CrystalSpace

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csutil/csmd5.h

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00001 /*
00002     Crystal Space utility library: MD5 class
00003     Original C code written by L. Peter Deutsch (see below)
00004     Adapted for Crystal Space by Michael Dale Long
00005     Completely re-engineered by Eric Sunshine <sunshine@sunshineco.com>
00006 
00007     This library is free software; you can redistribute it and/or
00008     modify it under the terms of the GNU Library General Public
00009     License as published by the Free Software Foundation; either
00010     version 2 of the License, or (at your option) any later version.
00011 
00012     This library is distributed in the hope that it will be useful,
00013     but WITHOUT ANY WARRANTY; without even the implied warranty of
00014     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015     Library General Public License for more details.
00016 
00017     You should have received a copy of the GNU Library General Public
00018     License along with this library; if not, write to the Free
00019     Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00020 
00021 */
00022 
00023 /*
00024   Copyright (C) 1999 Aladdin Enterprises.  All rights reserved.
00025 
00026   This software is provided 'as-is', without any express or implied
00027   warranty.  In no event will the authors be held liable for any damages
00028   arising from the use of this software.
00029 
00030   Permission is granted to anyone to use this software for any purpose,
00031   including commercial applications, and to alter it and redistribute it
00032   freely, subject to the following restrictions:
00033 
00034   1. The origin of this software must not be misrepresented; you must not
00035      claim that you wrote the original software. If you use this software
00036      in a product, an acknowledgment in the product documentation would be
00037      appreciated but is not required.
00038   2. Altered source versions must be plainly marked as such, and must not be
00039      misrepresented as being the original software.
00040   3. This notice may not be removed or altered from any source distribution.
00041 
00042   L. Peter Deutsch
00043   ghost@aladdin.com
00044 
00045  */
00064 #ifndef __CS_CSMD5_H__
00065 #define __CS_CSMD5_H__
00066 
00067 #include "csextern.h"
00068 #include "csutil/csstring.h"
00069 
00077 class CS_CRYSTALSPACE_EXPORT csMD5
00078 {
00079 public:
00081   typedef uint8 md5_byte_t;
00083   typedef uint32 md5_word_t;
00084 
00088   struct CS_CRYSTALSPACE_EXPORT md5_state_t
00089   {
00090     size_t count[2]; // message length in bits, lsw first
00091     md5_word_t abcd[4];  // digest buffer
00092     md5_byte_t buf[64];  // accumulate block
00093   };
00094 
00096   static void md5_init(md5_state_t*);
00098   static void md5_append(md5_state_t*, const md5_byte_t* data, size_t nbytes);
00100   static void md5_finish(md5_state_t*, md5_byte_t digest[16]);
00101 
00102 protected:
00103   static void md5_process(md5_state_t*, const md5_byte_t* data/*[64]*/);
00104 
00105 // Our friendly interface.
00106 public:
00108   struct CS_CRYSTALSPACE_EXPORT Digest
00109   {
00110     enum { DigestLen = 16 };
00112     md5_byte_t data[DigestLen];
00114     csString HexString() const;
00116     csString HEXString() const;
00117   };
00118 
00120   static Digest Encode(csString const&);
00122   static Digest Encode(const char*);
00124   static Digest Encode(const void*, size_t nbytes);
00125 };
00126 
00127 #endif // __CS_CSMD5_H__
00128 

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