private static void Input()
{
// Declare the password that will allow you to retrieve the encrypted data later
var _PASSWORD = "******";
// The String data to conceal on the image
var _DATA_TO_HIDE = "Hello, no one should know that my password is 12345";
// Declare the path where the original image is located
var pathOriginalImage =
@"/Users/surajfehintola/RiderProjects/Steganography/Steganography.ConsoleApplication/img/screen.png";
// Declare the new name of the file that will be generated with the hidden information
var pathResultImage =
@"/Users/surajfehintola/RiderProjects/Steganography/Steganography.ConsoleApplication/img/image_example_with_hidden_information.png";
// Create an instance of the SteganographyHelper
var helper = new SteganographyHelper();
// Encrypt your data to increase security
// Remember: only the encrypted data should be stored on the image
var encryptedData = StringCipher.Encrypt(_DATA_TO_HIDE, _PASSWORD);
// Create an instance of the original image without indexed pixels
var originalImage = SteganographyHelper.CreateNonIndexedImage(Image.FromFile(pathOriginalImage));
// Conceal the encrypted data on the image !
var imageWithHiddenData = SteganographyHelper.MergeText(encryptedData, originalImage);
// Save the image with the hidden information somewhere :)
// In this case the generated file will be image_example_with_hidden_information.png
imageWithHiddenData.Save(pathResultImage);
}
/// <summary>
/// Encrypt the document.
/// </summary>
/// <param name="Doc"></param>
/// <param name="Cancel"></param>
private void HandleDocumentBeforeClose(Document Doc, ref bool Cancel)
{
string sidDocumentIdValue;
if (!Doc.TryGetVariable(Constants.VariableName, out sidDocumentIdValue))
{
return;
}
string isEncryptedStr;
bool isEncrypted = false;
if (Doc.TryGetVariable(Constants.IsEncryptedVariableName, out isEncryptedStr))
{
bool.TryParse(isEncryptedStr, out isEncrypted);
}
if (isEncrypted)
{
return;
}
// Encrypt the content.
var encryptionHelper = new EncryptionHelper();
var encryptedResult = encryptionHelper.Encrypt(Doc, sidDocumentIdValue).Result;
if (!string.IsNullOrWhiteSpace(AuthenticationStore.Instance().IdentityToken))
{
var officeDocumentStore = OfficeDocumentStore.Instance();
officeDocumentStore.StoreDecryption(sidDocumentIdValue, new DecryptedResponse
{
Password = encryptedResult.Password,
Salt = encryptedResult.Salt
});
}
// Insert the image.
var range = Doc.Range();
var image = ResourceHelper.GetImage("WordAccessManagementAddin.Resources.lock.png");
var filePath = Path.GetTempPath() + Guid.NewGuid().ToString() + ".png";
var bm = SteganographyHelper.CreateNonIndexedImage(image);
bm.Save(filePath);
range.Text = string.Empty;
var shape = range.InlineShapes.AddPicture(filePath, false, true);
shape.AlternativeText = encryptedResult.Content;
File.Delete(filePath);
SetEncrypted(Doc, "true");
Doc.Save();
}
private void HandleProtectOffline(object sender, RibbonControlEventArgs e)
{
var document = Globals.ThisAddIn.Application.ActiveDocument;
var range = document.Range();
var xml = range.XML;
var image = ResourceHelper.GetImage("WordAccessManagementAddin.Resources.lock.png");
var filePath = Path.GetTempPath() + Guid.NewGuid().ToString() + ".png";
var bm = SteganographyHelper.CreateNonIndexedImage(image);
bm.Save(filePath);
range.Text = string.Empty;
var shape = range.InlineShapes.AddPicture(filePath, false, true);
shape.AlternativeText = xml;
File.Delete(filePath);
}
public static string Hide2(DataModel data, Image file, string filePath, string _PASSWORD,
string filePathResult)
{
file.Save(filePath, ImageFormat.Png);
// Encrypt your data to increase security
// Remember: only the encrypted data should be stored on the image
var encryptedData = StringCipher.Encrypt(data.Info, _PASSWORD);
// Create an instance of the original image without indexed pixels
var originalImage = SteganographyHelper.CreateNonIndexedImage(file);
// Conceal the encrypted data on the image !
var imageWithHiddenData = SteganographyHelper.MergeText(encryptedData, originalImage);
// Save the image with the hidden information somewhere :)
// In this case the generated file will be image_example_with_hidden_information.png
imageWithHiddenData.Save(filePathResult);
return("");
}
