/* * fnv1a.h : routines to create checksums derived from FNV-1a * * ==================================================================== * 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_FNV1A_H #define SVN_LIBSVN_SUBR_FNV1A_H #include <apr_pools.h> #include "svn_types.h" #ifdef __cplusplus extern "C" { #endif /* __cplusplus */ /* Opaque FNV-1a checksum creation context type. */ typedef struct svn_fnv1a_32__context_t svn_fnv1a_32__context_t; /* Return a new FNV-1a checksum creation context allocated in POOL. */ svn_fnv1a_32__context_t * svn_fnv1a_32__context_create(apr_pool_t *pool); /* Reset the FNV-1a checksum CONTEXT to initial state. */ void svn_fnv1a_32__context_reset(svn_fnv1a_32__context_t *context); /* Feed LEN bytes from DATA into the FNV-1a checksum creation CONTEXT. */ void svn_fnv1a_32__update(svn_fnv1a_32__context_t *context, const void *data, apr_size_t len); /* Return the FNV-1a checksum over all data fed into CONTEXT. */ apr_uint32_t svn_fnv1a_32__finalize(svn_fnv1a_32__context_t *context); /* Opaque modified FNV-1a checksum creation context type. */ typedef struct svn_fnv1a_32x4__context_t svn_fnv1a_32x4__context_t; /* Return a new modified FNV-1a checksum creation context allocated in POOL. */ svn_fnv1a_32x4__context_t * svn_fnv1a_32x4__context_create(apr_pool_t *pool); /* Reset the modified FNV-1a checksum CONTEXT to initial state. */ void svn_fnv1a_32x4__context_reset(svn_fnv1a_32x4__context_t *context); /* Feed LEN bytes from DATA into the modified FNV-1a checksum creation * CONTEXT. */ void svn_fnv1a_32x4__update(svn_fnv1a_32x4__context_t *context, const void *data, apr_size_t len); /* Return the modified FNV-1a checksum over all data fed into CONTEXT. */ apr_uint32_t svn_fnv1a_32x4__finalize(svn_fnv1a_32x4__context_t *context); /* Set HASHES to the 4 partial hash sums produced by the modified FVN-1a * over INPUT of LEN bytes. */ void svn__fnv1a_32x4_raw(apr_uint32_t hashes[4], const void *input, apr_size_t len); #ifdef __cplusplus } #endif /* __cplusplus */ #endif /* SVN_LIBSVN_SUBR_FNV1A_H */