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 56 const char CAMELLIA_version[]="CAMELLIA" OPENSSL_VERSION_PTEXT; 57 58 int Camellia_set_key(const unsigned char *userKey, const int bits, 59 CAMELLIA_KEY *key) 60 { 61 if (!userKey || !key) 62 { 63 return -1; 64 } 65 66 switch(bits) 67 { 68 case 128: 69 camellia_setup128(userKey, (unsigned int *)key->rd_key); 70 key->enc = camellia_encrypt128; 71 key->dec = camellia_decrypt128; 72 break; 73 case 192: 74 camellia_setup192(userKey, (unsigned int *)key->rd_key); 75 key->enc = camellia_encrypt256; 76 key->dec = camellia_decrypt256; 77 break; 78 case 256: 79 camellia_setup256(userKey, (unsigned int *)key->rd_key); 80 key->enc = camellia_encrypt256; 81 key->dec = camellia_decrypt256; 82 break; 83 default: 84 return -2; 85 } 86 87 key->bitLength = bits; 88 return 0; 89 } 90 91 void Camellia_encrypt(const unsigned char *in, unsigned char *out, 92 const CAMELLIA_KEY *key) 93 { 94 u32 tmp[CAMELLIA_BLOCK_SIZE/sizeof(u32)]; 95 const union { long one; char little; } camellia_endian = {1}; 96 97 memcpy(tmp, in, CAMELLIA_BLOCK_SIZE); 98 if (camellia_endian.little) SWAP4WORD(tmp); 99 key->enc(key->rd_key, tmp); 100 if (camellia_endian.little) SWAP4WORD(tmp); 101 memcpy(out, tmp, CAMELLIA_BLOCK_SIZE); 102 } 103 104 void Camellia_decrypt(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->dec(key->rd_key, tmp); 113 if (camellia_endian.little) SWAP4WORD(tmp); 114 memcpy(out, tmp, CAMELLIA_BLOCK_SIZE); 115 } 116 117