md5.h

00001 /*
00002   Copyright (C) 1999, 2002 Aladdin Enterprises.  All rights reserved.
00003 
00004   This software is provided 'as-is', without any express or implied
00005   warranty.  In no event will the authors be held liable for any damages
00006   arising from the use of this software.
00007 
00008   Permission is granted to anyone to use this software for any purpose,
00009   including commercial applications, and to alter it and redistribute it
00010   freely, subject to the following restrictions:
00011 
00012   1. The origin of this software must not be misrepresented; you must not
00013      claim that you wrote the original software. If you use this software
00014      in a product, an acknowledgment in the product documentation would be
00015      appreciated but is not required.
00016   2. Altered source versions must be plainly marked as such, and must not be
00017      misrepresented as being the original software.
00018   3. This notice may not be removed or altered from any source distribution.
00019 
00020   L. Peter Deutsch
00021   ghost@aladdin.com
00022 
00023  */
00024 /* $Id: md5.h,v 1.4 2002/04/13 19:20:28 lpd Exp $ */
00025 /*
00026   Independent implementation of MD5 (RFC 1321).
00027 
00028   This code implements the MD5 Algorithm defined in RFC 1321, whose
00029   text is available at
00030         http://www.ietf.org/rfc/rfc1321.txt
00031   The code is derived from the text of the RFC, including the test suite
00032   (section A.5) but excluding the rest of Appendix A.  It does not include
00033   any code or documentation that is identified in the RFC as being
00034   copyrighted.
00035 
00036   The original and principal author of md5.h is L. Peter Deutsch
00037   <ghost@aladdin.com>.  Other authors are noted in the change history
00038   that follows (in reverse chronological order):
00039 
00040   2002-04-13 lpd Removed support for non-ANSI compilers; removed
00041         references to Ghostscript; clarified derivation from RFC 1321;
00042         now handles byte order either statically or dynamically.
00043   1999-11-04 lpd Edited comments slightly for automatic TOC extraction.
00044   1999-10-18 lpd Fixed typo in header comment (ansi2knr rather than md5);
00045         added conditionalization for C++ compilation from Martin
00046         Purschke <purschke@bnl.gov>.
00047   1999-05-03 lpd Original version.
00048  */
00049 
00050 #ifndef MD5_H__
00051 #define MD5_H__
00052 
00053 #include "macros.h"
00054 
00055 #include <string>
00056 
00057 namespace gloox
00058 {
00059 
00069   class GLOOX_API MD5
00070   {
00071     public:
00075       MD5();
00076 
00080       virtual ~MD5();
00081 
00087       void feed( const unsigned char *data, int bytes );
00088 
00093       void feed( const std::string& data );
00094 
00099       void finalize();
00100 
00105       const std::string hex();
00106 
00111       const std::string binary();
00112 
00116       void reset();
00117 
00118     private:
00119       struct MD5State
00120       {
00121           unsigned int count[2]; /* message length in bits, lsw first */
00122           unsigned int abcd[4]; /* digest buffer */
00123           unsigned char buf[64]; /* accumulate block */
00124       } m_state;
00125 
00126       void init();
00127       void process( const unsigned char *data );
00128 
00129       static const unsigned char pad[64];
00130 
00131       bool m_finished;
00132 
00133   };
00134 
00135 }
00136 
00137 #endif // MD5_H__

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