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| 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "net/http/des.h" | |
| 6 | |
| 7 #include "base/logging.h" | |
| 8 | |
| 9 #if defined(USE_OPENSSL) | |
| 10 #include <openssl/des.h> | |
| 11 #include "crypto/openssl_util.h" | |
| 12 #elif defined(USE_NSS) | |
| 13 #include <nss.h> | |
| 14 #include <pk11pub.h> | |
| 15 #include "crypto/nss_util.h" | |
| 16 #elif defined(OS_MACOSX) | |
| 17 #include <CommonCrypto/CommonCryptor.h> | |
| 18 #elif defined(OS_WIN) | |
| 19 #include <windows.h> | |
| 20 #include <wincrypt.h> | |
| 21 #include "crypto/scoped_capi_types.h" | |
| 22 #endif | |
| 23 | |
| 24 // The Mac and Windows (CryptoAPI) versions of DESEncrypt are our own code. | |
| 25 // DESSetKeyParity, DESMakeKey, and the Linux (NSS) version of DESEncrypt are | |
| 26 // based on mozilla/security/manager/ssl/src/nsNTLMAuthModule.cpp, | |
| 27 // CVS rev. 1.14. | |
| 28 | |
| 29 /* ***** BEGIN LICENSE BLOCK ***** | |
| 30 * Version: MPL 1.1/GPL 2.0/LGPL 2.1 | |
| 31 * | |
| 32 * The contents of this file are subject to the Mozilla Public License Version | |
| 33 * 1.1 (the "License"); you may not use this file except in compliance with | |
| 34 * the License. You may obtain a copy of the License at | |
| 35 * http://www.mozilla.org/MPL/ | |
| 36 * | |
| 37 * Software distributed under the License is distributed on an "AS IS" basis, | |
| 38 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License | |
| 39 * for the specific language governing rights and limitations under the | |
| 40 * License. | |
| 41 * | |
| 42 * The Original Code is Mozilla. | |
| 43 * | |
| 44 * The Initial Developer of the Original Code is IBM Corporation. | |
| 45 * Portions created by IBM Corporation are Copyright (C) 2003 | |
| 46 * IBM Corporation. All Rights Reserved. | |
| 47 * | |
| 48 * Contributor(s): | |
| 49 * Darin Fisher <darin@meer.net> | |
| 50 * | |
| 51 * Alternatively, the contents of this file may be used under the terms of | |
| 52 * either the GNU General Public License Version 2 or later (the "GPL"), or | |
| 53 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), | |
| 54 * in which case the provisions of the GPL or the LGPL are applicable instead | |
| 55 * of those above. If you wish to allow use of your version of this file only | |
| 56 * under the terms of either the GPL or the LGPL, and not to allow others to | |
| 57 * use your version of this file under the terms of the MPL, indicate your | |
| 58 * decision by deleting the provisions above and replace them with the notice | |
| 59 * and other provisions required by the GPL or the LGPL. If you do not delete | |
| 60 * the provisions above, a recipient may use your version of this file under | |
| 61 * the terms of any one of the MPL, the GPL or the LGPL. | |
| 62 * | |
| 63 * ***** END LICENSE BLOCK ***** */ | |
| 64 | |
| 65 // Set odd parity bit (in least significant bit position). | |
| 66 static uint8 DESSetKeyParity(uint8 x) { | |
| 67 if ((((x >> 7) ^ (x >> 6) ^ (x >> 5) ^ | |
| 68 (x >> 4) ^ (x >> 3) ^ (x >> 2) ^ | |
| 69 (x >> 1)) & 0x01) == 0) { | |
| 70 x |= 0x01; | |
| 71 } else { | |
| 72 x &= 0xfe; | |
| 73 } | |
| 74 return x; | |
| 75 } | |
| 76 | |
| 77 namespace net { | |
| 78 | |
| 79 void DESMakeKey(const uint8* raw, uint8* key) { | |
| 80 key[0] = DESSetKeyParity(raw[0]); | |
| 81 key[1] = DESSetKeyParity((raw[0] << 7) | (raw[1] >> 1)); | |
| 82 key[2] = DESSetKeyParity((raw[1] << 6) | (raw[2] >> 2)); | |
| 83 key[3] = DESSetKeyParity((raw[2] << 5) | (raw[3] >> 3)); | |
| 84 key[4] = DESSetKeyParity((raw[3] << 4) | (raw[4] >> 4)); | |
| 85 key[5] = DESSetKeyParity((raw[4] << 3) | (raw[5] >> 5)); | |
| 86 key[6] = DESSetKeyParity((raw[5] << 2) | (raw[6] >> 6)); | |
| 87 key[7] = DESSetKeyParity((raw[6] << 1)); | |
| 88 } | |
| 89 | |
| 90 #if defined(USE_OPENSSL) | |
| 91 | |
| 92 void DESEncrypt(const uint8* key, const uint8* src, uint8* hash) { | |
| 93 crypto::EnsureOpenSSLInit(); | |
| 94 | |
| 95 DES_key_schedule ks; | |
| 96 DES_set_key( | |
| 97 reinterpret_cast<const DES_cblock*>(key), &ks); | |
| 98 | |
