public void EncryptDecrypt_ShouldRoundTrip()
{
var input = new byte[] { 0, 1, 5, 30, 244, 255, 193 };
var rsa = new RSACipher(new DefaultRandomGenerator());
rsa.Init(new RSAPrivateKeyParameter(Key));
var encryptOutput = new byte[rsa.KeySize];
var decryptOutput = new byte[input.Length];
rsa.Encrypt(input, 0, encryptOutput, 0, input.Length);
rsa.Decrypt(encryptOutput, 0, decryptOutput, 0, encryptOutput.Length);
Assert.Equal(input, decryptOutput);
}
private byte[] ReadMessage(byte[] body)
{
if (_certificateConfig.Certificate is null)
{
throw new InvalidOperationException("Certificate is not initialized");
}
var length = EndianBitConverter.Big.ToUInt16(body, 0);
SecurityAssert.Assert(body.Length == length + 2);
var key = (RSAPrivateKey)_certificateManager.GetPrivateKey(_certificateConfig.Certificate.SubjectPublicKey);
var rsa = new RSACipher(_random);
rsa.Init(new RSAPrivateKeyParameter(key));
var preMasterSecret = new byte[48];
rsa.Decrypt(body, 2, preMasterSecret, 0, length);
SecurityAssert.Assert(preMasterSecret[0] == _versionConfig.Version.Major);
SecurityAssert.Assert(preMasterSecret[1] == _versionConfig.Version.Minor);
return(preMasterSecret);
}