internal static CipherBlock ClientCipher(RSACryptoServiceProvider publicKey)
{
var aes = new AesCryptoServiceProvider {Padding = PaddingMode.Zeros};
return new CipherBlock(aes, new RSAOAEPKeyExchangeFormatter(publicKey).CreateKeyExchange(aes.Key, typeof(Aes)), publicKey.PublicKey_Hash());
}