1 /* $Id: cpl_sha256.h 4066b56114dce5dd680e28b43526396ce43a6d7e 2018-02-14 12:47:28Z Even 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 
43 CPL_C_START
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 
68 // Not exported for now
69 GByte* CPL_RSA_SHA256_Sign(const char* pszPrivateKey,
70                                   const void* pabyData,
71                                   unsigned int nDataLen,
72                                   unsigned int* pnSignatureLen);
73 
74 CPL_C_END
75 
76 #endif /* #ifndef DOXYGEN_SKIP */
77 
78 #endif  /* CPL_SHA256_INCLUDED_H */
79