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| 1 /* crypto/des/str2key.c */ | |
| 2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) | |
| 3 * All rights reserved. | |
| 4 * | |
| 5 * This package is an SSL implementation written | |
| 6 * by Eric Young (eay@cryptsoft.com). | |
| 7 * The implementation was written so as to conform with Netscapes SSL. | |
| 8 * | |
| 9 * This library is free for commercial and non-commercial use as long as | |
| 10 * the following conditions are aheared to. The following conditions | |
| 11 * apply to all code found in this distribution, be it the RC4, RSA, | |
| 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
| 13 * included with this distribution is covered by the same copyright terms | |
| 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
| 15 * | |
| 16 * Copyright remains Eric Young's, and as such any Copyright notices in | |
| 17 * the code are not to be removed. | |
| 18 * If this package is used in a product, Eric Young should be given attribution | |
| 19 * as the author of the parts of the library used. | |
| 20 * This can be in the form of a textual message at program startup or | |
| 21 * in documentation (online or textual) provided with the package. | |
| 22 * | |
| 23 * Redistribution and use in source and binary forms, with or without | |
| 24 * modification, are permitted provided that the following conditions | |
| 25 * are met: | |
| 26 * 1. Redistributions of source code must retain the copyright | |
| 27 * notice, this list of conditions and the following disclaimer. | |
| 28 * 2. Redistributions in binary form must reproduce the above copyright | |
| 29 * notice, this list of conditions and the following disclaimer in the | |
| 30 * documentation and/or other materials provided with the distribution. | |
| 31 * 3. All advertising materials mentioning features or use of this software | |
| 32 * must display the following acknowledgement: | |
| 33 * "This product includes cryptographic software written by | |
| 34 * Eric Young (eay@cryptsoft.com)" | |
| 35 * The word 'cryptographic' can be left out if the rouines from the library | |
| 36 * being used are not cryptographic related :-). | |
| 37 * 4. If you include any Windows specific code (or a derivative thereof) from | |
| 38 * the apps directory (application code) you must include an acknowledgement: | |
| 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
| 40 * | |
| 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | |
| 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
| 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 51 * SUCH DAMAGE. | |
| 52 * | |
| 53 * The licence and distribution terms for any publically available version or | |
| 54 * derivative of this code cannot be changed. i.e. this code cannot simply be | |
| 55 * copied and put under another distribution licence | |
| 56 * [including the GNU Public Licence.] | |
| 57 */ | |
| 58 | |
| 59 #include <openssl/crypto.h> | |
| 60 #include "des_locl.h" | |
| 61 | |
| 62 void DES_string_to_key(const char *str, DES_cblock *key) | |
| 63 { | |
| 64 DES_key_schedule ks; | |
| 65 int i,length; | |
| 66 register unsigned char j; | |
| 67 | |
| 68 memset(key,0,8); | |
| 69 length=strlen(str); | |
