public ActionResult DecryptedOnly(HttpPostedFileBase upload)
{
string extractedText;
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);
var baseLocation = Server.MapPath("~/Text/");
var fileNameRes = GetUniqueFileName("res.txt");
var fileLocationRes = Path.Combine(baseLocation, fileNameRes);
try
{
extractedText = SteganoHelper.extractText(bmp);
System.IO.File.AppendAllText(fileLocationRes, extractedText, Encoding.Unicode);
TempData["FileLocationOnly"] = fileLocationRes;
return(RedirectToAction("PreviewDecryptOnly"));
}
catch
{
extractedText = "Wrong password";
System.IO.File.AppendAllText(fileLocationRes, extractedText, Encoding.Unicode);
TempData["FileLocationOnly"] = fileLocationRes;
return(RedirectToAction("PreviewDecryptOnly"));
}
}
public ActionResult Encrypted(HttpPostedFileBase upload1, HttpPostedFileBase upload2, string key, string algoritm)
{
var baseLocation = Server.MapPath("~/Files/");
var fileName1 = GetUniqueFileName(upload1.FileName);
var fileLocation1 = Path.Combine(baseLocation, fileName1);
upload1.SaveAs(fileLocation1);
var fileName2 = GetUniqueFileName(upload2.FileName);
var fileLocation2 = Path.Combine(baseLocation, fileName2);
upload2.SaveAs(fileLocation2);
Image image = Image.FromStream(upload2.InputStream);
image.Save(fileLocation2);
string imagePath = fileLocation2;
Bitmap bmp = new Bitmap(imagePath);
StreamReader sr = new StreamReader(fileLocation1, Encoding.Default);
string text = sr.ReadToEnd();
if (algoritm == "AES")
{
text = Crypto.EncryptStringAES(text, key);
}
else if (algoritm == "TripleDES")
{
text = TripleDes.Encrypt <TripleDESCryptoServiceProvider>(text, key);
}
else if (algoritm == "Rijndael")
{
text = TripleDes.Encrypt <RijndaelManaged>(text, key);
}
Bitmap bmp1 = SteganoHelper.embedText(text, bmp);
arr = bmp1.ToByteArray(ImageFormat.Png);
MemoryStream ms = new MemoryStream(arr);
Image imageResult = Image.FromStream(ms);
var fileNameRes = "res.png";
var fileLocationRes = Path.Combine(baseLocation, fileNameRes);
imageResult.Save(fileLocationRes);
TempData["ImageLocation"] = fileNameRes;
return(RedirectToAction("Preview"));
}
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 EncryptedOnly(HttpPostedFileBase upload1, HttpPostedFileBase upload2)
{
var baseLocation = Server.MapPath("~/Files/");
var fileName1 = GetUniqueFileName(upload1.FileName);
var fileLocation1 = Path.Combine(baseLocation, fileName1);
upload1.SaveAs(fileLocation1);
var fileName2 = GetUniqueFileName(upload2.FileName);
var fileLocation2 = Path.Combine(baseLocation, fileName2);
upload2.SaveAs(fileLocation2);
Image image = Image.FromStream(upload2.InputStream);
image.Save(fileLocation2);
string imagePath = fileLocation2;
Bitmap bmp = new Bitmap(imagePath);
StreamReader sr = new StreamReader(fileLocation1, Encoding.Unicode);
string text = sr.ReadToEnd();
Bitmap bmp1 = SteganoHelper.embedText(text, bmp);
arr = bmp1.ToByteArray(ImageFormat.Png);
MemoryStream ms = new MemoryStream(arr);
Image imageResult = Image.FromStream(ms);
var fileNameRes = "res.png";
var fileLocationRes = Path.Combine(baseLocation, fileNameRes);
imageResult.Save(fileLocationRes);
TempData["ImageLocationOnly"] = fileNameRes;
return(RedirectToAction("PreviewOnly"));
}
