private void MenuHelp_Click(object sender, EventArgs e)
{
Console.WriteLine("Started MenuHelp_Click(...)");
//Console.WriteLine(this.data.ToString());
Cryptographer c = new Cryptographer(PasswordStorage.TEMP_TEST_MASTERKEY);
string encr = "Test!?tseT";
Console.WriteLine($"{encr} => {c.Encrypt(encr)} => {c.Decrypt(c.Encrypt(encr))}");
string pp = "ppas|" + encr + "|ollse213";
Console.WriteLine($"RemoveSubString(...) = {PasswordStorage.RemoveSubString(pp, encr)}");
Console.WriteLine("Ended MenuHelp_Click(...)");
}
public static PasswordStorage DeSerialize(string FilePathAndName)
{
bool retry = false;
string encrypted_data, decrypted_data;
do
{
retry = false;
try
{
// Read
using (FileStream file = new FileStream(FilePathAndName, FileMode.Open))
{
using (StreamReader sr = new StreamReader(file))
{
encrypted_data = sr.ReadToEnd();
}
}
Cryptographer c = new Cryptographer(TEMP_TEST_MASTERKEY);
if (!encrypted_data.Contains(c.MasterKeyHashString))
{
throw new Exception("No CryptoClearance!"); // TODO: Change to good crypto-exception and explain to user that its the wrong password when this is thrown!
}
// Remove MasterKeyHash (and possible carriage returns, newlines, ...)
encrypted_data = RemoveSubString(encrypted_data, c.MasterKeyHashString).Trim(new char[] { '\r', '\n' });
decrypted_data = c.Decrypt(encrypted_data);
// Build tmp xml stuff
PasswordStorage tmp_storage = new PasswordStorage();
tmp_storage.ImportFromXmlString(decrypted_data);
return(tmp_storage);
}
catch (Exception)
{
var response = MessageBox.Show("An error occured during reading the file", "Couldn't read file", MessageBoxButtons.RetryCancel, MessageBoxIcon.Error);
retry = (response == DialogResult.Retry);
}
} while (retry);
return(null);
}
public void Serialize(string FilePathAndName)
{
bool retry = false;
byte[] xml_bytes;
do
{
retry = false;
try
{
using (FileStream file = new FileStream(FilePathAndName, FileMode.Create))
{
using (MemoryStream ms = new MemoryStream())
{
this.data.WriteXml(ms);
xml_bytes = ms.ToArray();
}
Cryptographer c = new Cryptographer(TEMP_TEST_MASTERKEY);
string encrypted_data = c.Encrypt(xml_bytes);
using (StreamWriter sw = new StreamWriter(file))
{
var x = Encoding.UTF8.GetString(c.MasterKeyHash);
sw.WriteLine(x);
sw.WriteLine(encrypted_data);
}
}
}
catch (Exception)
{
var response = MessageBox.Show("An error occured during writing the file", "Couldn't write file", MessageBoxButtons.RetryCancel, MessageBoxIcon.Error);
retry = (response == DialogResult.Retry);
}
} while (retry);
}