| 70 #ifdef OLD_STR_TO_KEY | |
| 71 for (i=0; i<length; i++) | |
| 72 (*key)[i%8]^=(str[i]<<1); | |
| 73 #else /* MIT COMPATIBLE */ | |
| 74 for (i=0; i<length; i++) | |
| 75 { | |
| 76 j=str[i]; | |
| 77 if ((i%16) < 8) | |
| 78 (*key)[i%8]^=(j<<1); | |
| 79 else | |
| 80 { | |
| 81 /* Reverse the bit order 05/05/92 eay */ | |
| 82 j=((j<<4)&0xf0)|((j>>4)&0x0f); | |
| 83 j=((j<<2)&0xcc)|((j>>2)&0x33); | |
| 84 j=((j<<1)&0xaa)|((j>>1)&0x55); | |
| 85 (*key)[7-(i%8)]^=j; | |
| 86 } | |
| 87 } | |
| 88 #endif | |
| 89 DES_set_odd_parity(key); | |
| 90 #ifdef EXPERIMENTAL_STR_TO_STRONG_KEY | |
| 91 if(DES_is_weak_key(key)) | |
| 92 (*key)[7] ^= 0xF0; | |
| 93 DES_set_key(key,&ks); | |
| 94 #else | |
| 95 DES_set_key_unchecked(key,&ks); | |
| 96 #endif | |
| 97 DES_cbc_cksum((const unsigned char*)str,key,length,&ks,key); | |
| 98 OPENSSL_cleanse(&ks,sizeof(ks)); | |
| 99 DES_set_odd_parity(key); | |
| 100 } | |
| 101 | |
| 102 void DES_string_to_2keys(const char *str, DES_cblock *key1, DES_cblock *key2) | |
| 103 { | |
| 104 DES_key_schedule ks; | |
| 105 int i,length; | |
| 106 register unsigned char j; | |
| 107 | |
| 108 memset(key1,0,8); | |
| 109 memset(key2,0,8); | |
| 110 length=strlen(str); | |
| 111 #ifdef OLD_STR_TO_KEY | |
| 112 if (length <= 8) | |
| 113 { | |
| 114 for (i=0; i<length; i++) | |
| 115 { | |
| 116 (*key2)[i]=(*key1)[i]=(str[i]<<1); | |
| 117 } | |
| 118 } | |
| 119 else | |
| 120 { | |
| 121 for (i=0; i<length; i++) | |
| 122 { | |
| 123 if ((i/8)&1) | |
| 124 (*key2)[i%8]^=(str[i]<<1); | |
| 125 else | |
| 126 (*key1)[i%8]^=(str[i]<<1); | |
| 127 } | |
| 128 } | |
| 129 #else /* MIT COMPATIBLE */ | |
| 130 for (i=0; i<length; i++) | |
| 131 { | |
| 132 j=str[i]; | |
| 133 if ((i%32) < 16) | |
| 134 { | |
| 135 if ((i%16) < 8) | |
| 136 (*key1)[i%8]^=(j<<1); | |
| 137 else | |
| 138 (*key2)[i%8]^=(j<<1); | |
| 139 } | |
| 140 else | |
| 141 { | |
| 142 j=((j<<4)&0xf0)|((j>>4)&0x0f); | |
| 143 j=((j<<2)&0xcc)|((j>>2)&0x33); | |
| 144 j=((j<<1)&0xaa)|((j>>1)&0x55); | |
| 145 if ((i%16) < 8) | |
| 146 (*key1)[7-(i%8)]^=j; | |
| 147 else | |
| 148 (*key2)[7-(i%8)]^=j; | |
| 149 } | |
| 150 } | |
| 151 if (length <= 8) memcpy(key2,key1,8); | |
| 152 #endif | |
| 153 DES_set_odd_parity(key1); | |
| 154 DES_set_odd_parity(key2); | |
| 155 #ifdef EXPERIMENTAL_STR_TO_STRONG_KEY | |
| 156 if(DES_is_weak_key(key1)) | |
| 157 (*key1)[7] ^= 0xF0; | |
| 158 DES_set_key(key1,&ks); | |
| 159 #else | |
| 160 DES_set_key_unchecked(key1,&ks); | |
| 161 #endif | |
| 162 DES_cbc_cksum((const unsigned char*)str,key1,length,&ks,key1); | |
| 163 #ifdef EXPERIMENTAL_STR_TO_STRONG_KEY | |
| 164 if(DES_is_weak_key(key2)) | |
| 165 (*key2)[7] ^= 0xF0; | |
| 166 DES_set_key(key2,&ks); | |
| 167 #else | |
| 168 DES_set_key_unchecked(key2,&ks); | |
| 169 #endif | |
| 170 DES_cbc_cksum((const unsigned char*)str,key2,length,&ks,key2); | |
| 171 OPENSSL_cleanse(&ks,sizeof(ks)); | |
| 172 DES_set_odd_parity(key1); | |
| 173 DES_set_odd_parity(key2); | |
| 174 } | |
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Chromium Code Reviews
Issue 2072073002:
Delete bundled copy of OpenSSL and replace with README. (Closed)
Base URL: https://chromium.googlesource.com/chromium/deps/openssl@master