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cpl_sha256.h
1 /* $Id: cpl_sha256.h 31777 2015-11-26 14:14:41Z 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 #include "cpl_port.h"
33
34 #define CPL_SHA256_HASH_SIZE 32 /* 256 bit */
35 #define CPL_SHA256_HASH_WORDS 8
36
37 #ifndef GUInt64
38 #define GUInt64 GUIntBig
39 #endif
40
41 CPL_C_START
42
43 struct _CPL_SHA256Context {
44 GUInt64 totalLength;
45 GUInt32 hash[CPL_SHA256_HASH_WORDS];
46 GUInt32 bufferLength;
47 union {
48 GUInt32 words[16];
49 GByte bytes[64];
50 } buffer;
51 };
52 typedef struct _CPL_SHA256Context CPL_SHA256Context;
53
54 void CPL_DLL CPL_SHA256Init(CPL_SHA256Context * sc);
55
56 void CPL_DLL CPL_SHA256Update(CPL_SHA256Context * sc, const void *data, size_t len);
57
58 void CPL_DLL CPL_SHA256Final(CPL_SHA256Context * sc, GByte hash[CPL_SHA256_HASH_SIZE]);
59
60 void CPL_DLL CPL_SHA256(const void *data, size_t len, GByte hash[CPL_SHA256_HASH_SIZE]);
61
62 void CPL_DLL CPL_HMAC_SHA256(const void *pKey, size_t nKeyLen,
63 const void *pabyMessage, size_t nMessageLen,
64 GByte abyDigest[CPL_SHA256_HASH_SIZE]);
65
66 CPL_C_END
67
68 #endif /* CPL_SHA256_INCLUDED_H */
cpl_port.h
Core portability definitions for CPL.
_CPL_SHA256Context
Definition: cpl_sha256.h:43

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