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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 #include "crypto/openssl_util.h" | |
9 #include "third_party/boringssl/src/include/openssl/des.h" | |
10 | |
11 // The iOS version of DESEncrypt is our own code. | |
12 // DESSetKeyParity and DESMakeKey are based on | |
13 // mozilla/security/manager/ssl/src/nsNTLMAuthModule.cpp, CVS rev. 1.14. | |
14 | |
15 /* ***** BEGIN LICENSE BLOCK ***** | |
16 * Version: MPL 1.1/GPL 2.0/LGPL 2.1 | |
17 * | |
18 * The contents of this file are subject to the Mozilla Public License Version | |
19 * 1.1 (the "License"); you may not use this file except in compliance with | |
20 * the License. You may obtain a copy of the License at | |
21 * http://www.mozilla.org/MPL/ | |
22 * | |
23 * Software distributed under the License is distributed on an "AS IS" basis, | |
24 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License | |
25 * for the specific language governing rights and limitations under the | |
26 * License. | |
27 * | |
28 * The Original Code is Mozilla. | |
29 * | |
30 * The Initial Developer of the Original Code is IBM Corporation. | |
31 * Portions created by IBM Corporation are Copyright (C) 2003 | |
32 * IBM Corporation. All Rights Reserved. | |
33 * | |
34 * Contributor(s): | |
35 * Darin Fisher <darin@meer.net> | |
36 * | |
37 * Alternatively, the contents of this file may be used under the terms of | |
38 * either the GNU General Public License Version 2 or later (the "GPL"), or | |
39 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), | |
40 * in which case the provisions of the GPL or the LGPL are applicable instead | |
41 * of those above. If you wish to allow use of your version of this file only | |
42 * under the terms of either the GPL or the LGPL, and not to allow others to | |
43 * use your version of this file under the terms of the MPL, indicate your | |
44 * decision by deleting the provisions above and replace them with the notice | |
45 * and other provisions required by the GPL or the LGPL. If you do not delete | |
46 * the provisions above, a recipient may use your version of this file under | |
47 * the terms of any one of the MPL, the GPL or the LGPL. | |
48 * | |
49 * ***** END LICENSE BLOCK ***** */ | |
50 | |
51 // Set odd parity bit (in least significant bit position). | |
52 static uint8_t DESSetKeyParity(uint8_t x) { | |
53 if ((((x >> 7) ^ (x >> 6) ^ (x >> 5) ^ | |
54 (x >> 4) ^ (x >> 3) ^ (x >> 2) ^ | |
55 (x >> 1)) & 0x01) == 0) { | |
56 x |= 0x01; | |
57 } else { | |
58 x &= 0xfe; | |
59 } | |
60 return x; | |
61 } | |
62 | |
63 namespace net { | |
64 | |
65 void DESMakeKey(const uint8_t* raw, uint8_t* key) { | |
66 key[0] = DESSetKeyParity(raw[0]); | |
67 key[1] = DESSetKeyParity((raw[0] << 7) | (raw[1] >> 1)); | |
68 key[2] = DESSetKeyParity((raw[1] << 6) | (raw[2] >> 2)); | |
69 key[3] = DESSetKeyParity((raw[2] << 5) | (raw[3] >> 3)); | |
70 key[4] = DESSetKeyParity((raw[3] << 4) | (raw[4] >> 4)); | |
71 key[5] = DESSetKeyParity((raw[4] << 3) | (raw[5] >> 5)); | |
72 key[6] = DESSetKeyParity((raw[5] << 2) | (raw[6] >> 6)); | |
73 key[7] = DESSetKeyParity((raw[6] << 1)); | |
74 } | |
75 | |
76 void DESEncrypt(const uint8_t* key, const uint8_t* src, uint8_t* hash) { | |
77 crypto::EnsureOpenSSLInit(); | |
78 | |
79 DES_key_schedule ks; | |
80 DES_set_key( | |
81 reinterpret_cast<const DES_cblock*>(key), &ks); | |
82 | |
83 DES_ecb_encrypt(reinterpret_cast<const DES_cblock*>(src), | |
84 reinterpret_cast<DES_cblock*>(hash), &ks, DES_ENCRYPT); | |
85 } | |
86 | |
87 } // namespace net | |
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