Home | History | Annotate | Download | only in camellia 
      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 (at) 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 
     60 const char CAMELLIA_version[]="CAMELLIA" OPENSSL_VERSION_PTEXT;
     61 
     62 int 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 int private_Camellia_set_key(const unsigned char *userKey, const int bits,
     71 	CAMELLIA_KEY *key)
     72 #endif
     73 	{
     74 	if (!userKey || !key)
     75 		{
     76 		return -1;
     77 		}
     78 
     79 	switch(bits)
     80 		{
     81 	case 128:
     82 		camellia_setup128(userKey, (unsigned int *)key->rd_key);
     83 		key->enc = camellia_encrypt128;
     84 		key->dec = camellia_decrypt128;
     85 		break;
     86 	case 192:
     87 		camellia_setup192(userKey, (unsigned int *)key->rd_key);
     88 		key->enc = camellia_encrypt256;
     89 		key->dec = camellia_decrypt256;
     90 		break;
     91 	case 256:
     92 		camellia_setup256(userKey, (unsigned int *)key->rd_key);
     93 		key->enc = camellia_encrypt256;
     94 		key->dec = camellia_decrypt256;
     95 		break;
     96 	default:
     97 		return -2;
     98 		}
     99 
    100 	key->bitLength = bits;
    101 	return 0;
    102 	}
    103 
    104 void Camellia_encrypt(const unsigned char *in, unsigned char *out,
    105 	const CAMELLIA_KEY *key)
    106 	{
    107 	u32 tmp[CAMELLIA_BLOCK_SIZE/sizeof(u32)];
    108 	const union { long one; char little; } camellia_endian = {1};
    109 
    110 	memcpy(tmp, in, CAMELLIA_BLOCK_SIZE);
    111 	if (camellia_endian.little) SWAP4WORD(tmp);
    112 	key->enc(key->rd_key, tmp);
    113 	if (camellia_endian.little) SWAP4WORD(tmp);
    114 	memcpy(out, tmp, CAMELLIA_BLOCK_SIZE);
    115 	}
    116 
    117 void Camellia_decrypt(const unsigned char *in, unsigned char *out,
    118 	const CAMELLIA_KEY *key)
    119 	{
    120 	u32 tmp[CAMELLIA_BLOCK_SIZE/sizeof(u32)];
    121 	const union { long one; char little; } camellia_endian = {1};
    122 
    123 	memcpy(tmp, in, CAMELLIA_BLOCK_SIZE);
    124 	if (camellia_endian.little) SWAP4WORD(tmp);
    125 	key->dec(key->rd_key, tmp);
    126 	if (camellia_endian.little) SWAP4WORD(tmp);
    127 	memcpy(out, tmp, CAMELLIA_BLOCK_SIZE);
    128 	}
    129 
    130