private XmlNode EncryptDecrypt(bool encrypt, XmlNode node)
{
string data;
using (var tripleDes = new TripleDes(_secret))
{
data = encrypt
? tripleDes.Encrypt(node.OuterXml)
: tripleDes.Decrypt(node.InnerText);
}
var xmlDoc = new XmlDocument
{
PreserveWhitespace = true
};
string value = data;
if (encrypt)
{
const string encryptedDataTag = "EncryptedData";
value = string.Format(CultureInfo.InvariantCulture, Constants.XmlTag, encryptedDataTag, data);
}
xmlDoc.LoadXml(value);
// ReSharper disable once AssignNullToNotNullAttribute
return(xmlDoc.DocumentElement);
}
public string DecryptTest([PexAssumeUnderTest] TripleDes target, string encryptedValue)
{
string result = target.Decrypt(encryptedValue);
return(result);
// TODO: add assertions to method TripleDesTest.DecryptTest(TripleDes, String)
}
public void Open()
{
if (sqlConnection == null)
{
sqlConnection = new SqlConnection(TripleDes.Decrypt(CommonObjects.GetConnectionString()));
sqlConnection.Open();
sqlTransaction = sqlConnection.BeginTransaction();
}
}
public void TestEncryptString()
{
var encryptor = new TripleDes();
string raw = "Đây là Unicode string", key = "password", salt = "this_is_salt";
byte[] encrypted; byte[] decrypted;
// without salt
encrypted = encryptor.Encrypt(raw, key);
Assert.NotNull(encrypted);
decrypted = encryptor.Decrypt(encrypted, key);
Assert.NotNull(decrypted);
Assert.Equal(raw, decrypted.GetString());
// with salt
encrypted = encryptor.Encrypt(raw, key, salt);
Assert.NotNull(encrypted);
decrypted = encryptor.Decrypt(encrypted, key);
Assert.NotNull(decrypted);
Assert.Equal(raw, decrypted.GetString());
}
public void EncryptDescryptTest()
{
// Arrange
var tripleDes = new TripleDes();
string expectedValue = MethodBase.GetCurrentMethod()
.Name;
// Act
string value = tripleDes.Encrypt(expectedValue);
string actualValue = tripleDes.Decrypt(value);
// Assert
Assert.AreEqual(expectedValue, actualValue);
Assert.AreNotEqual(expectedValue, value);
}
public ActionResult Decrypted(HttpPostedFileBase upload, string key, string algoritm)
{
string fileName = GetUniqueFileName(upload.FileName);
Image image = Image.FromStream(upload.InputStream);
image.Save(Server.MapPath("~/Files/" + fileName));
string imagePath = Server.MapPath("~/Files/" + fileName);
Bitmap bmp = new Bitmap(imagePath);
string extractedText = SteganoHelper.extractText(bmp);
var baseLocation = Server.MapPath("~/Text/");
var fileNameRes = GetUniqueFileName("res.txt");
var fileLocationRes = Path.Combine(baseLocation, fileNameRes);
try
{
if (algoritm == "AES")
{
extractedText = Crypto.DecryptStringAES(extractedText, key) + Environment.NewLine;
}
else if (algoritm == "TripleDES")
{
extractedText = TripleDes.Decrypt <TripleDESCryptoServiceProvider>(extractedText, key) + Environment.NewLine;
}
else if (algoritm == "Rijndael")
{
extractedText = TripleDes.Decrypt <RijndaelManaged>(extractedText, key) + Environment.NewLine;
}
System.IO.File.AppendAllText(fileLocationRes, extractedText, Encoding.Default);
TempData["FileLocation"] = fileLocationRes;
return(RedirectToAction("PreviewDecrypt"));
}
catch
{
extractedText = "Wrong password";
System.IO.File.AppendAllText(fileLocationRes, extractedText, Encoding.Default);
TempData["FileLocation"] = fileLocationRes;
return(RedirectToAction("PreviewDecrypt"));
}
}
public ActionResult CryptoDecrypted(HttpPostedFileBase upload, string key, string algoritm)
{
var baseLocation = Server.MapPath("~/Text/");
var fileName1 = GetUniqueFileName(upload.FileName);
var fileLocation1 = Path.Combine(baseLocation, fileName1);
upload.SaveAs(fileLocation1);
StreamReader sr = new StreamReader(fileLocation1, Encoding.Default);
string extractedText = sr.ReadToEnd();
var fileNameRes = GetUniqueFileName("res.txt");
var fileLocationRes = Path.Combine(baseLocation, fileNameRes);
try
{
if (algoritm == "AES")
{
extractedText = Crypto.DecryptStringAES(extractedText, key) + Environment.NewLine;
}
else if (algoritm == "TripleDES")
{
extractedText = TripleDes.Decrypt <TripleDESCryptoServiceProvider>(extractedText, key) + Environment.NewLine;
}
else if (algoritm == "Rijndael")
{
extractedText = TripleDes.Decrypt <RijndaelManaged>(extractedText, key) + Environment.NewLine;
}
System.IO.File.AppendAllText(fileLocationRes, extractedText, Encoding.Default);
TempData["FileLocationCrypto"] = fileLocationRes;
return(RedirectToAction("PreviewCryptoDecrypt"));
}
catch
{
extractedText = "Wrong password";
System.IO.File.AppendAllText(fileLocationRes, extractedText, Encoding.Default);
TempData["FileLocationCrypto"] = fileLocationRes;
return(RedirectToAction("PreviewCryptoDecrypt"));
}
}
