contrib/bind-9.5.2/lib/isc/include/isc/md5.h

   1 /*
   2  * Copyright (C) 2004-2007  Internet Systems Consortium, Inc. ("ISC")
   3  * Copyright (C) 2000, 2001  Internet Software Consortium.
   4  *
   5  * Permission to use, copy, modify, and/or distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
  10  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  11  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
  12  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  13  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  14  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  15  * PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 /* $Id: md5.h,v 1.16 2007/06/19 23:47:18 tbox Exp $ */
  19
  20 /*! \file isc/md5.h
  21  * \brief This is the header file for the MD5 message-digest algorithm.
  22  *
  23  * The algorithm is due to Ron Rivest.  This code was
  24  * written by Colin Plumb in 1993, no copyright is claimed.
  25  * This code is in the public domain; do with it what you wish.
  26  *
  27  * Equivalent code is available from RSA Data Security, Inc.
  28  * This code has been tested against that, and is equivalent,
  29  * except that you don't need to include two pages of legalese
  30  * with every copy.
  31  *
  32  * To compute the message digest of a chunk of bytes, declare an
  33  * MD5Context structure, pass it to MD5Init, call MD5Update as
  34  * needed on buffers full of bytes, and then call MD5Final, which
  35  * will fill a supplied 16-byte array with the digest.
  36  *
  37  * Changed so as no longer to depend on Colin Plumb's `usual.h'
  38  * header definitions; now uses stuff from dpkg's config.h
  39  *  - Ian Jackson <ijackson@nyx.cs.du.edu>.
  40  * Still in the public domain.
  41  */
  42
  43 #ifndef ISC_MD5_H
  44 #define ISC_MD5_H 1
  45
  46 #include <isc/lang.h>
  47 #include <isc/types.h>
  48
  49 #define ISC_MD5_DIGESTLENGTH 16U
  50
  51 typedef struct {
  52         isc_uint32_t buf[4];
  53         isc_uint32_t bytes[2];
  54         isc_uint32_t in[16];
  55 } isc_md5_t;
  56
  57 ISC_LANG_BEGINDECLS
  58
  59 void
  60 isc_md5_init(isc_md5_t *ctx);
  61
  62 void
  63 isc_md5_invalidate(isc_md5_t *ctx);
  64
  65 void
  66 isc_md5_update(isc_md5_t *ctx, const unsigned char *buf, unsigned int len);
  67
  68 void
  69 isc_md5_final(isc_md5_t *ctx, unsigned char *digest);
  70
  71 ISC_LANG_ENDDECLS
  72
  73 #endif /* ISC_MD5_H */