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130 lines
4.5 KiB
C
130 lines
4.5 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2023 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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/**
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* \file SDL_test_md5.h
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*
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* Include file for SDL test framework.
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*
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* This code is a part of the SDL2_test library, not the main SDL library.
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*/
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/*
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***********************************************************************
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** Header file for implementation of MD5 **
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** RSA Data Security, Inc. MD5 Message-Digest Algorithm **
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** Created: 2/17/90 RLR **
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** Revised: 12/27/90 SRD,AJ,BSK,JT Reference C version **
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** Revised (for MD5): RLR 4/27/91 **
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** -- G modified to have y&~z instead of y&z **
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** -- FF, GG, HH modified to add in last register done **
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** -- Access pattern: round 2 works mod 5, round 3 works mod 3 **
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** -- distinct additive constant for each step **
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** -- round 4 added, working mod 7 **
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***********************************************************************
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*/
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/*
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***********************************************************************
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** Message-digest routines: **
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** To form the message digest for a message M **
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** (1) Initialize a context buffer mdContext using MD5Init **
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** (2) Call MD5Update on mdContext and M **
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** (3) Call MD5Final on mdContext **
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** The message digest is now in mdContext->digest[0...15] **
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***********************************************************************
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*/
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#ifndef SDL_test_md5_h_
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#define SDL_test_md5_h_
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#include "begin_code.h"
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/* Set up for C function definitions, even when using C++ */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* ------------ Definitions --------- */
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/* typedef a 32-bit type */
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typedef unsigned long int MD5UINT4;
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/* Data structure for MD5 (Message-Digest) computation */
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typedef struct {
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MD5UINT4 i[2]; /* number of _bits_ handled mod 2^64 */
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MD5UINT4 buf[4]; /* scratch buffer */
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unsigned char in[64]; /* input buffer */
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unsigned char digest[16]; /* actual digest after Md5Final call */
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} SDLTest_Md5Context;
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/* ---------- Function Prototypes ------------- */
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/**
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* \brief initialize the context
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*
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* \param mdContext pointer to context variable
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*
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* Note: The function initializes the message-digest context
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* mdContext. Call before each new use of the context -
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* all fields are set to zero.
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*/
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void SDLTest_Md5Init(SDLTest_Md5Context * mdContext);
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/**
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* \brief update digest from variable length data
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*
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* \param mdContext pointer to context variable
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* \param inBuf pointer to data array/string
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* \param inLen length of data array/string
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*
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* Note: The function updates the message-digest context to account
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* for the presence of each of the characters inBuf[0..inLen-1]
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* in the message whose digest is being computed.
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*/
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void SDLTest_Md5Update(SDLTest_Md5Context * mdContext, unsigned char *inBuf,
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unsigned int inLen);
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/**
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* \brief complete digest computation
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*
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* \param mdContext pointer to context variable
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*
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* Note: The function terminates the message-digest computation and
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* ends with the desired message digest in mdContext.digest[0..15].
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* Always call before using the digest[] variable.
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*/
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void SDLTest_Md5Final(SDLTest_Md5Context * mdContext);
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/* Ends C function definitions when using C++ */
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#ifdef __cplusplus
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}
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#endif
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#include "close_code.h"
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#endif /* SDL_test_md5_h_ */
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/* vi: set ts=4 sw=4 expandtab: */
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