1 /*
2 * Copyright (C) 2010 Felix Geyer <debfx@fobos.de>
3 *
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 2 or (at your option)
7 * version 3 of the License.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
16 */
17
18 #include "TestSymmetricCipher.h"
19
20 #include <QBuffer>
21 #include <QTest>
22
23 #include "crypto/Crypto.h"
24 #include "crypto/SymmetricCipher.h"
25 #include "streams/SymmetricCipherStream.h"
26
QTEST_GUILESS_MAIN(TestSymmetricCipher)27 QTEST_GUILESS_MAIN(TestSymmetricCipher)
28
29 void TestSymmetricCipher::initTestCase()
30 {
31 QVERIFY(Crypto::init());
32 }
33
testAes256CbcEncryption()34 void TestSymmetricCipher::testAes256CbcEncryption()
35 {
36 // http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-38a.pdf
37
38 QByteArray key = QByteArray::fromHex("603deb1015ca71be2b73aef0857d77811f352c073b6108d72d9810a30914dff4");
39 QByteArray iv = QByteArray::fromHex("000102030405060708090a0b0c0d0e0f");
40 QByteArray plainText = QByteArray::fromHex("6bc1bee22e409f96e93d7e117393172a");
41 plainText.append(QByteArray::fromHex("ae2d8a571e03ac9c9eb76fac45af8e51"));
42 QByteArray cipherText = QByteArray::fromHex("f58c4c04d6e5f1ba779eabfb5f7bfbd6");
43 cipherText.append(QByteArray::fromHex("9cfc4e967edb808d679f777bc6702c7d"));
44 bool ok;
45
46 SymmetricCipher cipher(SymmetricCipher::Aes256, SymmetricCipher::Cbc, SymmetricCipher::Encrypt);
47 QVERIFY(cipher.init(key, iv));
48 QCOMPARE(cipher.blockSize(), 16);
49
50 QCOMPARE(cipher.process(plainText, &ok),
51 cipherText);
52 QVERIFY(ok);
53
54 QBuffer buffer;
55 SymmetricCipherStream stream(&buffer, SymmetricCipher::Aes256, SymmetricCipher::Cbc,
56 SymmetricCipher::Encrypt);
57 QVERIFY(stream.init(key, iv));
58 buffer.open(QIODevice::WriteOnly);
59 QVERIFY(stream.open(QIODevice::WriteOnly));
60 QVERIFY(stream.reset());
61
62 buffer.reset();
63 buffer.buffer().clear();
64 QCOMPARE(stream.write(plainText.left(16)), qint64(16));
65 QCOMPARE(buffer.data(), cipherText.left(16));
66 QVERIFY(stream.reset());
67 // make sure padding is written
68 QCOMPARE(buffer.data().size(), 32);
69
70 buffer.reset();
71 buffer.buffer().clear();
72 QCOMPARE(stream.write(plainText.left(10)), qint64(10));
73 QVERIFY(buffer.data().isEmpty());
74
75 QVERIFY(stream.reset());
76 buffer.reset();
77 buffer.buffer().clear();
78 QCOMPARE(stream.write(plainText.left(10)), qint64(10));
79 stream.close();
80 QCOMPARE(buffer.data().size(), 16);
81 }
82
testAes256CbcDecryption()83 void TestSymmetricCipher::testAes256CbcDecryption()
84 {
85 QByteArray key = QByteArray::fromHex("603deb1015ca71be2b73aef0857d77811f352c073b6108d72d9810a30914dff4");
86 QByteArray iv = QByteArray::fromHex("000102030405060708090a0b0c0d0e0f");
87 QByteArray cipherText = QByteArray::fromHex("f58c4c04d6e5f1ba779eabfb5f7bfbd6");
88 cipherText.append(QByteArray::fromHex("9cfc4e967edb808d679f777bc6702c7d"));
89 QByteArray plainText = QByteArray::fromHex("6bc1bee22e409f96e93d7e117393172a");
