| // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "net/http/des.h" |
| |
| #include "base/logging.h" |
| #include "crypto/openssl_util.h" |
| #include "third_party/boringssl/src/include/openssl/des.h" |
| |
| // The iOS version of DESEncrypt is our own code. |
| // DESSetKeyParity and DESMakeKey are based on |
| // mozilla/security/manager/ssl/src/nsNTLMAuthModule.cpp, CVS rev. 1.14. |
| |
| /* ***** BEGIN LICENSE BLOCK ***** |
| * Version: MPL 1.1/GPL 2.0/LGPL 2.1 |
| * |
| * The contents of this file are subject to the Mozilla Public License Version |
| * 1.1 (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * http://www.mozilla.org/MPL/ |
| * |
| * Software distributed under the License is distributed on an "AS IS" basis, |
| * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License |
| * for the specific language governing rights and limitations under the |
| * License. |
| * |
| * The Original Code is Mozilla. |
| * |
| * The Initial Developer of the Original Code is IBM Corporation. |
| * Portions created by IBM Corporation are Copyright (C) 2003 |
| * IBM Corporation. All Rights Reserved. |
| * |
| * Contributor(s): |
| * Darin Fisher <darin@meer.net> |
| * |
| * Alternatively, the contents of this file may be used under the terms of |
| * either the GNU General Public License Version 2 or later (the "GPL"), or |
| * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), |
| * in which case the provisions of the GPL or the LGPL are applicable instead |
| * of those above. If you wish to allow use of your version of this file only |
| * under the terms of either the GPL or the LGPL, and not to allow others to |
| * use your version of this file under the terms of the MPL, indicate your |
| * decision by deleting the provisions above and replace them with the notice |
| * and other provisions required by the GPL or the LGPL. If you do not delete |
| * the provisions above, a recipient may use your version of this file under |
| * the terms of any one of the MPL, the GPL or the LGPL. |
| * |
| * ***** END LICENSE BLOCK ***** */ |
| |
| // Set odd parity bit (in least significant bit position). |
| static uint8_t DESSetKeyParity(uint8_t x) { |
| if ((((x >> 7) ^ (x >> 6) ^ (x >> 5) ^ |
| (x >> 4) ^ (x >> 3) ^ (x >> 2) ^ |
| (x >> 1)) & 0x01) == 0) { |
| x |= 0x01; |
| } else { |
| x &= 0xfe; |
| } |
| return x; |
| } |
| |
| namespace net { |
| |
| void DESMakeKey(const uint8_t* raw, uint8_t* key) { |
| key[0] = DESSetKeyParity(raw[0]); |
| key[1] = DESSetKeyParity((raw[0] << 7) | (raw[1] >> 1)); |
| key[2] = DESSetKeyParity((raw[1] << 6) | (raw[2] >> 2)); |
| key[3] = DESSetKeyParity((raw[2] << 5) | (raw[3] >> 3)); |
| key[4] = DESSetKeyParity((raw[3] << 4) | (raw[4] >> 4)); |
| key[5] = DESSetKeyParity((raw[4] << 3) | (raw[5] >> 5)); |
| key[6] = DESSetKeyParity((raw[5] << 2) | (raw[6] >> 6)); |
| key[7] = DESSetKeyParity((raw[6] << 1)); |
| } |
| |
| void DESEncrypt(const uint8_t* key, const uint8_t* src, uint8_t* hash) { |
| crypto::EnsureOpenSSLInit(); |
| |
| DES_key_schedule ks; |
| DES_set_key( |
| reinterpret_cast<const DES_cblock*>(key), &ks); |
| |
| DES_ecb_encrypt(reinterpret_cast<const DES_cblock*>(src), |
| reinterpret_cast<DES_cblock*>(hash), &ks, DES_ENCRYPT); |
| } |
| |
| } // namespace net |