private void buttonSym_Click(object sender, EventArgs e)
{
if (comboBoxSym.SelectedIndex < 0) //walidacja comboBox
{
MessageBox.Show("Wybierz wartość dla pola comboBox 'Co chcesz zrobić?'");
}
else if (string.IsNullOrWhiteSpace(textBoxInputSym.Text)) //walidacja textBox
{
MessageBox.Show("Wypełnij pole 'Wprowadź tekst'");
}
else
{
string textSym = textBoxInputSym.Text; //wczytanie wartości z textBoxa
string password = "******"; //stworzenie hasła
byte[] Salt = Symmetric.GenerateSalt(); //wygenerowanie soli
byte[] IV = Symmetric.GenerateIV(); //wygenerowanie IV
byte[] key = Symmetric.CreateKey(password, Salt); //stworzenie klucza
string Encrypted = Symmetric.EncryptString(textSym, key, IV); //funkcja szyfrowania
string Decrypted = Symmetric.DecryptString(Encrypted, key, IV); //funkcja deszyfrowania
if (comboBoxSym.SelectedIndex == 1)
{
textBoxResultSym.Text = Decrypted;
} //odszyfrowywanie
if (comboBoxSym.SelectedIndex == 0)
{
textBoxResultSym.Text = Encrypted;
} //zaszyfrowywanie
}
}
public string decrypt(string code)
{
try
{
var sym = new Symmetric(_p);
sym.Key.Text = _k;
var d = new Encryption.Data();
d.Hex = code;
return sym.Decrypt(d).Text;
}
catch (Exception)
{
return string.Empty;
}
}
private void buttonSymFile_Click(object sender, EventArgs e)
{
OpenFileDialog dialog = new OpenFileDialog();
dialog.Filter = "Pliki textowe (txt)|*.txt"; //połączenie z plikiem
if (dialog.ShowDialog() == DialogResult.OK) //sprawdzenie połączenia
{
textBoxInputSym.Text = File.ReadAllText(dialog.FileName); //przypisanie wartości z pliku do textBoxa "Wprowadź tekst"
string toEncrypt = File.ReadAllText(dialog.FileName); //przypisanie wartości z pliku do zmiennej
string password = "******"; //stworznie hasła
byte[] Salt = Symmetric.GenerateSalt(); //wygenerowanie soli
byte[] IV = Symmetric.GenerateIV(); //wygenerowanie IV
byte[] key = Symmetric.CreateKey(password, Salt); //stworzenie klucza
string Encrypted = Symmetric.EncryptString(toEncrypt, key, IV); //zaszyfrowanie treści
textBoxResultSym.Text = Encrypted; //przypisanie wyniku
}
}
public string EncryptData(string data, EncryptType encryptType)
{
string encryptedString = "";
if (data == "null")
{
encryptedString = "null";
}
if (data != null && data != string.Empty && data.ToLower() != "null")
{
switch (encryptType)
{
case EncryptType.Symmetric:
Symmetric.Provider p = Symmetric.Provider.TripleDES;
Symmetric sym = new Symmetric(p);
//sym.Key.Text = symmetricKey;
Data encryptedData = null;
encryptedData = sym.Encrypt(new Data(data));
encryptedString = encryptedData.Base64;
break;
case EncryptType.Asymmetric:
Asymmetric asym = new Asymmetric();
Asymmetric.PublicKey pubkey = new Asymmetric.PublicKey();
Asymmetric.PrivateKey privkey = new Asymmetric.PrivateKey();
asym.GenerateNewKeyset(ref pubkey, ref privkey);
Data EncryptedData = null;
EncryptedData = asym.Encrypt(new Data(data), pubkey);
encryptedString = EncryptedData.Base64;
break;
case EncryptType.Hash:
Hash.Provider phash = Hash.Provider.SHA1;
Hash hash = new Hash(phash);
EncryptedData = hash.Calculate(new Data(data));
encryptedString = EncryptedData.Base64;
break;
}
}
return encryptedString;
}
public string DecryptData(string encryptedString, EncryptType encryptType)
{
string data = "";
if (encryptedString != null && encryptedString != string.Empty && data.ToLower() != "null")
{
switch (encryptType)
{
case EncryptType.Symmetric:
Symmetric.Provider p = Symmetric.Provider.TripleDES;
Data symdecryptedData = null;
p = Symmetric.Provider.TripleDES;
Symmetric sym2 = new Symmetric(p);
//sym2.Key.Text = symmetricKey;
System.Text.ASCIIEncoding symEncoding = new System.Text.ASCIIEncoding();
Byte[] symBytes = symEncoding.GetBytes(encryptedString);
Data symencryptedData = null;
symencryptedData = new Data();
symencryptedData.Base64 = encryptedString;
symdecryptedData = sym2.Decrypt(symencryptedData);
data = symdecryptedData.Text;
break;
case EncryptType.Asymmetric:
System.Text.ASCIIEncoding asymEncoding = new System.Text.ASCIIEncoding();
Data asymdecryptedData = null;
Asymmetric asym2 = new Asymmetric();
Byte[] asymBytes = asymEncoding.GetBytes(encryptedString);
Data asymencryptedData = null;
asymencryptedData = new Data();
asymencryptedData.Base64 = encryptedString;
asymdecryptedData = asym2.Decrypt(asymencryptedData);
data = asymdecryptedData.Text;
break;
case EncryptType.Hash:
//hashing is one way
break;
}
}
return data;
}
public string encrypt(string data)
{
var sym = new Symmetric(_p);
sym.Key.Text = _k;
return sym.Encrypt(new Encryption.Data(data)).ToHex();
}
public EncryptHelper(Symmetric.Provider provider, string key)
{
_p = provider;
_k = key;
}