1 | /* |
2 | Copyright (C) 2004, 2006 Brad Hards <bradh@frogmouth.net> |
3 | |
4 | Permission is hereby granted, free of charge, to any person obtaining a copy |
5 | of this software and associated documentation files (the "Software"), to deal |
6 | in the Software without restriction, including without limitation the rights |
7 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
8 | copies of the Software, and to permit persons to whom the Software is |
9 | furnished to do so, subject to the following conditions: |
10 | |
11 | The above copyright notice and this permission notice shall be included in |
12 | all copies or substantial portions of the Software. |
13 | |
14 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
15 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
16 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
17 | AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN |
18 | AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
19 | CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
20 | */ |
21 | |
22 | // QtCrypto has the declarations for all of QCA |
23 | #include <QtCrypto> |
24 | |
25 | #include <QCoreApplication> |
26 | #include <QDebug> |
27 | |
28 | // needed for printf |
29 | #include <cstdio> |
30 | |
31 | #ifdef QT_STATICPLUGIN |
32 | #include "import_plugins.h" |
33 | #endif |
34 | |
35 | int main(int argc, char **argv) |
36 | { |
37 | // the Initializer object sets things up, and |
38 | // also does cleanup when it goes out of scope |
39 | QCA::Initializer init; |
40 | |
41 | QCoreApplication app(argc, argv); |
42 | |
43 | qDebug() << "This example shows hashed MAC" ; |
44 | |
45 | // we use the first argument as the data to authenticate |
46 | // if an argument is provided. Use "hello" if no argument |
47 | QByteArray arg = (argc >= 2) ? argv[1] : "hello" ; |
48 | |
49 | // we use the second argument as the key to authenticate |
50 | // with, if two arguments are provided. Use "secret" as |
51 | // the key if less than two arguments. |
52 | QCA::SecureArray key((argc >= 3) ? argv[2] : "secret" ); |
53 | |
54 | // must always check that an algorithm is supported before using it |
55 | if (!QCA::isSupported(features: "hmac(sha1)" )) { |
56 | printf(format: "HMAC(SHA1) not supported!\n" ); |
57 | } else { |
58 | // create the required object using HMAC with SHA-1, and an |
59 | // empty key. |
60 | QCA::MessageAuthenticationCode hmacObject(QStringLiteral("hmac(sha1)" ), QCA::SecureArray()); |
61 | |
62 | // create the key |
63 | QCA::SymmetricKey keyObject(key); |
64 | |
65 | // set the HMAC object to use the key |
66 | hmacObject.setup(key); |
67 | // that could also have been done in the |
68 | // QCA::MessageAuthenticationCode constructor |
69 | |
70 | // we split it into two parts to show incremental update |
71 | QCA::SecureArray part1(arg.left(len: 3)); // three chars - "hel" |
72 | QCA::SecureArray part2(arg.mid(index: 3)); // the rest - "lo" |
73 | hmacObject.update(array: part1); |
74 | hmacObject.update(array: part2); |
75 | |
76 | // no more updates after calling final. |
77 | QCA::SecureArray resultArray = hmacObject.final(); |
78 | |
79 | // convert the result into printable hexadecimal. |
80 | QString result = QCA::arrayToHex(array: resultArray.toByteArray()); |
81 | printf(format: "HMAC(SHA1) of \"%s\" with \"%s\" = [%s]\n" , arg.data(), key.data(), result.toLatin1().data()); |
82 | } |
83 | |
84 | return 0; |
85 | } |
86 | |