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TestSymmetricCipher.cpp
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/*
* Copyright (C) 2010 Felix Geyer <[email protected]>
* Copyright (C) 2017 KeePassXC Team <[email protected]>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 or (at your option)
* version 3 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "TestSymmetricCipher.h"
#include "TestGlobal.h"
#include <QBuffer>
#include "crypto/Crypto.h"
#include "crypto/SymmetricCipher.h"
#include "streams/SymmetricCipherStream.h"
QTEST_GUILESS_MAIN(TestSymmetricCipher)
void TestSymmetricCipher::initTestCase()
{
QVERIFY(Crypto::init());
}
void TestSymmetricCipher::testAes128CbcEncryption()
{
// http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-38a.pdf
QByteArray key = QByteArray::fromHex("2b7e151628aed2a6abf7158809cf4f3c");
QByteArray iv = QByteArray::fromHex("000102030405060708090a0b0c0d0e0f");
QByteArray plainText = QByteArray::fromHex("6bc1bee22e409f96e93d7e117393172a");
plainText.append(QByteArray::fromHex("ae2d8a571e03ac9c9eb76fac45af8e51"));
QByteArray cipherText = QByteArray::fromHex("7649abac8119b246cee98e9b12e9197d");
cipherText.append(QByteArray::fromHex("5086cb9b507219ee95db113a917678b2"));
bool ok;
SymmetricCipher cipher(SymmetricCipher::Aes128, SymmetricCipher::Cbc, SymmetricCipher::Encrypt);
QVERIFY(cipher.init(key, iv));
QCOMPARE(cipher.blockSize(), 16);
QCOMPARE(cipher.process(plainText, &ok), cipherText);
QVERIFY(ok);
QBuffer buffer;
SymmetricCipherStream stream(&buffer, SymmetricCipher::Aes128, SymmetricCipher::Cbc,
SymmetricCipher::Encrypt);
QVERIFY(stream.init(key, iv));
buffer.open(QIODevice::WriteOnly);
QVERIFY(stream.open(QIODevice::WriteOnly));
QVERIFY(stream.reset());
buffer.reset();
buffer.buffer().clear();
QCOMPARE(stream.write(plainText.left(16)), qint64(16));
QCOMPARE(buffer.data(), cipherText.left(16));
QVERIFY(stream.reset());
// make sure padding is written
QCOMPARE(buffer.data().size(), 32);
buffer.reset();
buffer.buffer().clear();
QCOMPARE(stream.write(plainText.left(10)), qint64(10));
QVERIFY(buffer.data().isEmpty());
QVERIFY(stream.reset());
buffer.reset();
buffer.buffer().clear();
QCOMPARE(stream.write(plainText.left(10)), qint64(10));
stream.close();
QCOMPARE(buffer.data().size(), 16);
}
void TestSymmetricCipher::testAes128CbcDecryption()
{
QByteArray key = QByteArray::fromHex("2b7e151628aed2a6abf7158809cf4f3c");
QByteArray iv = QByteArray::fromHex("000102030405060708090a0b0c0d0e0f");
QByteArray cipherText = QByteArray::fromHex("7649abac8119b246cee98e9b12e9197d");
cipherText.append(QByteArray::fromHex("5086cb9b507219ee95db113a917678b2"));
QByteArray plainText = QByteArray::fromHex("6bc1bee22e409f96e93d7e117393172a");
plainText.append(QByteArray::fromHex("ae2d8a571e03ac9c9eb76fac45af8e51"));
bool ok;
SymmetricCipher cipher(SymmetricCipher::Aes128, SymmetricCipher::Cbc, SymmetricCipher::Decrypt);
QVERIFY(cipher.init(key, iv));
QCOMPARE(cipher.blockSize(), 16);
QCOMPARE(cipher.process(cipherText, &ok), plainText);
QVERIFY(ok);
// padded with 16 0x10 bytes
QByteArray cipherTextPadded = cipherText + QByteArray::fromHex("55e21d7100b988ffec32feeafaf23538");
QBuffer buffer(&cipherTextPadded);
