// Specify user pasword and initialize relative data structure.
public static bool Initialize(string userPass, bool saveUserPass)
{
// Clear saved old data
ApplicationData.Current.LocalSettings.Values.Clear();
// Create new master password string
Random r = new Random();
StringBuilder masterPass = new StringBuilder();
for (int i = 0; i < 64; i++)
{
char c = (char)(r.Next(1, 254) * 8 + r.Next(1, 254));
masterPass.Append(c);
}
string masterPassStr = masterPass.ToString();
// Save master password string
ApplicationData.Current.LocalSettings.Values[MASTERPASS_KEYNAME] =
Crypt.Base64Encoding(Crypt.CipherEncryption(masterPassStr, userPass, false));
// if user password saving is specified, encrypt user password by fixed string
if (saveUserPass)
{
SaveUserPassword(userPass);
}
// Create empty current file.
PasswordFile pf = new PasswordFile();
return(Save(masterPassStr, pf.BuildStringForOutput(false)));
}
/// <summary>
/// Export password file button is clicked.
/// </summary>
private async void ExportPasswordFileButton_Click(object sender, RoutedEventArgs e)
{
_ = sender;
_ = e;
// Load selected password file. If not selected ignore this event
var r = await LoadSelectedPasswordFile().ConfigureAwait(true);
PasswordFile pwfile = r.Item1;
string password = r.Item2;
if (string.IsNullOrEmpty(password) || null == pwfile)
{
return;
}
// Get output path name of a new plain text file
FileSavePicker p = new FileSavePicker();
p.FileTypeChoices.Add(GlbFunc.GetResourceString("TextFileTypeDescription", "Text File"), new List <string>()
{
".txt"
});
p.SuggestedStartLocation = PickerLocationId.DocumentsLibrary;
StorageFile txtFile = await p.PickSaveFileAsync();
if (null == txtFile)
{
return;
}
// Generate string for output
string plainText = pwfile.BuildStringForOutput(true);
// write plain text file
await FileIO.WriteBufferAsync(txtFile, Encoding.GetEncoding( "UTF-8" ).GetBytes( plainText ).AsBuffer());
}