sha2.h revision 251875 
1/* Licensed to the Apache Software Foundation (ASF) under one or more
2 * contributor license agreements.  See the NOTICE file distributed with
3 * this work for additional information regarding copyright ownership.
4 * The ASF licenses this file to You under the Apache License, Version 2.0
5 * (the "License"); you may not use this file except in compliance with
6 * the License.  You may obtain a copy of the License at
7 *
8 *     http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16/*
17 * FILE:        sha2.h
18 * AUTHOR:      Aaron D. Gifford <me@aarongifford.com>
19 *
20 * A licence was granted to the ASF by Aaron on 4 November 2003.
21 */
22
23#ifndef __SHA2_H__
24#define __SHA2_H__
25
26#ifdef __cplusplus
27extern "C" {
28#endif
29
30#include "apr.h"
31
32/*** SHA-256/384/512 Various Length Definitions ***********************/
33#define SHA256_BLOCK_LENGTH             64
34#define SHA256_DIGEST_LENGTH            32
35#define SHA256_DIGEST_STRING_LENGTH     (SHA256_DIGEST_LENGTH * 2 + 1)
36#define SHA384_BLOCK_LENGTH             128
37#define SHA384_DIGEST_LENGTH            48
38#define SHA384_DIGEST_STRING_LENGTH     (SHA384_DIGEST_LENGTH * 2 + 1)
39#define SHA512_BLOCK_LENGTH             128
40#define SHA512_DIGEST_LENGTH            64
41#define SHA512_DIGEST_STRING_LENGTH     (SHA512_DIGEST_LENGTH * 2 + 1)
42
43
44/*** SHA-256/384/512 Context Structures *******************************/
45typedef struct _SHA256_CTX {
46        apr_uint32_t    state[8];
47        apr_uint64_t    bitcount;
48        apr_byte_t      buffer[SHA256_BLOCK_LENGTH];
49} SHA256_CTX;
50typedef struct _SHA512_CTX {
51        apr_uint64_t    state[8];
52        apr_uint64_t    bitcount[2];
53        apr_byte_t      buffer[SHA512_BLOCK_LENGTH];
54} SHA512_CTX;
55
56typedef SHA512_CTX SHA384_CTX;
57
58
59/*** SHA-256/384/512 Function Prototypes ******************************/
60void apr__SHA256_Init(SHA256_CTX *);
61void apr__SHA256_Update(SHA256_CTX *, const apr_byte_t *, size_t);
62void apr__SHA256_Final(apr_byte_t [SHA256_DIGEST_LENGTH], SHA256_CTX *);
63char* apr__SHA256_End(SHA256_CTX *, char [SHA256_DIGEST_STRING_LENGTH]);
64char* apr__SHA256_Data(const apr_byte_t *, size_t,
65                  char [SHA256_DIGEST_STRING_LENGTH]);
66
67void apr__SHA384_Init(SHA384_CTX *);
68void apr__SHA384_Update(SHA384_CTX *, const apr_byte_t *, size_t);
69void apr__SHA384_Final(apr_byte_t [SHA384_DIGEST_LENGTH], SHA384_CTX *);
70char* apr__SHA384_End(SHA384_CTX *, char [SHA384_DIGEST_STRING_LENGTH]);
71char* apr__SHA384_Data(const apr_byte_t *, size_t,
72                  char [SHA384_DIGEST_STRING_LENGTH]);
73
74void apr__SHA512_Init(SHA512_CTX *);
75void apr__SHA512_Update(SHA512_CTX *, const apr_byte_t *, size_t);
76void apr__SHA512_Final(apr_byte_t [SHA512_DIGEST_LENGTH], SHA512_CTX *);
77char* apr__SHA512_End(SHA512_CTX *, char [SHA512_DIGEST_STRING_LENGTH]);
78char* apr__SHA512_Data(const apr_byte_t *, size_t,
79                  char [SHA512_DIGEST_STRING_LENGTH]);
80
81#ifdef  __cplusplus
82}
83#endif /* __cplusplus */
84
85#endif /* __SHA2_H__ */
86
87