cmll_misc.c revision 296465 
1/* crypto/camellia/camellia_misc.c -*- mode:C; c-file-style: "eay" -*- */
2/* ====================================================================
3 * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 *
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
15 *    distribution.
16 *
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/)"
21 *
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.
26 *
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.
30 *
31 * 6. Redistributions of any form whatsoever must retain the following
32 *    acknowledgment:
33 *    "This product includes software developed by the OpenSSL Project
34 *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
35 *
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 * ====================================================================
49 *
50 */
51
52#include <openssl/opensslv.h>
53#include <openssl/camellia.h>
54#include "cmll_locl.h"
55#include <openssl/crypto.h>
56#ifdef OPENSSL_FIPS
57# include <openssl/fips.h>
58#endif
59
60const char CAMELLIA_version[] = "CAMELLIA" OPENSSL_VERSION_PTEXT;
61
62int Camellia_set_key(const unsigned char *userKey, const int bits,
63                     CAMELLIA_KEY *key)
64#ifdef OPENSSL_FIPS
65{
66    if (FIPS_mode())
67        FIPS_BAD_ABORT(CAMELLIA)
68            return private_Camellia_set_key(userKey, bits, key);
69}
70
71int private_Camellia_set_key(const unsigned char *userKey, const int bits,
72                             CAMELLIA_KEY *key)
73#endif
74{
75    if (!userKey || !key) {
76        return -1;
77    }
78
79    switch (bits) {
80    case 128:
81        camellia_setup128(userKey, (unsigned int *)key->rd_key);
82        key->enc = camellia_encrypt128;
83        key->dec = camellia_decrypt128;
84        break;
85    case 192:
86        camellia_setup192(userKey, (unsigned int *)key->rd_key);
87        key->enc = camellia_encrypt256;
88        key->dec = camellia_decrypt256;
89        break;
90    case 256:
91        camellia_setup256(userKey, (unsigned int *)key->rd_key);
92        key->enc = camellia_encrypt256;
93        key->dec = camellia_decrypt256;
94        break;
95    default:
96        return -2;
97    }
98
99    key->bitLength = bits;
100    return 0;
101}
102
103void Camellia_encrypt(const unsigned char *in, unsigned char *out,
104                      const CAMELLIA_KEY *key)
105{
106    u32 tmp[CAMELLIA_BLOCK_SIZE / sizeof(u32)];
107    const union {
108        long one;
109        char little;
110    } camellia_endian = {
111        1
112    };
113
114    memcpy(tmp, in, CAMELLIA_BLOCK_SIZE);
115    if (camellia_endian.little)
116        SWAP4WORD(tmp);
117    key->enc(key->rd_key, tmp);
118    if (camellia_endian.little)
119        SWAP4WORD(tmp);
120    memcpy(out, tmp, CAMELLIA_BLOCK_SIZE);
121}
122
123void Camellia_decrypt(const unsigned char *in, unsigned char *out,
124                      const CAMELLIA_KEY *key)
125{
126    u32 tmp[CAMELLIA_BLOCK_SIZE / sizeof(u32)];
127    const union {
128        long one;
129        char little;
130    } camellia_endian = {
131        1
132    };
133
134    memcpy(tmp, in, CAMELLIA_BLOCK_SIZE);
135    if (camellia_endian.little)
136        SWAP4WORD(tmp);
137    key->dec(key->rd_key, tmp);
138    if (camellia_endian.little)
139        SWAP4WORD(tmp);
140    memcpy(out, tmp, CAMELLIA_BLOCK_SIZE);
141}
142