SymmetricCipherStream stream(&buffer, SymmetricCipher::Aes128, SymmetricCipher::Cbc,
SymmetricCipher::Decrypt);
QVERIFY(stream.init(key, iv));
buffer.open(QIODevice::ReadOnly);
QVERIFY(stream.open(QIODevice::ReadOnly));
QCOMPARE(stream.read(10), plainText.left(10));
buffer.reset();
QVERIFY(stream.reset());
QCOMPARE(stream.read(20), plainText.left(20));
buffer.reset();
QVERIFY(stream.reset());
QCOMPARE(stream.read(16), plainText.left(16));
buffer.reset();
QVERIFY(stream.reset());
QCOMPARE(stream.read(100), plainText);
}
void TestSymmetricCipher::testAes256CbcEncryption()
{
// http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-38a.pdf
QByteArray key = QByteArray::fromHex("603deb1015ca71be2b73aef0857d77811f352c073b6108d72d9810a30914dff4");
QByteArray iv = QByteArray::fromHex("000102030405060708090a0b0c0d0e0f");
QByteArray plainText = QByteArray::fromHex("6bc1bee22e409f96e93d7e117393172a");
plainText.append(QByteArray::fromHex("ae2d8a571e03ac9c9eb76fac45af8e51"));
QByteArray cipherText = QByteArray::fromHex("f58c4c04d6e5f1ba779eabfb5f7bfbd6");
cipherText.append(QByteArray::fromHex("9cfc4e967edb808d679f777bc6702c7d"));
bool ok;
SymmetricCipher cipher(SymmetricCipher::Aes256, SymmetricCipher::Cbc, SymmetricCipher::Encrypt);
QVERIFY(cipher.init(key, iv));
QCOMPARE(cipher.blockSize(), 16);
QCOMPARE(cipher.process(plainText, &ok),
cipherText);
QVERIFY(ok);
QBuffer buffer;
SymmetricCipherStream stream(&buffer, SymmetricCipher::Aes256, SymmetricCipher::Cbc,
SymmetricCipher::Encrypt);
QVERIFY(stream.init(key, iv));
buffer.open(QIODevice::WriteOnly);
QVERIFY(stream.open(QIODevice::WriteOnly));
QVERIFY(stream.reset());
buffer.reset();
buffer.buffer().clear();
QCOMPARE(stream.write(plainText.left(16)), qint64(16));
QCOMPARE(buffer.data(), cipherText.left(16));
QVERIFY(stream.reset());
// make sure padding is written
QCOMPARE(buffer.data().size(), 32);
buffer.reset();
buffer.buffer().clear();
QCOMPARE(stream.write(plainText.left(10)), qint64(10));
QVERIFY(buffer.data().isEmpty());
QVERIFY(stream.reset());
buffer.reset();
buffer.buffer().clear();
QCOMPARE(stream.write(plainText.left(10)), qint64(10));
stream.close();
QCOMPARE(buffer.data().size(), 16);
}
void TestSymmetricCipher::testAes256CbcDecryption()
{
QByteArray key = QByteArray::fromHex("603deb1015ca71be2b73aef0857d77811f352c073b6108d72d9810a30914dff4");
QByteArray iv = QByteArray::fromHex("000102030405060708090a0b0c0d0e0f");
QByteArray cipherText = QByteArray::fromHex("f58c4c04d6e5f1ba779eabfb5f7bfbd6");
cipherText.append(QByteArray::fromHex("9cfc4e967edb808d679f777bc6702c7d"));
QByteArray plainText = QByteArray::fromHex("6bc1bee22e409f96e93d7e117393172a");
plainText.append(QByteArray::fromHex("ae2d8a571e03ac9c9eb76fac45af8e51"));
bool ok;
SymmetricCipher cipher(SymmetricCipher::Aes256, SymmetricCipher::Cbc, SymmetricCipher::Decrypt);
QVERIFY(cipher.init(key, iv));
QCOMPARE(cipher.blockSize(), 16);
QCOMPARE(cipher.process(cipherText, &ok),
plainText);
QVERIFY(ok);
// padded with 16 0x16 bytes
QByteArray cipherTextPadded = cipherText + QByteArray::fromHex("3a3aa5e0213db1a9901f9036cf5102d2");
QBuffer buffer(&cipherTextPadded);
SymmetricCipherStream stream(&buffer, SymmetricCipher::Aes256, SymmetricCipher::Cbc,
