/*
  Copyright 2005 by Easy Software Products

  This header file defines private APIs and should not be used in
  CUPS-based applications.

  Copyright (C) 1999 Aladdin Enterprises.  All rights reserved.

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the authors be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.

  L. Peter Deutsch
  ghost@aladdin.com

 */
/*$Id: md5.h 5232 2006-03-05 17:59:19Z mike $ */
/*
  Independent implementation of MD5 (RFC 1321).

  This code implements the MD5 Algorithm defined in RFC 1321.
  It is derived directly from the text of the RFC and not from the
  reference implementation.

  The original and principal author of md5.h is L. Peter Deutsch
  <ghost@aladdin.com>.  Other authors are noted in the change history
  that follows (in reverse chronological order):

  1999-11-04 lpd Edited comments slightly for automatic TOC extraction.
  1999-10-18 lpd Fixed typo in header comment (ansi2knr rather than md5);
	added conditionalization for C++ compilation from Martin
	Purschke <purschke@bnl.gov>.
  1999-05-03 lpd Original version.
 */

#ifndef _CUPS_MD5_H_
#  define _CUPS_MD5_H_

/* Define the state of the MD5 Algorithm. */
typedef struct _cups_md5_state_s {
    unsigned int count[2];		/* message length in bits, lsw first */
    unsigned int abcd[4];		/* digest buffer */
    unsigned char buf[64];		/* accumulate block */
} _cups_md5_state_t;

#  ifdef __cplusplus
extern "C" {
#  endif /* __cplusplus */

/* Initialize the algorithm. */
void _cupsMD5Init(_cups_md5_state_t *pms);

/* Append a string to the message. */
void _cupsMD5Append(_cups_md5_state_t *pms, const unsigned char *data, int nbytes);

/* Finish the message and return the digest. */
void _cupsMD5Finish(_cups_md5_state_t *pms, unsigned char digest[16]);

#  ifdef __cplusplus
}  /* end extern "C" */
#  endif /* __cplusplus */
#endif /* !_CUPS_MD5_H_ */