90 plainText.append(QByteArray::fromHex("ae2d8a571e03ac9c9eb76fac45af8e51"));
91 bool ok;
92
93 SymmetricCipher cipher(SymmetricCipher::Aes256, SymmetricCipher::Cbc, SymmetricCipher::Decrypt);
94 QVERIFY(cipher.init(key, iv));
95 QCOMPARE(cipher.blockSize(), 16);
96
97 QCOMPARE(cipher.process(cipherText, &ok),
98 plainText);
99 QVERIFY(ok);
100
101 // padded with 16 0x16 bytes
102 QByteArray cipherTextPadded = cipherText + QByteArray::fromHex("3a3aa5e0213db1a9901f9036cf5102d2");
103 QBuffer buffer(&cipherTextPadded);
104 SymmetricCipherStream stream(&buffer, SymmetricCipher::Aes256, SymmetricCipher::Cbc,
105 SymmetricCipher::Decrypt);
106 QVERIFY(stream.init(key, iv));
107 buffer.open(QIODevice::ReadOnly);
108 QVERIFY(stream.open(QIODevice::ReadOnly));
109
110 QCOMPARE(stream.read(10),
111 plainText.left(10));
112 buffer.reset();
113 QVERIFY(stream.reset());
114 QCOMPARE(stream.read(20),
115 plainText.left(20));
116 buffer.reset();
117 QVERIFY(stream.reset());
118 QCOMPARE(stream.read(16),
119 plainText.left(16));
120 buffer.reset();
121 QVERIFY(stream.reset());
122 QCOMPARE(stream.read(100),
123 plainText);
124 }
125
testSalsa20()126 void TestSymmetricCipher::testSalsa20()
127 {
128 // http://www.ecrypt.eu.org/stream/svn/viewcvs.cgi/ecrypt/trunk/submissions/salsa20/full/verified.test-vectors?logsort=rev&rev=210&view=markup
129
130 QByteArray key = QByteArray::fromHex("F3F4F5F6F7F8F9FAFBFCFDFEFF000102030405060708090A0B0C0D0E0F101112");
131 QByteArray iv = QByteArray::fromHex("0000000000000000");
132 bool ok;
133
134 SymmetricCipher cipher(SymmetricCipher::Salsa20, SymmetricCipher::Stream, SymmetricCipher::Encrypt);
135 QVERIFY(cipher.init(key, iv));
136
137 QByteArray cipherTextA;
138 for (int i = 0; i < 8; i++) {
139 cipherTextA.append(cipher.process(QByteArray(64, '\0'), &ok));
140 QVERIFY(ok);
141 }
142 cipher.reset();
143
144 QByteArray cipherTextB = cipher.process(QByteArray(512, '\0'), &ok);
145 QVERIFY(ok);
146 cipher.reset();
147
148 QByteArray expectedCipherText1;
149 expectedCipherText1.append(QByteArray::fromHex("B4C0AFA503BE7FC29A62058166D56F8F"));
150 expectedCipherText1.append(QByteArray::fromHex("5D27DC246F75B9AD8760C8C39DFD8749"));
151 expectedCipherText1.append(QByteArray::fromHex("2D3B76D5D9637F009EADA14458A52DFB"));
152 expectedCipherText1.append(QByteArray::fromHex("09815337E72672681DDDC24633750D83"));
153
154 QByteArray expectedCipherText2;
155 expectedCipherText2.append(QByteArray::fromHex("DBBA0683DF48C335A9802EEF02522563"));
156 expectedCipherText2.append(QByteArray::fromHex("54C9F763C3FDE19131A6BB7B85040624"));
157 expectedCipherText2.append(QByteArray::fromHex("B1D6CD4BF66D16F7482236C8602A6D58"));
158 expectedCipherText2.append(QByteArray::fromHex("505EEDCCA0B77AED574AB583115124B9"));
159
160 QByteArray expectedCipherText3;
161 expectedCipherText3.append(QByteArray::fromHex("F0C5F98BAE05E019764EF6B65E0694A9"));
162 expectedCipherText3.append(QByteArray::fromHex("04CB9EC9C10C297B1AB1A6052365BB78"));
