public void Send(MessageProtocols protocol, object obj = null, bool encrypt = true)
{
if (writer == null || writer.BaseStream == null)
{
return;
}
string line = "";
if (obj != null)
{
line = JsonConvert.SerializeObject(obj);
}
if (encrypt && cipher != null)
{
line = NetworkUtil.InsertEscape(cipher.Encrypt(protocol.ToString())) + "," + NetworkUtil.InsertEscape(cipher.Encrypt(line));
}
else
{
line = NetworkUtil.InsertEscape(protocol.ToString()) + "," + NetworkUtil.InsertEscape(line);
}
try
{
writer.WriteLine(line);
writer.Flush();
}
catch (Exception) { }
}
public void HashAndEncrypt(uint hashDigestSize, uint encryptStartOffset, SymmetricCipher theCipher)
{
var digestStart = GetBytePosition();
SetBytePosition(digestStart);
var hash = new SHA256Managed().ComputeHash(Data, 0, (int)digestStart);
Write(hashDigestSize, hash);
theCipher.Encrypt(GetBuffer(), encryptStartOffset, GetBuffer(), encryptStartOffset, GetBytePosition() - encryptStartOffset);
}
public static void TestSymmetricEncrypt1()
{
Console.WriteLine("TestSymmetric1");
var cipher = new SymmetricCipher(SymmetricAlgorithm.Des);
Console.WriteLine($"secretKey:{cipher.Base64SecretKey}");
var encrypted = cipher.Encrypt(Encoding.UTF8.GetBytes("对称加密测试1"));
Console.WriteLine($"encrypted:{Convert.ToBase64String(encrypted)}");
var decrypted = cipher.Decrypt(encrypted);
Console.WriteLine($"decrypted:{Encoding.UTF8.GetString(decrypted)}");
}
public static void TestSymmetricEncrypt2()
{
Console.WriteLine("TestSymmetric2");
var secretKey = Convert.FromBase64String("6V2SlGS25bw=");
var cipher = new SymmetricCipher(SymmetricAlgorithm.Des, secretKey);
var encrypted = cipher.Encrypt(Encoding.UTF8.GetBytes("对称加密测试2"));
Console.WriteLine($"encrypted:{Convert.ToBase64String(encrypted)}");
// encrypted = Convert.FromBase64String("uMi0zTne1HMv5sU1HB2WI/CsNvBUn5y3");
var decrypted = cipher.Decrypt(encrypted);
Console.WriteLine($"decrypted:{Encoding.UTF8.GetString(decrypted)}");
}
/// <summary>
/// Sends a byte array to a remote peer after encrypting it
/// </summary>
public void SendData(byte[] data)
{
data = SymmetricCipher.Encrypt(data);
Connection.SendData(data);
}
public void DecryptToString_EncryptAndDecryptToString_Pass()
{
string plainText = "Encrypt me but don' forget me.";
byte[] plaindata = Encoding.UTF8.GetBytes(plainText);
byte[] encryptedText;
string decryptedText;
using (var cipher = new SymmetricCipher<AesManaged>("passwd", "mysalt1337"))
{
encryptedText = cipher.Encrypt(plaindata);
decryptedText = cipher.DecryptToString(encryptedText);
}
Assert.AreEqual(plainText, decryptedText);
}
public void BasicCipher_TrippleDESSimpleCryption_ShouldPass()
{
string plainText = "Encryption is pretty fun";
byte[] plainTextArr = Encoding.UTF8.GetBytes(plainText);
byte[] encryptArr;
byte[] decryptArr;
byte[] IV;
using (var cipher = new SymmetricCipher<TripleDESCryptoServiceProvider>("mypasswd2", "mysalt1337bb44"))
{
IV = cipher.IV;
encryptArr = cipher.Encrypt(plainText);
}
using (var cipher = new SymmetricCipher<TripleDESCryptoServiceProvider>("mypasswd2", "mysalt1337bb44", IV))
{
decryptArr = cipher.Decrypt(encryptArr);
}
CollectionAssert.AreEqual(plainTextArr, decryptArr);
}
public void BasicCipher_RijndaelSimpleCryption_ShouldPass()
{
string plainText = "Encryption is pretty fun";
string passwd = "mypasswd2";
string salt = "mysalt1337bb44";
byte[] plainTextArr = Encoding.UTF8.GetBytes(plainText);
byte[] encryptArr;
byte[] decryptArr;
byte[] IV;
using (var cipher = new SymmetricCipher<RijndaelManaged>(passwd, salt))
{
IV = cipher.IV;
encryptArr = cipher.Encrypt(plainText);
}
using (var cipher = new SymmetricCipher<RijndaelManaged>(passwd, salt, IV))
{
decryptArr = cipher.Decrypt(encryptArr);
}
CollectionAssert.AreEqual(plainTextArr, decryptArr);
}
public void AesBasicCipher_MultiInstance_WrongSaltFail()
{
string plainText = "Encryption is pretty fun";
byte[] plainTextArr = Encoding.UTF8.GetBytes(plainText);
byte[] encryptArr;
byte[] decryptArr;
using (var cipher = new SymmetricCipher<AesManaged>("mypasswd2", "mysalt1337bb44"))
{
encryptArr = cipher.Encrypt(plainText);
}
using (var cipher = new SymmetricCipher<AesManaged>("mypasswd2", "mysalt1337bb"))
{
decryptArr = cipher.Decrypt(encryptArr);
}
}
public void AesBasicCipher3_SameInstance_ComparesOutput()
{
string plainText = "Encryption is pretty fun";
byte[] plainTextArr = Encoding.UTF8.GetBytes(plainText);
byte[] encryptArr;
byte[] decryptArr;
string decryptStr;
using (var cipher = new SymmetricCipher<AesManaged>("mypasswd2", "mysalt1337bb"))
{
encryptArr = cipher.Encrypt(plainText);
decryptArr = cipher.Decrypt(encryptArr);
}
decryptStr = Encoding.UTF8.GetString(decryptArr);
Assert.AreEqual(plainText, decryptStr);
}
