Apache Portable Runtime

sha2.h

00001 /* Licensed to the Apache Software Foundation (ASF) under one or more
00002  * contributor license agreements.  See the NOTICE file distributed with
00003  * this work for additional information regarding copyright ownership.
00004  * The ASF licenses this file to You under the Apache License, Version 2.0
00005  * (the "License"); you may not use this file except in compliance with
00006  * the License.  You may obtain a copy of the License at
00007  *
00008  *     http://www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS,
00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * limitations under the License.
00015  */
00016 /*
00017  * FILE:        sha2.h
00018  * AUTHOR:      Aaron D. Gifford <me@aarongifford.com>
00019  * 
00020  * A licence was granted to the ASF by Aaron on 4 November 2003.
00021  */
00022 
00023 #ifndef __SHA2_H__
00024 #define __SHA2_H__
00025 
00026 #ifdef __cplusplus
00027 extern "C" {
00028 #endif
00029 
00030 #include "apr.h"
00031 
00032 /*** SHA-256 Various Length Definitions ***********************/
00033 #define SHA256_BLOCK_LENGTH             64
00034 #define SHA256_DIGEST_LENGTH            32
00035 #define SHA256_DIGEST_STRING_LENGTH     (SHA256_DIGEST_LENGTH * 2 + 1)
00036 
00037 
00038 /*** SHA-256/384/512 Context Structures *******************************/
00039 typedef struct _SHA256_CTX {
00040         apr_uint32_t    state[8];
00041         apr_uint64_t    bitcount;
00042         apr_byte_t      buffer[SHA256_BLOCK_LENGTH];
00043 } SHA256_CTX;
00044 
00045 
00046 /*** SHA-256/384/512 Function Prototypes ******************************/
00047 void apr__SHA256_Init(SHA256_CTX *);
00048 void apr__SHA256_Update(SHA256_CTX *, const apr_byte_t *, size_t);
00049 void apr__SHA256_Final(apr_byte_t [SHA256_DIGEST_LENGTH], SHA256_CTX *);
00050 char* apr__SHA256_End(SHA256_CTX *, char [SHA256_DIGEST_STRING_LENGTH]);
00051 char* apr__SHA256_Data(const apr_byte_t *, size_t,
00052                   char [SHA256_DIGEST_STRING_LENGTH]);
00053                   
00054 #ifdef  __cplusplus
00055 }
00056 #endif /* __cplusplus */
00057 
00058 #endif /* __SHA2_H__ */
00059 
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