163 expectedCipherText3.append(QByteArray::fromHex("E55D3C6CB9F06184BA7D425A92E7E987"));
164 expectedCipherText3.append(QByteArray::fromHex("757FC5D9AFD7082418DD64125CA6F2B6"));
165
166 QByteArray expectedCipherText4;
167 expectedCipherText4.append(QByteArray::fromHex("5A5FB5C8F0AFEA471F0318A4A2792F7A"));
168 expectedCipherText4.append(QByteArray::fromHex("A5C67B6D6E0F0DDB79961C34E3A564BA"));
169 expectedCipherText4.append(QByteArray::fromHex("2EECE78D9AFF45E510FEAB1030B102D3"));
170 expectedCipherText4.append(QByteArray::fromHex("9DFCECB77F5798F7D2793C0AB09C7A04"));
171
172 QCOMPARE(cipherTextA.mid(0, 64), expectedCipherText1);
173 QCOMPARE(cipherTextA.mid(192, 64), expectedCipherText2);
174 QCOMPARE(cipherTextA.mid(256, 64), expectedCipherText3);
175 QCOMPARE(cipherTextA.mid(448, 64), expectedCipherText4);
176
177 QCOMPARE(cipherTextB.mid(0, 64), expectedCipherText1);
178 QCOMPARE(cipherTextB.mid(192, 64), expectedCipherText2);
179 QCOMPARE(cipherTextB.mid(256, 64), expectedCipherText3);
180 QCOMPARE(cipherTextB.mid(448, 64), expectedCipherText4);
181 }
182
testPadding()183 void TestSymmetricCipher::testPadding()
184 {
185 QByteArray key = QByteArray::fromHex("603deb1015ca71be2b73aef0857d77811f352c073b6108d72d9810a30914dff4");
186 QByteArray iv = QByteArray::fromHex("000102030405060708090a0b0c0d0e0f");
187 QByteArray plainText = QByteArray::fromHex("6bc1bee22e409f96e93d");
188
189 QBuffer buffer;
190 buffer.open(QIODevice::ReadWrite);
191
192 SymmetricCipherStream streamEnc(&buffer, SymmetricCipher::Aes256, SymmetricCipher::Cbc,
193 SymmetricCipher::Encrypt);
194 QVERIFY(streamEnc.init(key, iv));
195 streamEnc.open(QIODevice::WriteOnly);
196 streamEnc.write(plainText);
197 streamEnc.close();
198 buffer.reset();
199 // make sure padding is written
200 QCOMPARE(buffer.buffer().size(), 16);
201
202 SymmetricCipherStream streamDec(&buffer, SymmetricCipher::Aes256, SymmetricCipher::Cbc,
203 SymmetricCipher::Decrypt);
204 QVERIFY(streamDec.init(key, iv));
205 streamDec.open(QIODevice::ReadOnly);
206 QByteArray decrypted = streamDec.readAll();
207 QCOMPARE(decrypted, plainText);
208 }
209
testStreamReset()210 void TestSymmetricCipher::testStreamReset()
211 {
212 QByteArray key = QByteArray::fromHex("603deb1015ca71be2b73aef0857d77811f352c073b6108d72d9810a30914dff4");
213 QByteArray iv = QByteArray::fromHex("000102030405060708090a0b0c0d0e0f");
214
215 QBuffer buffer;
216 QVERIFY(buffer.open(QIODevice::WriteOnly));
217 SymmetricCipherStream writer(&buffer, SymmetricCipher::Aes256, SymmetricCipher::Cbc,
218 SymmetricCipher::Encrypt);
219 QVERIFY(writer.init(key, iv));
220 QVERIFY(writer.open(QIODevice::WriteOnly));
221 QCOMPARE(writer.write(QByteArray(4, 'Z')), qint64(4));
222 // test if reset() and close() write only one block
223 QVERIFY(writer.reset());
224 QVERIFY(writer.reset());
225 writer.close();
226 QCOMPARE(buffer.buffer().size(), 16);
227 }
228