private void RegisterButton_Click(object sender, RoutedEventArgs e)
{
bool correctInput = GetSelectedValuesFromGUIRegister(out string email, out string password);
if (correctInput)
{
User newUser = UsersManagement.AddUser(email, password);
users.Add(newUser);
RecipentsListBox.ItemsSource = null;
RecipentsListBoxDecryption.ItemsSource = null;
RecipentsListViewRegister.ItemsSource = null;
RecipentsListBox.ItemsSource = users;
RecipentsListBoxDecryption.ItemsSource = users;
RecipentsListViewRegister.ItemsSource = users;
resultTextBlockRegister.Text = "Zostałeś zarejestrowany, dziękujemy ! Tak na prawde nie xd";
}
else
{
resultTextBlockRegister.Text = "błąd rejestracji";
//TODO error message about incorrect input
}
}
private void PrepareAppUsers()
{
users = UsersManagement.GetUsersListFromFile();
//set listbox to display all users (as potential recipents of encrypted data)
RecipentsListBox.ItemsSource = users;
RecipentsListBoxDecryption.ItemsSource = users;
RecipentsListViewRegister.ItemsSource = users;
}
private bool GetSelectedValuesFromGUIRegister(out string email,
out string password)
{
bool readingAllOK = true;
//retrieve email and password
email = TextBoxRegistrationEmail.Text;
if (string.IsNullOrEmpty(email))
{
Console.WriteLine("wrong email");
readingAllOK = false;
}
else
{
try
{
//todo this needs polishing
var addr = new System.Net.Mail.MailAddress(email);
readingAllOK = (addr.Address == email);
}
catch
{
Console.WriteLine("wrong email");
readingAllOK = false;
}
}
password = userPassword.Password;
if (!UsersManagement.PasswordCorrect(password))
{
Console.WriteLine("wrong pswd");
readingAllOK = false;
//todo an explanation 'why' needed
}
return(readingAllOK);
}
public static void DecryptFile(EncryptionObject eo, string filePath, string decodedFileName, User selectedUser)
{
Console.WriteLine("decrypting");
//todo temp
/*string tempEncodedFilePath = "tempEncodedContents";
* XmlHelpers.RetrieveXmlHeaderFromFile(filePath, out string xmlHeaderString, tempEncodedFilePath);
*
* XmlHelpers.ReadDataFromXMLHeader(xmlHeaderString,
* out string algorithm, out string keySize,
* out string blockSize, out string cipherMode,
* out string iv, out Dictionary<string, string> recipents,
* out string fileExtension);
*
*/
//recipents are kept in a dictionary as
//<recipentEmail, encryptedUserSessionKey> pairs
//to decrypt the file we need a session key
//we need to find selectedUser- the user that current user of the app claims to be-
//get their encryptedUserSessionKey
//and decrypt the key using user's private key
//todo maybe set to some noise, so that if foreach doesn't find anything, the decoding will work and produce noise-file
//todo temp
/*string encryptedSessionKeyString ="aaaa";
* foreach(KeyValuePair<string, string> emailKey in recipents)
* {
* if (emailKey.Key.Equals(selectedUser.Email))
* {
* encryptedSessionKeyString = emailKey.Value;
* break;
* }
* }
*
* //decrypt session key using user's private key
* string userPrivateKeyString = UsersManagement.GetUserPrivateKeyFromFile(selectedUser.Email);
*
* byte[] decryptedSessionKeyByte = EncryptionHelper.DecryptSessionKeyFromString(encryptedSessionKeyString, userPrivateKeyString);
*/
//todo temp to remove
string userPrivateKeyString = UsersManagement.GetUserPrivateKeyFromFile(selectedUser.Email);
byte[] decryptedSessionKeyByte = EncryptionHelper.DecryptSessionKeyFromString(eo.encryptedSessionKey, userPrivateKeyString);
Console.WriteLine("private key of " + selectedUser.Email + " is " + userPrivateKeyString);
CipherMode mode = CipherMode.CBC;
EncryptionHelper.AesDecryptToFile(filePath,
decodedFileName + ".txt",
decryptedSessionKeyByte, mode, eo.blockSize,
Convert.FromBase64String(eo.ivString));
//set cipher mode
//todo uncomment
/*CipherMode mode = CipherMode.CBC;
*
* switch (cipherMode)
* {
* case Globals.modeCBC:
* mode = CipherMode.CBC;
* break;
* case Globals.modeCFB:
* mode = CipherMode.CFB;
* break;
* case Globals.modeECB:
* mode = CipherMode.ECB;
* break;
* case Globals.modeOFB:
* mode = CipherMode.OFB;
* break;
*
* }
*
* EncryptionHelper.AesDecryptToFile(tempEncodedFilePath,
* decodedFileName + fileExtension,
* decryptedSessionKeyByte, mode, Int32.Parse(keySize), //not key size, should be block size!
* Convert.FromBase64String(iv));
*/
}
