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63 lines
2.0 KiB
63 lines
2.0 KiB
/*************************************************************************** |
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* _ _ ____ _ |
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* Project ___| | | | _ \| | |
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* / __| | | | |_) | | |
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* | (__| |_| | _ <| |___ |
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* \___|\___/|_| \_\_____| |
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* |
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* Copyright (C) 2015, Steve Holme, <steve_holme@hotmail.com>. |
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* |
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* This software is licensed as described in the file COPYING, which |
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* you should have received as part of this distribution. The terms |
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* are also available at https://curl.haxx.se/docs/copyright.html. |
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* |
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell |
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* copies of the Software, and permit persons to whom the Software is |
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* furnished to do so, under the terms of the COPYING file. |
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* |
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY |
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* KIND, either express or implied. |
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* |
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***************************************************************************/ |
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#include "curl_setup.h" |
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#if defined(USE_NTLM) && !defined(USE_OPENSSL) |
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#include "curl_des.h" |
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/* |
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* Curl_des_set_odd_parity() |
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* |
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* This is used to apply odd parity to the given byte array. It is typically |
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* used by when a cryptography engines doesn't have it's own version. |
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* |
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* The function is a port of the Java based oddParity() function over at: |
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* |
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* http://davenport.sourceforge.net/ntlm.html |
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* |
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* Parameters: |
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* |
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* bytes [in/out] - The data whose parity bits are to be adjusted for |
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* odd parity. |
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* len [out] - The length of the data. |
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*/ |
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void Curl_des_set_odd_parity(unsigned char *bytes, size_t len) |
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{ |
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size_t i; |
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for(i = 0; i < len; i++) { |
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unsigned char b = bytes[i]; |
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bool needs_parity = (((b >> 7) ^ (b >> 6) ^ (b >> 5) ^ |
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(b >> 4) ^ (b >> 3) ^ (b >> 2) ^ |
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(b >> 1)) & 0x01) == 0; |
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if(needs_parity) |
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bytes[i] |= 0x01; |
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else |
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bytes[i] &= 0xfe; |
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} |
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} |
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#endif /* USE_NTLM && !USE_OPENSSL */
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