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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