SymmetricCipher::Decrypt);
QVERIFY(stream.init(key, iv));
buffer.open(QIODevice::ReadOnly);
QVERIFY(stream.open(QIODevice::ReadOnly));
QCOMPARE(stream.read(10),
plainText.left(10));
buffer.reset();
QVERIFY(stream.reset());
QCOMPARE(stream.read(20),
plainText.left(20));
buffer.reset();
QVERIFY(stream.reset());
QCOMPARE(stream.read(16),
plainText.left(16));
buffer.reset();
QVERIFY(stream.reset());
QCOMPARE(stream.read(100),
plainText);
}
void TestSymmetricCipher::testAes256CtrEncryption()
{
// http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-38a.pdf
QByteArray key = QByteArray::fromHex("603deb1015ca71be2b73aef0857d77811f352c073b6108d72d9810a30914dff4");
QByteArray ctr = QByteArray::fromHex("f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff");
QByteArray plainText = QByteArray::fromHex("6bc1bee22e409f96e93d7e117393172a");
plainText.append(QByteArray::fromHex("ae2d8a571e03ac9c9eb76fac45af8e51"));
QByteArray cipherText = QByteArray::fromHex("601ec313775789a5b7a7f504bbf3d228");
cipherText.append(QByteArray::fromHex("f443e3ca4d62b59aca84e990cacaf5c5"));
bool ok;
SymmetricCipher cipher(SymmetricCipher::Aes256, SymmetricCipher::Ctr, SymmetricCipher::Encrypt);
QVERIFY(cipher.init(key, ctr));
QCOMPARE(cipher.blockSize(), 16);
QCOMPARE(cipher.process(plainText, &ok),
cipherText);
QVERIFY(ok);
}
void TestSymmetricCipher::testAes256CtrDecryption()
{
QByteArray key = QByteArray::fromHex("603deb1015ca71be2b73aef0857d77811f352c073b6108d72d9810a30914dff4");
QByteArray ctr = QByteArray::fromHex("f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff");
QByteArray cipherText = QByteArray::fromHex("601ec313775789a5b7a7f504bbf3d228");
cipherText.append(QByteArray::fromHex("f443e3ca4d62b59aca84e990cacaf5c5"));
QByteArray plainText = QByteArray::fromHex("6bc1bee22e409f96e93d7e117393172a");
plainText.append(QByteArray::fromHex("ae2d8a571e03ac9c9eb76fac45af8e51"));
bool ok;
SymmetricCipher cipher(SymmetricCipher::Aes256, SymmetricCipher::Ctr, SymmetricCipher::Decrypt);
QVERIFY(cipher.init(key, ctr));
QCOMPARE(cipher.blockSize(), 16);
QCOMPARE(cipher.process(cipherText, &ok),
plainText);
QVERIFY(ok);
}
void TestSymmetricCipher::testTwofish256CbcEncryption()
{
// NIST MCT Known-Answer Tests (cbc_e_m.txt)
// https://www.schneier.com/code/twofish-kat.zip
QVector<QByteArray> keys {
QByteArray::fromHex("0000000000000000000000000000000000000000000000000000000000000000"),
QByteArray::fromHex("D0A260EB41755B19374BABF259A79DB3EA7162E65490B03B1AE4871FB35EF23B"),
QByteArray::fromHex("8D55E4849A4DED08D89881E6708EDD26BEEE942073DFB3790B2798B240ACD74A"),
QByteArray::fromHex("606EFDC2066A837AF0430EBE4CF1F21071CCB236C33B4B9D82404FDB05C74621"),
QByteArray::fromHex("B119AA9485CEEEB4CC778AF21121E54DE4BDBA3498C61C8FD9004AA0C71909C3")
};
QVector<QByteArray> ivs {
QByteArray::fromHex("00000000000000000000000000000000"),
QByteArray::fromHex("EA7162E65490B03B1AE4871FB35EF23B"),
QByteArray::fromHex("549FF6C6274F034211C31FADF3F22571"),
QByteArray::fromHex("CF222616B0E4F8E48967D769456B916B"),
QByteArray::fromHex("957108025BFD57125B40057BC2DE4FE2")
};
QVector<QByteArray> plainTexts {
QByteArray::fromHex("00000000000000000000000000000000"),
QByteArray::fromHex("D0A260EB41755B19374BABF259A79DB3"),
