public static void TestEncrypt()
{
ICrypto crypto = new V2AesCrypto(new SymmetricKey(testKey), new SymmetricIV(testPlaintext), 0);
byte[] zeroPlain = new byte[testCipertext.Length];
byte[] cipherText = crypto.Encrypt(zeroPlain);
Assert.That(cipherText.IsEquivalentTo(testCipertext));
}
public static void TestEncryptPartialBlock()
{
ICrypto crypto = new V2AesCrypto(new SymmetricKey(testKey), new SymmetricIV(testPlaintext), 3);
byte[] zeroPlain = new byte[5];
byte[] cipherText = crypto.Encrypt(zeroPlain);
byte[] partOfTestCipherText = new byte[5];
Array.Copy(testCipertext, 3, partOfTestCipherText, 0, 5);
Assert.That(cipherText.IsEquivalentTo(partOfTestCipherText));
}
public static void TestExtensions_DecryptToBadArgumentsCausingEarlyException(CryptoImplementation cryptoImplementation)
{
SetupAssembly.AssemblySetupCrypto(cryptoImplementation);
Stream nullStream = null;
ICryptoTransform nullEncryptor = null;
ICryptoTransform encryptor = new V2AesCrypto(SymmetricKey.Zero256, SymmetricIV.Zero128, 0).DecryptingTransform();
Assert.Throws <ArgumentNullException>(() => nullStream.DecryptTo(Stream.Null, encryptor, true));
Assert.Throws <ArgumentNullException>(() => Stream.Null.DecryptTo(nullStream, encryptor, true));
Assert.Throws <ArgumentNullException>(() => Stream.Null.DecryptTo(Stream.Null, nullEncryptor, true));
}
public static void TestConstructorWithBadArguments()
{
SymmetricKey nullKey = null;
SymmetricKey testKey = new SymmetricKey(128);
SymmetricIV testIV = new SymmetricIV(128);
ICrypto crypto = null;
Assert.Throws <ArgumentNullException>(() => crypto = new V2AesCrypto(nullKey, testIV, 0));
testKey = new SymmetricKey(64);
Assert.Throws <ArgumentException>(() => crypto = new V2AesCrypto(testKey, testIV, 0));
testKey = new SymmetricKey(256);
testIV = new SymmetricIV(64);
Assert.Throws <ArgumentException>(() => crypto = new V2AesCrypto(testKey, testIV, 0));
testIV = new SymmetricIV(128);
Assert.DoesNotThrow(() => crypto = new V2AesCrypto(testKey, testIV, 0));
Assert.That(crypto, Is.Not.Null);
}
public static void TestEncryptSeveralBlocks()
{
byte[] iv = new byte[16];
Array.Copy(nistInitCounter, iv, 8);
long blockCounter = nistInitCounter.GetBigEndianValue(8, 8);
ICrypto crypto;
crypto = new V2AesCrypto(new SymmetricKey(nistKey), new SymmetricIV(iv), blockCounter << 4);
byte[] cipherText1 = crypto.Encrypt(nistPlaintext1);
Assert.That(cipherText1.IsEquivalentTo(nistCiphertext1));
crypto = new V2AesCrypto(new SymmetricKey(nistKey), new SymmetricIV(iv), (++blockCounter) << 4);
byte[] cipherText2 = crypto.Encrypt(nistPlaintext2);
Assert.That(cipherText2.IsEquivalentTo(nistCiphertext2));
crypto = new V2AesCrypto(new SymmetricKey(nistKey), new SymmetricIV(iv), (++blockCounter) << 4);
byte[] cipherText3 = crypto.Encrypt(nistPlaintext3);
Assert.That(cipherText3.IsEquivalentTo(nistCiphertext3));
crypto = new V2AesCrypto(new SymmetricKey(nistKey), new SymmetricIV(iv), (++blockCounter) << 4);
byte[] cipherText4 = crypto.Encrypt(nistPlaintext4);
Assert.That(cipherText4.IsEquivalentTo(nistCiphertext4));
}
