public static string Decrypt <T>(string text, string password, string salt) where T : SymmetricAlgorithm, new()
{
// DeriveBytes rgb = new Rfc2898DeriveBytes(password, Encoding.Unicode.GetBytes(salt));
DeriveBytes rgb = new PBKDF2(Encoding.Unicode.GetBytes(password), Encoding.Unicode.GetBytes(salt), 1);
SymmetricAlgorithm algorithm = new T();
byte[] rgbKey = rgb.GetBytes(algorithm.KeySize >> 3);
byte[] rgbIV = rgb.GetBytes(algorithm.BlockSize >> 3);
ICryptoTransform transform = algorithm.CreateDecryptor(rgbKey, rgbIV);
using (MemoryStream buffer = new MemoryStream(Convert.FromBase64String(text)))
{
using (CryptoStream stream = new CryptoStream(buffer, transform, CryptoStreamMode.Read))
{
using (StreamReader reader = new StreamReader(stream, Encoding.Unicode))
{
return(reader.ReadToEnd());
}
}
}
}
public static string Encrypt <T>(string value, string password, string salt) where T : SymmetricAlgorithm, new()
{
// DeriveBytes rgb = new Rfc2898DeriveBytes(password, Encoding.Unicode.GetBytes(salt));
DeriveBytes rgb = new PBKDF2(Encoding.Unicode.GetBytes(password), Encoding.Unicode.GetBytes(salt), 1);
SymmetricAlgorithm algorithm = new T();
byte[] rgbKey = rgb.GetBytes(algorithm.KeySize >> 3);
byte[] rgbIV = rgb.GetBytes(algorithm.BlockSize >> 3);
ICryptoTransform transform = algorithm.CreateEncryptor(rgbKey, rgbIV);
using (MemoryStream buffer = new MemoryStream())
{
using (CryptoStream stream = new CryptoStream(buffer, transform, CryptoStreamMode.Write))
{
using (StreamWriter writer = new StreamWriter(stream, Encoding.Unicode))
{
writer.Write(value, 0, value.Length);
}
}
return(Convert.ToBase64String(buffer.ToArray()));
}
}
