public void TestArgumentExceptions()
{
using (var rc4 = new RC4()) {
var buffer = new byte[16];
Assert.AreEqual(1, rc4.InputBlockSize, "InputBlockSize");
Assert.AreEqual(1, rc4.OutputBlockSize, "OutputBlockSize");
Assert.IsFalse(rc4.CanReuseTransform, "CanReuseTransform");
Assert.IsTrue(rc4.CanTransformMultipleBlocks, "CanTransformMultipleBlocks");
Assert.Throws <InvalidOperationException> (() => { var x = rc4.Key; });
Assert.Throws <ArgumentNullException> (() => { rc4.Key = null; });
Assert.Throws <ArgumentException> (() => { rc4.Key = new byte[0]; });
rc4.GenerateIV();
rc4.GenerateKey();
rc4.CreateDecryptor();
rc4.CreateEncryptor();
// TransformBlock input buffer parameters
Assert.Throws <ArgumentNullException> (() => rc4.TransformBlock(null, 0, buffer.Length, buffer, 0));
Assert.Throws <ArgumentOutOfRangeException> (() => rc4.TransformBlock(buffer, -1, buffer.Length, buffer, 0));
Assert.Throws <ArgumentOutOfRangeException> (() => rc4.TransformBlock(buffer, 0, -1, buffer, 0));
// TransformBlock output buffer parameters
Assert.Throws <ArgumentNullException> (() => rc4.TransformBlock(buffer, 0, buffer.Length, null, 0));
Assert.Throws <ArgumentOutOfRangeException> (() => rc4.TransformBlock(buffer, 0, buffer.Length, buffer, -1));
// TransformFinalBlock
Assert.Throws <ArgumentNullException> (() => rc4.TransformFinalBlock(null, 0, buffer.Length));
Assert.Throws <ArgumentOutOfRangeException> (() => rc4.TransformFinalBlock(buffer, -1, buffer.Length));
Assert.Throws <ArgumentOutOfRangeException> (() => rc4.TransformFinalBlock(buffer, 0, -1));
}
}
public Crypt(int keySize)
{
RC4 = new RC4 {
KeySize = keySize
};
RC4.GenerateKey();
}
public EncryptContext(int keySize)
{
RC4 = new RC4 {
KeySize = keySize
};
RC4.GenerateKey();
}
public Crypt(int keySize, int fastKeySize)
{
if (keySize == 0)
{
AES = new RijndaelManaged
{
BlockSize = s_defaultKey.Length * 8,
KeySize = s_defaultKey.Length * 8,
Padding = PaddingMode.None,
Mode = CipherMode.ECB,
Key = s_defaultKey
};
}
else
{
AES = new RijndaelManaged
{
BlockSize = keySize,
KeySize = keySize,
Padding = PaddingMode.None,
Mode = CipherMode.ECB
};
AES.GenerateKey();
}
if (fastKeySize == 0)
{
RC4 = new RC4
{
KeySize = s_defaultKey.Length * 8,
Key = s_defaultKey
};
}
else
{
RC4 = new RC4 {
KeySize = fastKeySize
};
RC4.GenerateKey();
}
}
