contrib/bind-9.5.2/lib/isc/include/isc/hmacmd5.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: hmacmd5.h,v 1.12 2007/06/19 23:47:18 tbox Exp $ */
  19
  20 /*! \file isc/hmacmd5.h
  21  * \brief This is the header file for the HMAC-MD5 keyed hash algorithm
  22  * described in RFC2104.
  23  */
  24
  25 #ifndef ISC_HMACMD5_H
  26 #define ISC_HMACMD5_H 1
  27
  28 #include <isc/lang.h>
  29 #include <isc/md5.h>
  30 #include <isc/types.h>
  31
  32 #define ISC_HMACMD5_KEYLENGTH 64
  33
  34 typedef struct {
  35         isc_md5_t md5ctx;
  36         unsigned char key[ISC_HMACMD5_KEYLENGTH];
  37 } isc_hmacmd5_t;
  38
  39 ISC_LANG_BEGINDECLS
  40
  41 void
  42 isc_hmacmd5_init(isc_hmacmd5_t *ctx, const unsigned char *key,
  43                  unsigned int len);
  44
  45 void
  46 isc_hmacmd5_invalidate(isc_hmacmd5_t *ctx);
  47
  48 void
  49 isc_hmacmd5_update(isc_hmacmd5_t *ctx, const unsigned char *buf,
  50                    unsigned int len);
  51
  52 void
  53 isc_hmacmd5_sign(isc_hmacmd5_t *ctx, unsigned char *digest);
  54
  55 isc_boolean_t
  56 isc_hmacmd5_verify(isc_hmacmd5_t *ctx, unsigned char *digest);
  57
  58 isc_boolean_t
  59 isc_hmacmd5_verify2(isc_hmacmd5_t *ctx, unsigned char *digest, size_t len);
  60
  61 ISC_LANG_ENDDECLS
  62
  63 #endif /* ISC_HMACMD5_H */