OLD | NEW |
| (Empty) |
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 | |
OLD | NEW |