public string Decrypt(string cipherText)
{
if (string.IsNullOrEmpty(cipherText))
{
return(cipherText);
}
byte[] salt = new byte[]
{
(byte)0xc7,
(byte)0x73,
(byte)0x21,
(byte)0x8c,
(byte)0x7e,
(byte)0xc8,
(byte)0xee,
(byte)0x99
};
PKCSKeyGenerator crypto = new PKCSKeyGenerator("PASSWORD HERE", salt, 20, 1);
ICryptoTransform cryptoTransform = crypto.Decryptor;
byte[] cipherBytes = System.Convert.FromBase64String(cipherText);
byte[] clearBytes = cryptoTransform.TransformFinalBlock(cipherBytes, 0, cipherBytes.Length);
return(Encoding.UTF8.GetString(clearBytes));
}
public void SaveLogin(string where)
{
byte[] array = new byte[8];
new Random(43287234).NextBytes(array);
using (ICryptoTransform cryptoTransform = new PKCSKeyGenerator().Generate("passwordfile", array, 5, 1))
{
byte[] bytes = Encoding.UTF8.GetBytes(this.Username + "\n");
byte[] bytes2 = cryptoTransform.TransformFinalBlock(bytes, 0, bytes.Length);
File.WriteAllBytes(where, bytes2);
}
}
private string EncryptPassword(string password)
{
PKCSKeyGenerator kp = new PKCSKeyGenerator();
ICryptoTransform crypt = kp.Generate("ServiceCenter", GetBytes(timeStamp),
17, // iterations of MD5 hashing
1); // number of 16-byte segments to create. // 1 to mimic Java behaviour.
String command = password;
byte[] newbytes = crypt.TransformFinalBlock(Encoding.UTF8.GetBytes(command), 0, command.Length);
string str = BitConverter.ToString(newbytes).Replace("-", "");
return(str);
}
public void SetLastLogin(String username, String password)
{
byte[] decrypted = BitConverter.GetBytes(IPAddress.NetworkToHostOrder((short)username.Length))
.Concat(System.Text.Encoding.UTF8.GetBytes(username))
.Concat(BitConverter.GetBytes(IPAddress.NetworkToHostOrder((short)password.Length)))
.Concat(System.Text.Encoding.UTF8.GetBytes(password)).ToArray();
PKCSKeyGenerator crypto = new PKCSKeyGenerator(LastLoginPassword, LastLoginSalt, 5, 1);
ICryptoTransform cryptoTransform = crypto.Encryptor;
byte[] encrypted = cryptoTransform.TransformFinalBlock(decrypted, 0, decrypted.Length);
if (File.Exists(lastLoginPath))
{
File.Delete(lastLoginPath);
}
using (Stream stream = File.Create(lastLoginPath))
stream.Write(encrypted, 0, encrypted.Length);
}
public String[] GetLastLogin()
{
try {
byte[] encryptedLogin = File.ReadAllBytes(lastLoginPath);
PKCSKeyGenerator crypto = new PKCSKeyGenerator(LastLoginPassword, LastLoginSalt, 5, 1);
ICryptoTransform cryptoTransform = crypto.Decryptor;
byte[] decrypted = cryptoTransform.TransformFinalBlock(encryptedLogin, 0, encryptedLogin.Length);
short userLength = IPAddress.HostToNetworkOrder(BitConverter.ToInt16(decrypted, 0));
byte[] user = decrypted.Skip(2).Take(userLength).ToArray();
short passLength = IPAddress.HostToNetworkOrder(BitConverter.ToInt16(decrypted, userLength + 2));
byte[] password = decrypted.Skip(4 + userLength).ToArray();
String[] result = new String[2];
result[0] = System.Text.Encoding.UTF8.GetString(user);
result[1] = System.Text.Encoding.UTF8.GetString(password);
return(result);
}
catch (Exception e) {
MessageBox.Show(e.StackTrace);
return(null);
}
}
