125 lines
3.6 KiB
C
Executable file
125 lines
3.6 KiB
C
Executable file
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/*
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***********************************************************************
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** utl_md5.h -- 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 _utl_md5_h
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#define _utl_md5_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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} MD5_CTX;
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/* ---------- Function Prototypes ------------- */
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#ifdef WIN32
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#ifdef BUILD_DLL
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#define DLLINTERFACE __declspec(dllexport)
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#else
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#define DLLINTERFACE __declspec(dllimport)
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#endif
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#else
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#define DLLINTERFACE
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#endif
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/*
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* utl_md5Init: initialize the context
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*
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* Parameters:
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*
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* mdContext pointer to context variable
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*
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* Return value:
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*
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* none
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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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DLLINTERFACE void utl_md5Init(MD5_CTX * mdContext);
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/*
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* utl_md5update: update digest from variable length data
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*
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* Parameters:
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*
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* mdContext pointer to context variable
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* inBuf pointer to data array/string
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* inLen length of data array/string
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*
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* Return value:
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*
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* none
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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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DLLINTERFACE void utl_md5Update(MD5_CTX * mdContext, unsigned char *inBuf,
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unsigned int inLen);
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/*
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* utl_md5Final: complete digest computation
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*
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* Parameters:
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*
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* mdContext pointer to context variable
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*
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* Return value:
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*
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* none
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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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DLLINTERFACE void utl_md5Final(MD5_CTX * 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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#endif /* _utl_md5_h */
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