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svn_md5.h

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00001 /**
00002  * @copyright
00003  * ====================================================================
00004  * Copyright (c) 2000-2004 CollabNet.  All rights reserved.
00005  *
00006  * This software is licensed as described in the file COPYING, which
00007  * you should have received as part of this distribution.  The terms
00008  * are also available at http://subversion.tigris.org/license-1.html.
00009  * If newer versions of this license are posted there, you may use a
00010  * newer version instead, at your option.
00011  *
00012  * This software consists of voluntary contributions made by many
00013  * individuals.  For exact contribution history, see the revision
00014  * history and logs, available at http://subversion.tigris.org/.
00015  * ====================================================================
00016  * @endcopyright
00017  *
00018  * @file svn_md5.h
00019  * @brief Converting and comparing MD5 checksums.
00020  */
00021 
00022 #ifndef SVN_MD5_H
00023 #define SVN_MD5_H
00024 
00025 #include <apr_pools.h>
00026 #include <apr_md5.h>
00027 #include "svn_error.h"
00028 #include "svn_pools.h"
00029 
00030 #ifdef __cplusplus
00031 extern "C" {
00032 #endif /* __cplusplus */
00033 
00034 
00035 
00036 /** The MD5 digest for the empty string. */
00037 const unsigned char *svn_md5_empty_string_digest(void);
00038 
00039 
00040 /** Return the hex representation of @a digest, which must be
00041  * @c APR_MD5_DIGESTSIZE bytes long, allocating the string in @a pool.
00042  */
00043 const char *svn_md5_digest_to_cstring_display(const unsigned char digest[],
00044                                               apr_pool_t *pool);
00045 
00046 
00047 /** Return the hex representation of @a digest, which must be
00048  * @c APR_MD5_DIGESTSIZE bytes long, allocating the string in @a pool.
00049  * If @a digest is all zeros, then return NULL.
00050  */
00051 const char *svn_md5_digest_to_cstring(const unsigned char digest[],
00052                                       apr_pool_t *pool);
00053 
00054 
00055 /** Compare digests @a d1 and @a d2, each @c APR_MD5_DIGESTSIZE bytes long.
00056  * If neither is all zeros, and they do not match, then return false;
00057  * else return true.
00058  */
00059 svn_boolean_t svn_md5_digests_match(const unsigned char d1[],
00060                                     const unsigned char d2[]);
00061 
00062 #ifdef __cplusplus
00063 }
00064 #endif /* __cplusplus */
00065 
00066 #endif /* SVN_MD5_H */

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