public void RijndaelManagedSymmetricEncryptionServiceEncryptDecryptTest()
{
var symmetricService = new RijndaelManagedSymmetricEncryptionService();
var validKey = symmetricService.GenerateSymmetricKey(128);
Assert.AreEqual(true, validKey.Success);
var encryptionArgs = new SymmetricEncryptionArguments
{
BlockSize = 128,
CipherMode = System.Security.Cryptography.CipherMode.CBC,
KeySize = 256,
PaddingMode = System.Security.Cryptography.PaddingMode.ISO10126,
PlainText = "Text to be encoded",
SymmetricPublicKey = validKey.SymmetricKey
};
var encryptionResult = symmetricService.Encrypt(encryptionArgs);
Assert.AreEqual(true, encryptionResult.Success);
var decryptionArgs = new SymmetricDecryptionArguments
{
BlockSize = encryptionArgs.BlockSize,
CipherMode = encryptionArgs.CipherMode,
CipherTextBase64Encoded = encryptionResult.CipherText,
InitialisationVectorBase64Encoded = encryptionResult.InitialisationVector,
KeySize = encryptionArgs.KeySize,
PaddingMode = encryptionArgs.PaddingMode,
SymmetricPublicKey = validKey.SymmetricKey
};
var decryptionResult = symmetricService.Decrypt(decryptionArgs);
Assert.AreEqual(true, decryptionResult.Success);
}
public CipherTextDecryptionResult Decrypt(SymmetricDecryptionArguments arguments)
{
var res = new CipherTextDecryptionResult();
try
{
var cipher = CreateCipher(arguments);
cipher.IV = Convert.FromBase64String(arguments.InitialisationVectorBase64Encoded);
ICryptoTransform cryptTransform = cipher.CreateDecryptor();
byte[] cipherTextBytes = Convert.FromBase64String(arguments.CipherTextBase64Encoded);
byte[] plainText = cryptTransform.TransformFinalBlock(cipherTextBytes, 0, cipherTextBytes.Length);
res.DecodedText = Encoding.UTF8.GetString(plainText);
res.Success = true;
}
catch (Exception ex)
{
res.ExceptionMessage = ex.Message;
}
return res;
}
public CipherTextDecryptionResult Decrypt(SymmetricDecryptionArguments arguments)
{
var res = new CipherTextDecryptionResult();
try
{
var cipher = CreateCipher(arguments);
cipher.IV = Convert.FromBase64String(arguments.InitialisationVectorBase64Encoded);
ICryptoTransform cryptTransform = cipher.CreateDecryptor();
byte[] cipherTextBytes = Convert.FromBase64String(arguments.CipherTextBase64Encoded);
byte[] plainText = cryptTransform.TransformFinalBlock(cipherTextBytes, 0, cipherTextBytes.Length);
res.DecodedText = Encoding.UTF8.GetString(plainText);
res.Success = true;
}
catch (Exception ex)
{
res.ExceptionMessage = ex.Message;
}
return(res);
}