QByteArray::fromHex("5DF7846FDB38B611EFD32A1429294095"),
QByteArray::fromHex("ED3B19469C276E7228DB8F583C7F2F36"),
QByteArray::fromHex("D177575683A46DCE3C34844C5DD0175D")
};
QVector<QByteArray> cipherTexts {
QByteArray::fromHex("EA7162E65490B03B1AE4871FB35EF23B"),
QByteArray::fromHex("549FF6C6274F034211C31FADF3F22571"),
QByteArray::fromHex("CF222616B0E4F8E48967D769456B916B"),
QByteArray::fromHex("957108025BFD57125B40057BC2DE4FE2"),
QByteArray::fromHex("6F725C5950133F82EF021A94CADC8508")
};
SymmetricCipher cipher(SymmetricCipher::Twofish, SymmetricCipher::Cbc, SymmetricCipher::Encrypt);
bool ok;
for (int i = 0; i < keys.size(); ++i) {
QVERIFY(cipher.init(keys[i], ivs[i]));
QByteArray ptNext = plainTexts[i];
QByteArray ctPrev = ivs[i];
QByteArray ctCur;
QCOMPARE(cipher.blockSize(), 16);
for (int j = 0; j < 5000; ++j) {
ctCur = cipher.process(ptNext, &ok);
if (!ok)
break;
ptNext = ctPrev;
ctPrev = ctCur;
ctCur = cipher.process(ptNext, &ok);
if (!ok)
break;
ptNext = ctPrev;
ctPrev = ctCur;
}
QVERIFY(ok);
QCOMPARE(ctCur, cipherTexts[i]);
}
}
void TestSymmetricCipher::testTwofish256CbcDecryption()
{
// NIST MCT Known-Answer Tests (cbc_d_m.txt)
// https://www.schneier.com/code/twofish-kat.zip
QVector<QByteArray> keys {
QByteArray::fromHex("0000000000000000000000000000000000000000000000000000000000000000"),
QByteArray::fromHex("1B1FE8F5A911CD4C0D800EDCE8ED0A942CBA6271A1044F90C30BA8FE91E1C163"),
QByteArray::fromHex("EBA31FF8D2A24FDD769A937353E23257294A33394E4D17A668060AD8230811A1"),
QByteArray::fromHex("1DCF1915C389AB273F80F897BF008F058ED89F58A95C1BE523C4B11295ED2D0F"),
QByteArray::fromHex("491B9A66D3ED4EF19F02180289D5B1A1C2596AE568540A95DC5244198A9B8869")
};
QVector<QByteArray> ivs {
QByteArray::fromHex("00000000000000000000000000000000"),
QByteArray::fromHex("1B1FE8F5A911CD4C0D800EDCE8ED0A94"),
QByteArray::fromHex("F0BCF70D7BB382917B1A9DAFBB0F38C3"),
QByteArray::fromHex("F66C06ED112BE4FA491A6BE4ECE2BD52"),
QByteArray::fromHex("54D483731064E5D6A082E09536D53EA4")
};
QVector<QByteArray> plainTexts {
QByteArray::fromHex("2CBA6271A1044F90C30BA8FE91E1C163"),
QByteArray::fromHex("05F05148EF495836AB0DA226B2E9D0C2"),
QByteArray::fromHex("A792AC61E7110C434BC2BBCAB6E53CAE"),
QByteArray::fromHex("4C81F5BDC1081170FF96F50B1F76A566"),
QByteArray::fromHex("BD959F5B787037631A37051EA5F369F8")
};
QVector<QByteArray> cipherTexts {
QByteArray::fromHex("00000000000000000000000000000000"),
QByteArray::fromHex("2CBA6271A1044F90C30BA8FE91E1C163"),
QByteArray::fromHex("05F05148EF495836AB0DA226B2E9D0C2"),
QByteArray::fromHex("A792AC61E7110C434BC2BBCAB6E53CAE"),
QByteArray::fromHex("4C81F5BDC1081170FF96F50B1F76A566")
};
SymmetricCipher cipher(SymmetricCipher::Twofish, SymmetricCipher::Cbc, SymmetricCipher::Decrypt);
bool ok;
for (int i = 0; i < keys.size(); ++i) {
cipher.init(keys[i], ivs[i]);
QByteArray ctNext = cipherTexts[i];
QByteArray ptCur;
QCOMPARE(cipher.blockSize(), 16);
for (int j = 0; j < 5000; ++j) {
ptCur = cipher.process(ctNext, &ok);
if (!ok)
break;
ctNext = ptCur;
ptCur = cipher.process(ctNext, &ok);
if (!ok)
break;
ctNext = ptCur;
}
QVERIFY(ok);
QCOMPARE(ptCur, plainTexts[i]);
}
}
void TestSymmetricCipher::testSalsa20()
{
