contrib/bind-9.5.2/lib/isc/include/isc/sha1.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 #ifndef ISC_SHA1_H
  19 #define ISC_SHA1_H 1
  20
  21 /* $Id: sha1.h,v 1.17 2007/06/19 23:47:18 tbox Exp $ */
  22
  23 /*      $NetBSD: sha1.h,v 1.2 1998/05/29 22:55:44 thorpej Exp $ */
  24
  25 /*! \file isc/sha1.h
  26  * \brief SHA-1 in C
  27  * \author By Steve Reid <steve@edmweb.com>
  28  * \note 100% Public Domain
  29  */
  30
  31 #include <isc/lang.h>
  32 #include <isc/types.h>
  33
  34 #define ISC_SHA1_DIGESTLENGTH 20U
  35 #define ISC_SHA1_BLOCK_LENGTH 64U
  36
  37 typedef struct {
  38         isc_uint32_t state[5];
  39         isc_uint32_t count[2];
  40         unsigned char buffer[ISC_SHA1_BLOCK_LENGTH];
  41 } isc_sha1_t;
  42
  43 ISC_LANG_BEGINDECLS
  44
  45 void
  46 isc_sha1_init(isc_sha1_t *ctx);
  47
  48 void
  49 isc_sha1_invalidate(isc_sha1_t *ctx);
  50
  51 void
  52 isc_sha1_update(isc_sha1_t *ctx, const unsigned char *data, unsigned int len);
  53
  54 void
  55 isc_sha1_final(isc_sha1_t *ctx, unsigned char *digest);
  56
  57 ISC_LANG_ENDDECLS
  58
  59 #endif /* ISC_SHA1_H */