src/TortoiseMerge/libsvn_diff/md5.h

   1 /*
   2  * md5.h: Converting and comparing MD5 checksums
   3  *
   4  * ====================================================================
   5  * Copyright (c) 2008 CollabNet.  All rights reserved.
   6  *
   7  * This software is licensed as described in the file COPYING, which
   8  * you should have received as part of this distribution.  The terms
   9  * are also available at http://subversion.tigris.org/license-1.html.
  10  * If newer versions of this license are posted there, you may use a
  11  * newer version instead, at your option.
  12  *
  13  * This software consists of voluntary contributions made by many
  14  * individuals.  For exact contribution history, see the revision
  15  * history and logs, available at http://subversion.tigris.org/.
  16  * ====================================================================
  17  */
  18
  19 #ifndef SVN_LIBSVN_SUBR_MD5_H
  20 #define SVN_LIBSVN_SUBR_MD5_H
  21
  22 #include <apr_pools.h>
  23
  24 #include "svn_types.h"
  25
  26 #ifdef __cplusplus
  27 extern "C" {
  28 #endif /* __cplusplus */
  29
  30 \f
  31
  32 /* The MD5 digest for the empty string. */
  33 const unsigned char *
  34 svn_md5__empty_string_digest(void);
  35
  36
  37 /* Return the hex representation of DIGEST, which must be
  38  * APR_MD5_DIGESTSIZE bytes long, allocating the string in POOL.
  39  */
  40 const char *
  41 svn_md5__digest_to_cstring_display(const unsigned char digest[],
  42                                    apr_pool_t *pool);
  43
  44
  45 /* Return the hex representation of DIGEST, which must be
  46  * APR_MD5_DIGESTSIZE bytes long, allocating the string in POOL.
  47  * If DIGEST is all zeros, then return NULL.
  48  */
  49 const char *
  50 svn_md5__digest_to_cstring(const unsigned char digest[],
  51                            apr_pool_t *pool);
  52
  53
  54 /** Compare digests D1 and D2, each APR_MD5_DIGESTSIZE bytes long.
  55  * If neither is all zeros, and they do not match, then return FALSE;
  56  * else return TRUE.
  57  */
  58 svn_boolean_t
  59 svn_md5__digests_match(const unsigned char d1[],
  60                         const unsigned char d2[]);
  61
  62 #ifdef __cplusplus
  63 }
  64 #endif /* __cplusplus */
  65
  66 #endif /* SVN_LIBSVN_SUBR_MD5_H */