// http://www.ecrypt.eu.org/stream/svn/viewcvs.cgi/ecrypt/trunk/submissions/salsa20/full/verified.test-vectors?logsort=rev&rev=210&view=markup
QByteArray key = QByteArray::fromHex("F3F4F5F6F7F8F9FAFBFCFDFEFF000102030405060708090A0B0C0D0E0F101112");
QByteArray iv = QByteArray::fromHex("0000000000000000");
bool ok;
SymmetricCipher cipher(SymmetricCipher::Salsa20, SymmetricCipher::Stream, SymmetricCipher::Encrypt);
QVERIFY(cipher.init(key, iv));
QByteArray cipherTextA;
for (int i = 0; i < 8; i++) {
cipherTextA.append(cipher.process(QByteArray(64, '\0'), &ok));
QVERIFY(ok);
}
cipher.reset();
QByteArray cipherTextB = cipher.process(QByteArray(512, '\0'), &ok);
QVERIFY(ok);
cipher.reset();
QByteArray expectedCipherText1;
expectedCipherText1.append(QByteArray::fromHex("B4C0AFA503BE7FC29A62058166D56F8F"));
expectedCipherText1.append(QByteArray::fromHex("5D27DC246F75B9AD8760C8C39DFD8749"));
expectedCipherText1.append(QByteArray::fromHex("2D3B76D5D9637F009EADA14458A52DFB"));
expectedCipherText1.append(QByteArray::fromHex("09815337E72672681DDDC24633750D83"));
QByteArray expectedCipherText2;
expectedCipherText2.append(QByteArray::fromHex("DBBA0683DF48C335A9802EEF02522563"));
expectedCipherText2.append(QByteArray::fromHex("54C9F763C3FDE19131A6BB7B85040624"));
expectedCipherText2.append(QByteArray::fromHex("B1D6CD4BF66D16F7482236C8602A6D58"));
expectedCipherText2.append(QByteArray::fromHex("505EEDCCA0B77AED574AB583115124B9"));
QByteArray expectedCipherText3;
expectedCipherText3.append(QByteArray::fromHex("F0C5F98BAE05E019764EF6B65E0694A9"));
expectedCipherText3.append(QByteArray::fromHex("04CB9EC9C10C297B1AB1A6052365BB78"));
expectedCipherText3.append(QByteArray::fromHex("E55D3C6CB9F06184BA7D425A92E7E987"));
expectedCipherText3.append(QByteArray::fromHex("757FC5D9AFD7082418DD64125CA6F2B6"));
QByteArray expectedCipherText4;
expectedCipherText4.append(QByteArray::fromHex("5A5FB5C8F0AFEA471F0318A4A2792F7A"));
expectedCipherText4.append(QByteArray::fromHex("A5C67B6D6E0F0DDB79961C34E3A564BA"));
expectedCipherText4.append(QByteArray::fromHex("2EECE78D9AFF45E510FEAB1030B102D3"));
expectedCipherText4.append(QByteArray::fromHex("9DFCECB77F5798F7D2793C0AB09C7A04"));
QCOMPARE(cipherTextA.mid(0, 64), expectedCipherText1);
QCOMPARE(cipherTextA.mid(192, 64), expectedCipherText2);
QCOMPARE(cipherTextA.mid(256, 64), expectedCipherText3);
QCOMPARE(cipherTextA.mid(448, 64), expectedCipherText4);
QCOMPARE(cipherTextB.mid(0, 64), expectedCipherText1);
QCOMPARE(cipherTextB.mid(192, 64), expectedCipherText2);
QCOMPARE(cipherTextB.mid(256, 64), expectedCipherText3);
QCOMPARE(cipherTextB.mid(448, 64), expectedCipherText4);
}
void TestSymmetricCipher::testChaCha20()
{
// https://tools.ietf.org/html/draft-agl-tls-chacha20poly1305-04#section-7
bool ok;
{
QByteArray key = QByteArray::fromHex("0000000000000000000000000000000000000000000000000000000000000000");
QByteArray iv = QByteArray::fromHex("0000000000000000");
SymmetricCipher cipher(SymmetricCipher::ChaCha20, SymmetricCipher::Stream, SymmetricCipher::Encrypt);
QVERIFY(cipher.init(key, iv));
QCOMPARE(cipher.process(QByteArray(64, 0), &ok),
QByteArray::fromHex(
"76b8e0ada0f13d90405d6ae55386bd28bdd219b8a08ded1aa836efcc8b770dc7da41597c5157488d7724e03fb8d84a376a43b8f41518a11cc387b669b2ee6586"));
