt doesn't take an 'encrypt' argument so we treat it as a | |
78 | * special case | |
57ae2e24 DSH |
79 | */ |
80 | ||
1921eaad | 81 | static int idea_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 82 | const unsigned char *in, size_t inl) |
57ae2e24 | 83 | { |
0f113f3e | 84 | BLOCK_CIPHER_ecb_loop() |
6435f0f6 | 85 | idea_ecb_encrypt(in + i, out + i, &EVP_C_DATA(EVP_IDEA_KEY,ctx)->ks); |
0f113f3e | 86 | return 1; |
57ae2e24 DSH |
87 | } |
88 | ||
dbad1690 | 89 | BLOCK_CIPHER_func_cbc(idea, idea, EVP_IDEA_KEY, ks) |
0f113f3e MC |
90 | BLOCK_CIPHER_func_ofb(idea, idea, 64, EVP_IDEA_KEY, ks) |
91 | BLOCK_CIPHER_func_cfb(idea, idea, 64, EVP_IDEA_KEY, ks) | |
57ae2e24 | 92 | |
0f113f3e MC |
93 | BLOCK_CIPHER_defs(idea, IDEA_KEY_SCHEDULE, NID_idea, 8, 16, 8, 64, |
94 | 0, idea_init_key, NULL, | |
95 | EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, NULL) | |
57ae2e24 | 96 | |
1921eaad | 97 | static int idea_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, |
0f113f3e MC |
98 | const unsigned char *iv, int enc) |
99 | { | |
100 | if (!enc) { | |
101 | if (EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_OFB_MODE) | |
102 | enc = 1; | |
103 | else if (EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_CFB_MODE) | |
104 | enc = 1; | |
105 | } | |
106 | if (enc) | |
6435f0f6 | 107 | idea_set_encrypt_key(key, &EVP_C_DATA(EVP_IDEA_KEY,ctx)->ks); |
0f113f3e MC |
108 | else { |
109 | IDEA_KEY_SCHEDULE tmp; | |
d02b48c6 | 110 | |
0f113f3e | 111 | idea_set_encrypt_key(key, &tmp); |
6435f0f6 | 112 | idea_set_decrypt_key(&tmp, &EVP_C_DATA(EVP_IDEA_KEY,ctx)->ks); |
0f113f3e MC |
113 | OPENSSL_cleanse((unsigned char *)&tmp, sizeof(IDEA_KEY_SCHEDULE)); |
114 | } | |
115 | return 1; | |
116 | } | |
d02b48c6 | 117 | |
d02b48c6 | 118 | #endif |