include/SDL_test_md5.h
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     1 /*
       
     2   Simple DirectMedia Layer
       
     3   Copyright (C) 1997-2012 Sam Lantinga <slouken@libsdl.org>
       
     4 
       
     5   This software is provided 'as-is', without any express or implied
       
     6   warranty.  In no event will the authors be held liable for any damages
       
     7   arising from the use of this software.
       
     8 
       
     9   Permission is granted to anyone to use this software for any purpose,
       
    10   including commercial applications, and to alter it and redistribute it
       
    11   freely, subject to the following restrictions:
       
    12 
       
    13   1. The origin of this software must not be misrepresented; you must not
       
    14      claim that you wrote the original software. If you use this software
       
    15      in a product, an acknowledgment in the product documentation would be
       
    16      appreciated but is not required.
       
    17   2. Altered source versions must be plainly marked as such, and must not be
       
    18      misrepresented as being the original software.
       
    19   3. This notice may not be removed or altered from any source distribution.
       
    20 */
       
    21 
       
    22 /**
       
    23  *  \file SDL_test_md5.h
       
    24  *  
       
    25  *  Include file for SDL test framework.
       
    26  *
       
    27  *  This code is a part of the SDL2_test library, not the main SDL library.
       
    28  */
       
    29 
       
    30 /*
       
    31  ***********************************************************************
       
    32  ** Header file for implementation of MD5                             **
       
    33  ** RSA Data Security, Inc. MD5 Message-Digest Algorithm              **
       
    34  ** Created: 2/17/90 RLR                                              **
       
    35  ** Revised: 12/27/90 SRD,AJ,BSK,JT Reference C version               **
       
    36  ** Revised (for MD5): RLR 4/27/91                                    **
       
    37  **   -- G modified to have y&~z instead of y&z                       **
       
    38  **   -- FF, GG, HH modified to add in last register done             **
       
    39  **   -- Access pattern: round 2 works mod 5, round 3 works mod 3     **
       
    40  **   -- distinct additive constant for each step                     **
       
    41  **   -- round 4 added, working mod 7                                 **
       
    42  ***********************************************************************
       
    43 */
       
    44 
       
    45 /*
       
    46  ***********************************************************************
       
    47  **  Message-digest routines:                                         **
       
    48  **  To form the message digest for a message M                       **
       
    49  **    (1) Initialize a context buffer mdContext using MD5Init        **
       
    50  **    (2) Call MD5Update on mdContext and M                          **
       
    51  **    (3) Call MD5Final on mdContext                                 **
       
    52  **  The message digest is now in mdContext->digest[0...15]           **
       
    53  ***********************************************************************
       
    54 */
       
    55 
       
    56 #ifndef _SDL_test_md5_h
       
    57 #define _SDL_test_md5_h
       
    58 
       
    59 #include "begin_code.h"
       
    60 /* Set up for C function definitions, even when using C++ */
       
    61 #ifdef __cplusplus
       
    62 /* *INDENT-OFF* */
       
    63 extern "C" {
       
    64 /* *INDENT-ON* */
       
    65 #endif
       
    66 
       
    67 /* ------------ Definitions --------- */
       
    68 
       
    69 /* typedef a 32-bit type */
       
    70   typedef unsigned long int MD5UINT4;
       
    71 
       
    72 /* Data structure for MD5 (Message-Digest) computation */
       
    73   typedef struct {
       
    74     MD5UINT4  i[2];		/* number of _bits_ handled mod 2^64 */
       
    75     MD5UINT4  buf[4];		/* scratch buffer */
       
    76     unsigned char in[64];	/* input buffer */
       
    77     unsigned char digest[16];	/* actual digest after Md5Final call */
       
    78   } SDLTest_Md5Context;
       
    79 
       
    80 /* ---------- Function Prototypes ------------- */
       
    81 
       
    82 /** 
       
    83  * /brief initialize the context
       
    84  *
       
    85  * /param  mdContext		pointer to context variable
       
    86  *
       
    87  * Note: The function initializes the message-digest context
       
    88  *       mdContext. Call before each new use of the context - 
       
    89  *       all fields are set to zero.
       
    90  */
       
    91  void SDLTest_Md5Init(SDLTest_Md5Context * mdContext);
       
    92 
       
    93 
       
    94 /**
       
    95  * /brief update digest from variable length data
       
    96  * 
       
    97  * /param  mdContext       pointer to context variable
       
    98  * /param  inBuf           pointer to data array/string
       
    99  * /param  inLen           length of data array/string
       
   100  *
       
   101  * Note: The function updates the message-digest context to account 
       
   102  *       for the presence of each of the characters inBuf[0..inLen-1]
       
   103  *       in the message whose digest is being computed.
       
   104 */
       
   105 
       
   106  void SDLTest_Md5Update(SDLTest_Md5Context * mdContext, unsigned char *inBuf,
       
   107 				 unsigned int inLen);
       
   108 
       
   109 
       
   110 /*
       
   111  * /brief complete digest computation
       
   112  *
       
   113  * /param mdContext		pointer to context variable
       
   114  *
       
   115  * Note: The function terminates the message-digest computation and
       
   116  *       ends with the desired message digest in mdContext.digest[0..15].
       
   117  *       Always call before using the digest[] variable.
       
   118 */
       
   119 
       
   120  void SDLTest_Md5Final(SDLTest_Md5Context * mdContext);
       
   121 
       
   122 
       
   123 /* Ends C function definitions when using C++ */
       
   124 #ifdef __cplusplus
       
   125 /* *INDENT-OFF* */
       
   126 }
       
   127 /* *INDENT-ON* */
       
   128 #endif
       
   129 #include "close_code.h"
       
   130 
       
   131 #endif /* _SDL_test_md5_h */
       
   132 
       
   133 /* vi: set ts=4 sw=4 expandtab: */