| 99 DES_ecb_encrypt(reinterpret_cast<const DES_cblock*>(src), | |
| 100 reinterpret_cast<DES_cblock*>(hash), &ks, DES_ENCRYPT); | |
| 101 } | |
| 102 | |
| 103 #elif defined(USE_NSS) | |
| 104 | |
| 105 void DESEncrypt(const uint8* key, const uint8* src, uint8* hash) { | |
| 106 CK_MECHANISM_TYPE cipher_mech = CKM_DES_ECB; | |
| 107 PK11SlotInfo* slot = NULL; | |
| 108 PK11SymKey* symkey = NULL; | |
| 109 PK11Context* ctxt = NULL; | |
| 110 SECItem key_item; | |
| 111 SECItem* param = NULL; | |
| 112 SECStatus rv; | |
| 113 unsigned int n; | |
| 114 | |
| 115 crypto::EnsureNSSInit(); | |
| 116 | |
| 117 slot = PK11_GetInternalSlot(); | |
| 118 if (!slot) | |
| 119 goto done; | |
| 120 | |
| 121 key_item.data = const_cast<uint8*>(key); | |
| 122 key_item.len = 8; | |
| 123 symkey = PK11_ImportSymKey(slot, cipher_mech, | |
| 124 PK11_OriginUnwrap, CKA_ENCRYPT, | |
| 125 &key_item, NULL); | |
| 126 if (!symkey) | |
| 127 goto done; | |
| 128 | |
| 129 // No initialization vector required. | |
| 130 param = PK11_ParamFromIV(cipher_mech, NULL); | |
| 131 if (!param) | |
| 132 goto done; | |
| 133 | |
| 134 ctxt = PK11_CreateContextBySymKey(cipher_mech, CKA_ENCRYPT, | |
| 135 symkey, param); | |
| 136 if (!ctxt) | |
| 137 goto done; | |
| 138 | |
| 139 rv = PK11_CipherOp(ctxt, hash, reinterpret_cast<int*>(&n), 8, | |
| 140 const_cast<uint8*>(src), 8); | |
| 141 if (rv != SECSuccess) | |
| 142 goto done; | |
| 143 | |
| 144 // TODO(wtc): Should this be PK11_Finalize? | |
| 145 rv = PK11_DigestFinal(ctxt, hash+8, &n, 0); | |
| 146 if (rv != SECSuccess) | |
| 147 goto done; | |
| 148 | |
| 149 done: | |
| 150 if (ctxt) | |
| 151 PK11_DestroyContext(ctxt, PR_TRUE); | |
| 152 if (symkey) | |
| 153 PK11_FreeSymKey(symkey); | |
| 154 if (param) | |
| 155 SECITEM_FreeItem(param, PR_TRUE); | |
| 156 if (slot) | |
| 157 PK11_FreeSlot(slot); | |
| 158 } | |
| 159 | |
| 160 #elif defined(OS_MACOSX) | |
| 161 | |
| 162 void DESEncrypt(const uint8* key, const uint8* src, uint8* hash) { | |
| 163 CCCryptorStatus status; | |
| 164 size_t data_out_moved = 0; | |
| 165 status = CCCrypt(kCCEncrypt, kCCAlgorithmDES, kCCOptionECBMode, | |
| 166 key, 8, NULL, src, 8, hash, 8, &data_out_moved); | |
| 167 DCHECK(status == kCCSuccess); | |
| 168 DCHECK(data_out_moved == 8); | |
| 169 } | |
| 170 | |
| 171 #elif defined(OS_WIN) | |
| 172 | |
| 173 void DESEncrypt(const uint8* key, const uint8* src, uint8* hash) { | |
| 174 crypto::ScopedHCRYPTPROV provider; | |
| 175 if (!CryptAcquireContext(provider.receive(), NULL, NULL, PROV_RSA_FULL, | |
| 176 CRYPT_VERIFYCONTEXT)) | |
| 177 return; | |
| 178 | |
| 179 { | |
| 180 // Import the DES key. | |
| 181 struct KeyBlob { | |
| 182 BLOBHEADER header; | |
| 183 DWORD key_size; | |
| 184 BYTE key_data[8]; | |
| 185 }; | |
| 186 KeyBlob key_blob; | |
| 187 key_blob.header.bType = PLAINTEXTKEYBLOB; | |
| 188 key_blob.header.bVersion = CUR_BLOB_VERSION; | |
| 189 key_blob.header.reserved = 0; | |
| 190 key_blob.header.aiKeyAlg = CALG_DES; | |
| 191 key_blob.key_size = 8; // 64 bits | |
| 192 memcpy(key_blob.key_data, key, 8); | |
| 193 | |
| 194 crypto::ScopedHCRYPTKEY key; | |
| 195 BOOL import_ok = CryptImportKey(provider, | |
| 196 reinterpret_cast<BYTE*>(&key_blob), | |
| 197 sizeof key_blob, 0, 0, key.receive()); | |
| 198 // Destroy the copy of the key. | |
| 199 SecureZeroMemory(key_blob.key_data, sizeof key_blob.key_data); | |
| 200 if (!import_ok) | |
| 201 return; | |
| 202 | |
| 203 // No initialization vector required. | |
| 204 DWORD cipher_mode = CRYPT_MODE_ECB; | |
| 205 if (!CryptSetKeyParam(key, KP_MODE, reinterpret_cast<BYTE*>(&cipher_mode), | |
| 206 0)) | |
| 207 return; | |
| 208 | |
| 209 // CryptoAPI requires us to copy the plaintext to the output buffer first. | |
| 210 CopyMemory(hash, src, 8); | |
| 211 // Pass a 'Final' of FALSE, otherwise CryptEncrypt appends one additional | |
| 212 // block of padding to the data. | |
| 213 DWORD hash_len = 8; | |
| 214 CryptEncrypt(key, 0, FALSE, 0, hash, &hash_len, 8); | |
| 215 } | |
| 216 } | |
| 217 | |
| 218 #endif | |
| 219 | |
| 220 } // namespace net | |
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