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/*
* sha1.h: Converting and comparing SHA1 checksums
*
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
* ====================================================================
*/
#ifndef SVN_LIBSVN_SUBR_SHA1_H
#define SVN_LIBSVN_SUBR_SHA1_H
#include <apr_pools.h>
#include "svn_types.h"
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/* The SHA1 digest for the empty string. */
const unsigned char *
svn_sha1__empty_string_digest(void);
/* Return the hex representation of DIGEST, which must be
* APR_SHA1_DIGESTSIZE bytes long, allocating the string in POOL.
*/
const char *
svn_sha1__digest_to_cstring_display(const unsigned char digest[],
apr_pool_t *pool);
/* Return the hex representation of DIGEST, which must be
* APR_SHA1_DIGESTSIZE bytes long, allocating the string in POOL.
* If DIGEST is all zeros, then return NULL.
*/
const char *
svn_sha1__digest_to_cstring(const unsigned char digest[],
apr_pool_t *pool);
/** Compare digests D1 and D2, each APR_SHA1_DIGESTSIZE bytes long.
* If neither is all zeros, and they do not match, then return FALSE;
* else return TRUE.
*/
svn_boolean_t
svn_sha1__digests_match(const unsigned char d1[],
const unsigned char d2[]);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* SVN_LIBSVN_SUBR_SHA1_H */
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