1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
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).
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.
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
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 :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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
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.]
59 #include "internal/cryptlib.h"
61 #ifndef OPENSSL_NO_IDEA
62 # include <openssl/evp.h>
63 # include <openssl/objects.h>
64 # include "internal/evp_int.h"
65 # include <openssl/idea.h>
67 /* Can't use IMPLEMENT_BLOCK_CIPHER because idea_ecb_encrypt is different */
73 static int idea_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
74 const unsigned char *iv, int enc);
77 * NB idea_ecb_encrypt doesn't take an 'encrypt' argument so we treat it as a
81 static int idea_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
82 const unsigned char *in, size_t inl)
84 BLOCK_CIPHER_ecb_loop()
85 idea_ecb_encrypt(in + i, out + i, &EVP_C_DATA(EVP_IDEA_KEY,ctx)->ks);
89 BLOCK_CIPHER_func_cbc(idea, idea, EVP_IDEA_KEY, ks)
90 BLOCK_CIPHER_func_ofb(idea, idea, 64, EVP_IDEA_KEY, ks)
91 BLOCK_CIPHER_func_cfb(idea, idea, 64, EVP_IDEA_KEY, ks)
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)
97 static int idea_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
98 const unsigned char *iv, int enc)
101 if (EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_OFB_MODE)
103 else if (EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_CFB_MODE)
107 idea_set_encrypt_key(key, &EVP_C_DATA(EVP_IDEA_KEY,ctx)->ks);
109 IDEA_KEY_SCHEDULE tmp;
111 idea_set_encrypt_key(key, &tmp);
112 idea_set_decrypt_key(&tmp, &EVP_C_DATA(EVP_IDEA_KEY,ctx)->ks);
113 OPENSSL_cleanse((unsigned char *)&tmp, sizeof(IDEA_KEY_SCHEDULE));