1 /* crypto/camellia/camellia_cbc.c -*- mode:C; c-file-style: "eay" -*- */
2 /* ====================================================================
3 * Copyright (c) 2006 The OpenSSL Project. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the
17 * 3. All advertising materials mentioning features or use of this
18 * software must display the following acknowledgment:
19 * "This product includes software developed by the OpenSSL Project
20 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
22 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23 * endorse or promote products derived from this software without
24 * prior written permission. For written permission, please contact
25 * openssl-core@openssl.org.
27 * 5. Products derived from this software may not be called "OpenSSL"
28 * nor may "OpenSSL" appear in their names without prior written
29 * permission of the OpenSSL Project.
31 * 6. Redistributions of any form whatsoever must retain the following
33 * "This product includes software developed by the OpenSSL Project
34 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
36 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47 * OF THE POSSIBILITY OF SUCH DAMAGE.
48 * ====================================================================
52 #ifndef CAMELLIA_DEBUG
60 #include <openssl/camellia.h>
61 #include "cmll_locl.h"
62 void Camellia_cbc_encrypt(const unsigned char *in, unsigned char *out,
63 const unsigned long length, const CAMELLIA_KEY *key,
64 unsigned char *ivec, const int enc)
68 unsigned long len = length;
69 unsigned char tmp[CAMELLIA_BLOCK_SIZE];
70 const unsigned char *iv = ivec;
72 assert(in && out && key && ivec);
73 assert((CAMELLIA_ENCRYPT == enc)||(CAMELLIA_DECRYPT == enc));
75 if (CAMELLIA_ENCRYPT == enc)
77 while (len >= CAMELLIA_BLOCK_SIZE)
79 for(n=0; n < CAMELLIA_BLOCK_SIZE; ++n)
80 out[n] = in[n] ^ iv[n];
81 Camellia_encrypt(out, out, key);
83 len -= CAMELLIA_BLOCK_SIZE;
84 in += CAMELLIA_BLOCK_SIZE;
85 out += CAMELLIA_BLOCK_SIZE;
89 for(n=0; n < len; ++n)
90 out[n] = in[n] ^ iv[n];
91 for(n=len; n < CAMELLIA_BLOCK_SIZE; ++n)
93 Camellia_encrypt(out, out, key);
96 memcpy(ivec,iv,CAMELLIA_BLOCK_SIZE);
100 while (len >= CAMELLIA_BLOCK_SIZE)
102 Camellia_decrypt(in, out, key);
103 for(n=0; n < CAMELLIA_BLOCK_SIZE; ++n)
106 len -= CAMELLIA_BLOCK_SIZE;
107 in += CAMELLIA_BLOCK_SIZE;
108 out += CAMELLIA_BLOCK_SIZE;
112 Camellia_decrypt(in,tmp,key);
113 for(n=0; n < len; ++n)
114 out[n] = tmp[n] ^ iv[n];
117 memcpy(ivec,iv,CAMELLIA_BLOCK_SIZE);
121 while (len >= CAMELLIA_BLOCK_SIZE)
123 memcpy(tmp, in, CAMELLIA_BLOCK_SIZE);
124 Camellia_decrypt(in, out, key);
125 for(n=0; n < CAMELLIA_BLOCK_SIZE; ++n)
127 memcpy(ivec, tmp, CAMELLIA_BLOCK_SIZE);
128 len -= CAMELLIA_BLOCK_SIZE;
129 in += CAMELLIA_BLOCK_SIZE;
130 out += CAMELLIA_BLOCK_SIZE;
134 memcpy(tmp, in, CAMELLIA_BLOCK_SIZE);
135 Camellia_decrypt(tmp, out, key);
136 for(n=0; n < len; ++n)
138 for(n=len; n < CAMELLIA_BLOCK_SIZE; ++n)
140 memcpy(ivec, tmp, CAMELLIA_BLOCK_SIZE);