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
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
#include <qcryptographichash.h>
#ifdef Q_OS_SYMBIAN
#define _MD5_H_ // Needed to disable system header
#endif
#include "../../3rdparty/md5/md5.h"
#include "../../3rdparty/md5/md5.cpp"
#include "../../3rdparty/md4/md4.h"
#include "../../3rdparty/md4/md4.cpp"
#include "../../3rdparty/sha1/sha1.cpp"
QT_BEGIN_NAMESPACE
class QCryptographicHashPrivate
{
public:
QCryptographicHash::Algorithm method;
union {
MD5Context md5Context;
md4_context md4Context;
Sha1State sha1Context;
};
QByteArray result;
};
/*!
\class QCryptographicHash
\brief The QCryptographicHash class provides a way to generate cryptographic hashes.
\since 4.3
\ingroup tools
\reentrant
QCryptographicHash can be used to generate cryptographic hashes of binary or text data.
Currently MD4, MD5, and SHA-1 are supported.
*/
/*!
\enum QCryptographicHash::Algorithm
\value Md4 Generate an MD4 hash sum
\value Md5 Generate an MD5 hash sum
\value Sha1 Generate an SHA1 hash sum
*/
/*!
Constructs an object that can be used to create a cryptographic hash from data using \a method.
*/
QCryptographicHash::QCryptographicHash(Algorithm method)
: d(new QCryptographicHashPrivate)
{
d->method = method;
reset();
}
/*!
Destroys the object.
*/
QCryptographicHash::~QCryptographicHash()
{
delete d;
}
/*!
Resets the object.
*/
void QCryptographicHash::reset()
{
switch (d->method) {
case Md4:
md4_init(&d->md4Context);
break;
case Md5:
MD5Init(&d->md5Context);
break;
case Sha1:
sha1InitState(&d->sha1Context);
break;
}
d->result.clear();
}
/*!
Adds the first \a length chars of \a data to the cryptographic
hash.
*/
void QCryptographicHash::addData(const char *data, int length)
{
switch (d->method) {
case Md4:
md4_update(&d->md4Context, (const unsigned char *)data, length);
break;
case Md5:
MD5Update(&d->md5Context, (const unsigned char *)data, length);
break;
case Sha1:
sha1Update(&d->sha1Context, (const unsigned char *)data, length);
break;
}
d->result.clear();
}
/*!
/overload
*/
void QCryptographicHash::addData(const QByteArray &data)
{
addData(data.constData(), data.length());
}
/*!
Returns the final hash value.
\sa QByteArray::toHex()
*/
QByteArray QCryptographicHash::result() const
{
if (!d->result.isEmpty())
return d->result;
switch (d->method) {
case Md4: {
md4_context copy = d->md4Context;
d->result.resize(MD4_RESULTLEN);
md4_final(©, (unsigned char *)d->result.data());
break;
}
case Md5: {
MD5Context copy = d->md5Context;
d->result.resize(16);
MD5Final(©, (unsigned char *)d->result.data());
break;
}
case Sha1: {
Sha1State copy = d->sha1Context;
d->result.resize(20);
sha1FinalizeState(©);
sha1ToHash(©, (unsigned char *)d->result.data());
}
}
return d->result;
}
/*!
Returns the hash of \a data using \a method.
*/
QByteArray QCryptographicHash::hash(const QByteArray &data, Algorithm method)
{
QCryptographicHash hash(method);
hash.addData(data);
return hash.result();
}
QT_END_NAMESPACE
|
