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//      ./lib/current/include/md5.h

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//#####DESCRIPTIONBEGIN####

//

// Author(s):    hmt

// Contributors: hmt

// Date:         2000-05-30

// Purpose:      Port of UCD-SNMP distribution to eCos.

// Description:  

//              

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//####DESCRIPTIONEND####

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//==========================================================================

/********************************************************************

       Copyright 1989, 1991, 1992 by Carnegie Mellon University

                          Derivative Work -

Copyright 1996, 1998, 1999, 2000 The Regents of the University of California

                         All Rights Reserved

Permission to use, copy, modify and distribute this software and its

documentation for any purpose and without fee is hereby granted,

provided that the above copyright notice appears in all copies and

that both that copyright notice and this permission notice appear in

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the University of California not be used in advertising or publicity

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*********************************************************************/

/*

** **************************************************************************

** md5.h -- Header file for implementation of MD5 Message Digest Algorithm **

** Updated: 2/13/90 by Ronald L. Rivest                                    **

** (C) 1990 RSA Data Security, Inc.                                        **

** **************************************************************************

*/

#ifndef MD5_H

#define MD5_H

#ifdef __cplusplus

extern "C" {

#endif

/* MDstruct is the data structure for a message digest computation.

*/

typedef struct {

  unsigned int buffer[4];    /* Holds 4-word result of MD computation */

  unsigned char count[8];    /* Number of bits processed so far */

  unsigned int done;         /* Nonzero means MD computation finished */

} MDstruct, *MDptr;

/* MDbegin(MD)

** Input: MD -- an MDptr

** Initialize the MDstruct prepatory to doing a message digest computation.

*/

extern void MDbegin (MDptr);

/* MDupdate(MD,X,count)

** Input: MD -- an MDptr

**        X -- a pointer to an array of unsigned characters.

**        count -- the number of bits of X to use (an unsigned int).

** Updates MD using the first ``count'' bits of X.

** The array pointed to by X is not modified.

** If count is not a multiple of 8, MDupdate uses high bits of last byte.

** This is the basic input routine for a user.

** The routine terminates the MD computation when count < 512, so

** every MD computation should end with one call to MDupdate with a

** count less than 512.  Zero is OK for a count.

*/

extern int MDupdate (MDptr, unsigned char *, unsigned int);

/* MDprint(MD)

** Input: MD -- an MDptr

** Prints message digest buffer MD as 32 hexadecimal digits.

** Order is from low-order byte of buffer[0] to high-order byte of buffer[3].

** Each byte is printed with high-order hexadecimal digit first.

*/

extern void MDprint (MDptr);

int MDchecksum(u_char *data, size_t len, u_char *mac, size_t maclen);

int  MDsign(u_char *data, size_t len, u_char *mac, size_t maclen,

            u_char *secret, size_t secretlen);

void MDget(MDstruct *MD, u_char *buf, size_t buflen);

/*

** End of md5.h

****************************(cut)*****************************************/

#ifdef __cplusplus

}

#endif

#endif /* MD5_H */