public void TestEncryptionDecryption()
{
var input = new byte[] { 0, 1, 5, 30, 244, 255, 193 };
var rsa = new RSA();
rsa.Init(new PrivateKeyParameter(Key));
var encrypted = rsa.Encrypt(input);
var decrypted = rsa.Decrypt(encrypted, 0, encrypted.Length);
CollectionAssert.AreEqual(input, decrypted);
}
public void TestSignVerifyInvalid()
{
var input = Encoding.UTF8.GetBytes("Hello World");
var rsa = new RSA();
rsa.Init(new PrivateKeyParameter(Key));
var signature = rsa.Sign(input, new SHA1Digest());
signature[signature.Length - 1] ^= 1;
Assert.IsFalse(rsa.Verify(input, signature, new SHA1Digest()));
}
public void TestSignVerify()
{
var input = Encoding.UTF8.GetBytes("Hello World");
var rsa = new RSA();
rsa.Init(new PrivateKeyParameter(Key));
var signature = rsa.Sign(input, new SHA1Digest());
Assert.IsTrue(rsa.Verify(input, signature, new SHA1Digest()));
Assert.AreEqual("54eab8c1837f4ded1122e1fbf47d0225188148a092e180e83b489aba1f1dc7b5" +
"241103ba8f136b393cf8c054a6a69e0c372453aa098e091a2dbe0310f0b653cb", HexConverter.ToHex(signature));
}
public HandshakeMessage ReadClientKeyExchange(byte[] body)
{
var length = EndianBitConverter.Big.ToUInt16(body, 0);
SecurityAssert.SAssert(body.Length == length + 2);
var key = state.Certificates.GetPrivateKey(state.Certificate.SubjectPublicKey);
var rsa = new RSA();
rsa.Init(new PrivateKeyParameter(key));
var preMasterSecret = rsa.Decrypt(body, 2, length);
SecurityAssert.SAssert(preMasterSecret.Length == 48);
SecurityAssert.SAssert(preMasterSecret[0] == state.Version.Major && preMasterSecret[1] == state.Version.Minor);
return new ClientKeyExchangeMessage.RSA(preMasterSecret);
}