GDAL
cpl_sha256.h
1 /* $Id: cpl_sha256.h 34921 2016-08-04 22:26:31Z rouault $ */
2 
3 /* The MIT License
4 
5  Copyright (C) 2011 Zilong Tan (tzlloch@gmail.com)
6  Copyright (C) 2015 Even Rouault <even.rouault at spatialys.com>
7 
8  Permission is hereby granted, free of charge, to any person obtaining
9  a copy of this software and associated documentation files (the
10  "Software"), to deal in the Software without restriction, including
11  without limitation the rights to use, copy, modify, merge, publish,
12  distribute, sublicense, and/or sell copies of the Software, and to
13  permit persons to whom the Software is furnished to do so, subject to
14  the following conditions:
15 
16  The above copyright notice and this permission notice shall be
17  included in all copies or substantial portions of the Software.
18 
19  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
20  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
22  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
23  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
24  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
25  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
26  SOFTWARE.
27 */
28 
29 #ifndef CPL_SHA256_INCLUDED_H
30 #define CPL_SHA256_INCLUDED_H
31 
32 #ifndef DOXYGEN_SKIP
33 
34 #include "cpl_port.h"
35 
36 #define CPL_SHA256_HASH_SIZE 32 /* 256 bit */
37 #define CPL_SHA256_HASH_WORDS 8
38 
39 #ifndef GUInt64
40 #define GUInt64 GUIntBig
41 #endif
42 
44 
45 struct _CPL_SHA256Context {
46  GUInt64 totalLength;
47  GUInt32 hash[CPL_SHA256_HASH_WORDS];
48  GUInt32 bufferLength;
49  union {
50  GUInt32 words[16];
51  GByte bytes[64];
52  } buffer;
53 };
54 typedef struct _CPL_SHA256Context CPL_SHA256Context;
55 
56 void CPL_DLL CPL_SHA256Init(CPL_SHA256Context * sc);
57 
58 void CPL_DLL CPL_SHA256Update(CPL_SHA256Context * sc, const void *data, size_t len);
59 
60 void CPL_DLL CPL_SHA256Final(CPL_SHA256Context * sc, GByte hash[CPL_SHA256_HASH_SIZE]);
61 
62 void CPL_DLL CPL_SHA256(const void *data, size_t len, GByte hash[CPL_SHA256_HASH_SIZE]);
63 
64 void CPL_DLL CPL_HMAC_SHA256(const void *pKey, size_t nKeyLen,
65  const void *pabyMessage, size_t nMessageLen,
66  GByte abyDigest[CPL_SHA256_HASH_SIZE]);
67 
69 
70 #endif /* #ifndef DOXYGEN_SKIP */
71 
72 #endif /* CPL_SHA256_INCLUDED_H */
Core portability definitions for CPL.
#define CPL_C_START
Macro to start a block of C symbols.
Definition: cpl_port.h:352
unsigned int GUInt32
Unsigned int32 type.
Definition: cpl_port.h:199
unsigned char GByte
Unsigned byte type.
Definition: cpl_port.h:207
GUIntBig GUInt64
Unsigned 64 bit integer type.
Definition: cpl_port.h:271
#define CPL_C_END
Macro to end a block of C symbols.
Definition: cpl_port.h:354

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