1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
/*============================================================================
CMake - Cross Platform Makefile Generator
Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
Distributed under the OSI-approved BSD License (the "License");
see accompanying file Copyright.txt for details.
This software is distributed WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the License for more information.
============================================================================*/
#include "cmCryptoHash.h"
#include "cm_sha2.h"
#include <cmsys/FStream.hxx>
#include <cmsys/MD5.h>
//----------------------------------------------------------------------------
cmsys::auto_ptr<cmCryptoHash> cmCryptoHash::New(const char* algo)
{
if(strcmp(algo,"MD5") == 0)
{ return cmsys::auto_ptr<cmCryptoHash>(new cmCryptoHashMD5); }
else if(strcmp(algo,"SHA1") == 0)
{ return cmsys::auto_ptr<cmCryptoHash>(new cmCryptoHashSHA1); }
else if(strcmp(algo,"SHA224") == 0)
{ return cmsys::auto_ptr<cmCryptoHash>(new cmCryptoHashSHA224); }
else if(strcmp(algo,"SHA256") == 0)
{ return cmsys::auto_ptr<cmCryptoHash>(new cmCryptoHashSHA256); }
else if(strcmp(algo,"SHA384") == 0)
{ return cmsys::auto_ptr<cmCryptoHash>(new cmCryptoHashSHA384); }
else if(strcmp(algo,"SHA512") == 0)
{ return cmsys::auto_ptr<cmCryptoHash>(new cmCryptoHashSHA512); }
else
{ return cmsys::auto_ptr<cmCryptoHash>(0); }
}
//----------------------------------------------------------------------------
std::string cmCryptoHash::HashString(const std::string& input)
{
this->Initialize();
this->Append(reinterpret_cast<unsigned char const*>(input.c_str()),
static_cast<int>(input.size()));
return this->Finalize();
}
//----------------------------------------------------------------------------
std::string cmCryptoHash::HashFile(const std::string& file)
{
cmsys::ifstream fin(file.c_str(), std::ios::in | std::ios::binary);
if(!fin)
{
return "";
}
this->Initialize();
// Should be efficient enough on most system:
cm_sha2_uint64_t buffer[512];
char* buffer_c = reinterpret_cast<char*>(buffer);
unsigned char const* buffer_uc =
reinterpret_cast<unsigned char const*>(buffer);
// This copy loop is very sensitive on certain platforms with
// slightly broken stream libraries (like HPUX). Normally, it is
// incorrect to not check the error condition on the fin.read()
// before using the data, but the fin.gcount() will be zero if an
// error occurred. Therefore, the loop should be safe everywhere.
while(fin)
{
fin.read(buffer_c, sizeof(buffer));
if(int gcount = static_cast<int>(fin.gcount()))
{
this->Append(buffer_uc, gcount);
}
}
if(fin.eof())
{
return this->Finalize();
}
return "";
}
//----------------------------------------------------------------------------
cmCryptoHashMD5::cmCryptoHashMD5(): MD5(cmsysMD5_New())
{
}
//----------------------------------------------------------------------------
cmCryptoHashMD5::~cmCryptoHashMD5()
{
cmsysMD5_Delete(this->MD5);
}
//----------------------------------------------------------------------------
void cmCryptoHashMD5::Initialize()
{
cmsysMD5_Initialize(this->MD5);
}
//----------------------------------------------------------------------------
void cmCryptoHashMD5::Append(unsigned char const* buf, int sz)
{
cmsysMD5_Append(this->MD5, buf, sz);
}
//----------------------------------------------------------------------------
std::string cmCryptoHashMD5::Finalize()
{
char md5out[32];
cmsysMD5_FinalizeHex(this->MD5, md5out);
return std::string(md5out, 32);
}
#define cmCryptoHash_SHA_CLASS_IMPL(SHA) \
cmCryptoHash##SHA::cmCryptoHash##SHA(): SHA(new SHA_CTX) {} \
cmCryptoHash##SHA::~cmCryptoHash##SHA() { delete this->SHA; } \
void cmCryptoHash##SHA::Initialize() { SHA##_Init(this->SHA); } \
void cmCryptoHash##SHA::Append(unsigned char const* buf, int sz) \
{ SHA##_Update(this->SHA, buf, sz); } \
std::string cmCryptoHash##SHA::Finalize() \
{ \
char out[SHA##_DIGEST_STRING_LENGTH]; \
SHA##_End(this->SHA, out); \
return std::string(out, SHA##_DIGEST_STRING_LENGTH-1); \
}
cmCryptoHash_SHA_CLASS_IMPL(SHA1)
cmCryptoHash_SHA_CLASS_IMPL(SHA224)
cmCryptoHash_SHA_CLASS_IMPL(SHA256)
cmCryptoHash_SHA_CLASS_IMPL(SHA384)
cmCryptoHash_SHA_CLASS_IMPL(SHA512)
|
