//saltBytes should be atleast 8 (example: { 1, 2, 3, 4, 5, 6, 7, 8 });
public static CryptoResult_Bytes Encrypt(byte[] data, byte[] password, byte[] saltBytes)
{
CryptoResult_Bytes result = new CryptoResult_Bytes();
result.Bytes = data;
result.Done = false;
using (MemoryStream ms = new MemoryStream())
using (RijndaelManaged AES = new RijndaelManaged())
{
Rfc2898DeriveBytes key = new Rfc2898DeriveBytes(password, saltBytes, 1000);
AES.KeySize = 256;
AES.BlockSize = 128;
AES.Key = key.GetBytes(AES.KeySize / 8);
AES.IV = key.GetBytes(AES.BlockSize / 8);
AES.Mode = CipherMode.CBC;
using (CryptoStream cs = new CryptoStream(ms, AES.CreateEncryptor(), CryptoStreamMode.Write))
{
cs.Write(data, 0, data.Length);
cs.Close();
}
data = ms.ToArray();
result.Bytes = data;
result.Done = true;
}
return result;
}
public static CryptoResult_Text Decrypt(string text, string password, byte[] saltBytes)
{
CryptoResult_Text result = new CryptoResult_Text();
result.Text = text;
result.Done = false;
if (string.IsNullOrEmpty(text))
return result;
if (string.IsNullOrEmpty(password))
return result;
byte[] data = Convert.FromBase64String(text);
byte[] _password = Encoding.UTF8.GetBytes(password);
_password = SHA256.Create().ComputeHash(_password);
CryptoResult_Bytes _result = Decrypt(data, _password, saltBytes);
if (!_result.Done)
return result;
result.Done = _result.Done;
result.Text = Encoding.UTF8.GetString(_result.Bytes);
return result;
}
public static CryptoResult_Text Encrypt(string text, string password, byte[] saltBytes)
{
CryptoResult_Text result = new CryptoResult_Text();
result.Text = text;
result.Done = false;
if (string.IsNullOrEmpty(text))
return result;
if (string.IsNullOrEmpty(password))
return result;
byte[] data = Encoding.UTF8.GetBytes(text);
byte[] _password = Encoding.UTF8.GetBytes(password);
_password = SHA256.Create().ComputeHash(_password);
CryptoResult_Bytes _result = Encrypt(data, _password, new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 });
if (!_result.Done)
return result;
result.Done = true;
result.Text = Encoding.UTF8.GetString(_result.Bytes);
return result;
}