QVERIFY(ok);
}
{
QByteArray key = QByteArray::fromHex("0000000000000000000000000000000000000000000000000000000000000001");
QByteArray iv = QByteArray::fromHex("0000000000000000");
SymmetricCipher cipher(SymmetricCipher::ChaCha20, SymmetricCipher::Stream, SymmetricCipher::Encrypt);
QVERIFY(cipher.init(key, iv));
QCOMPARE(cipher.process(QByteArray(64, 0), &ok),
QByteArray::fromHex(
"4540f05a9f1fb296d7736e7b208e3c96eb4fe1834688d2604f450952ed432d41bbe2a0b6ea7566d2a5d1e7e20d42af2c53d792b1c43fea817e9ad275ae546963"));
QVERIFY(ok);
}
{
QByteArray key = QByteArray::fromHex("0000000000000000000000000000000000000000000000000000000000000000");
QByteArray iv = QByteArray::fromHex("0000000000000001");
SymmetricCipher cipher(SymmetricCipher::ChaCha20, SymmetricCipher::Stream, SymmetricCipher::Encrypt);
QVERIFY(cipher.init(key, iv));
QCOMPARE(cipher.process(QByteArray(60, 0), &ok),
QByteArray::fromHex(
"de9cba7bf3d69ef5e786dc63973f653a0b49e015adbff7134fcb7df137821031e85a050278a7084527214f73efc7fa5b5277062eb7a0433e445f41e3"));
QVERIFY(ok);
}
{
QByteArray key = QByteArray::fromHex("0000000000000000000000000000000000000000000000000000000000000000");
QByteArray iv = QByteArray::fromHex("0100000000000000");
SymmetricCipher cipher(SymmetricCipher::ChaCha20, SymmetricCipher::Stream, SymmetricCipher::Encrypt);
QVERIFY(cipher.init(key, iv));
QCOMPARE(cipher.process(QByteArray(64, 0), &ok),
QByteArray::fromHex(
"ef3fdfd6c61578fbf5cf35bd3dd33b8009631634d21e42ac33960bd138e50d32111e4caf237ee53ca8ad6426194a88545ddc497a0b466e7d6bbdb0041b2f586b"));
QVERIFY(ok);
}
}
void TestSymmetricCipher::testPadding()
{
QByteArray key = QByteArray::fromHex("603deb1015ca71be2b73aef0857d77811f352c073b6108d72d9810a30914dff4");
QByteArray iv = QByteArray::fromHex("000102030405060708090a0b0c0d0e0f");
QByteArray plainText = QByteArray::fromHex("6bc1bee22e409f96e93d");
QBuffer buffer;
buffer.open(QIODevice::ReadWrite);
SymmetricCipherStream streamEnc(&buffer, SymmetricCipher::Aes256, SymmetricCipher::Cbc,
SymmetricCipher::Encrypt);
QVERIFY(streamEnc.init(key, iv));
streamEnc.open(QIODevice::WriteOnly);
streamEnc.write(plainText);
streamEnc.close();
buffer.reset();
// make sure padding is written
QCOMPARE(buffer.buffer().size(), 16);
SymmetricCipherStream streamDec(&buffer, SymmetricCipher::Aes256, SymmetricCipher::Cbc,
SymmetricCipher::Decrypt);
QVERIFY(streamDec.init(key, iv));
streamDec.open(QIODevice::ReadOnly);
QByteArray decrypted = streamDec.readAll();
QCOMPARE(decrypted, plainText);
}
void TestSymmetricCipher::testStreamReset()
{
QByteArray key = QByteArray::fromHex("603deb1015ca71be2b73aef0857d77811f352c073b6108d72d9810a30914dff4");
QByteArray iv = QByteArray::fromHex("000102030405060708090a0b0c0d0e0f");
QBuffer buffer;
QVERIFY(buffer.open(QIODevice::WriteOnly));
SymmetricCipherStream writer(&buffer, SymmetricCipher::Aes256, SymmetricCipher::Cbc,
SymmetricCipher::Encrypt);
QVERIFY(writer.init(key, iv));
QVERIFY(writer.open(QIODevice::WriteOnly));
QCOMPARE(writer.write(QByteArray(4, 'Z')), qint64(4));
// test if reset() and close() write only one block
QVERIFY(writer.reset());
QVERIFY(writer.reset());
writer.close();
QCOMPARE(buffer.buffer().size(), 16);
}