public void CanEncryptAndDecryptMessage()
{
byte[] encryptedData = provider.Encrypt(plaintext);
byte[] decryptedData = provider.Decrypt(encryptedData);
AssertHelpers.AssertArraysEqual(plaintext, decryptedData);
}
public void TripleDESEncryptAndDecrypt()
{
SymmetricAlgorithmProvider provider = new SymmetricAlgorithmProvider(TripleDESCryptoServiceProvider.Create(), key);
byte[] plaintext = new byte[] { 5, 4, 3, 2 };
byte[] ciphertext = provider.Encrypt(plaintext);
byte[] plaintext2 = provider.Decrypt(ciphertext);
Assert.IsFalse(CommonUtil.CompareBytes(plaintext, ciphertext));
Assert.IsTrue(CommonUtil.CompareBytes(plaintext, plaintext2));
}
/// <summary>
/// Encripta una cadena de caracteres.-
/// </summary>
/// <param name="val">Cadena a encriptar</param>
/// <returns>Cadena encriptada</returns>
public string Encrypt(string val)
{
CreateSymmetricAlgorithmProvider();
byte[] decryptedBin = Encoding.UTF8.GetBytes(val);
try
{
return(Convert.ToBase64String(_SymmetricAlgorithmProvider.Encrypt(decryptedBin)));
}
catch (CryptographicException e)
{
TechnicalException te = new TechnicalException("Clave de encriptacion no es la correcta ");
ExceptionHelper.SetTechnicalException <SymetriCypher <T> >(te);
te.ErrorId = "4402";
throw te;
}
}
public void AESEncryptAndDecryptWithBadKey()
{
SymmetricAlgorithmProvider provider = new SymmetricAlgorithmProvider(key);
byte[] plaintext = new byte[] { 5, 4, 6, 2 };
byte[] ciphertext = provider.Encrypt(plaintext);
SymmetricAlgorithmProvider badProvider = new SymmetricAlgorithmProvider(new byte[] { 1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 });
try
{
byte[] plaintext2 = badProvider.Decrypt(ciphertext);
Assert.IsFalse(CommonUtil.CompareBytes(plaintext, plaintext2));
}
catch (CryptographicException)
{
}
}
public static string Encriptar(string texto, out Object keysimetric)
{
string result = "";
try
{
ProtectedKey key = KeyManager.GenerateSymmetricKey("System.Security.Cryptography.TripleDESCryptoServiceProvider", DataProtectionScope.LocalMachine);
SymmetricAlgorithmProvider provider = new SymmetricAlgorithmProvider(typeof(TripleDESCryptoServiceProvider), key);
result = Convert.ToBase64String(provider.Encrypt(UnicodeEncoding.Unicode.GetBytes(texto.ToCharArray(), 0, texto.Length)));
keysimetric = key;
//string decryptedData = UnicodeEncoding.Unicode.GetString(provider.Decrypt(Convert.FromBase64String(result)));
//var crypto = EnterpriseLibraryContainer.Current.GetInstance<CryptographyManager>();
//result = crypto.EncryptSymmetric(GetSymmProvider(), texto);
}
catch (Exception ex)
{
throw ex;
}
return(result);
}
public void EncryptZeroBytes()
{
SymmetricAlgorithmProvider provider = new SymmetricAlgorithmProvider(key);
provider.Encrypt(new byte[0]);
}
public void EncryptNullBytes()
{
SymmetricAlgorithmProvider provider = new SymmetricAlgorithmProvider(key);
provider.Encrypt(null);
}
