以下の関数で暗号化された文字列を復号化するにはどうすればよいですか?
private static byte[] salt = new byte[] { 23, 21, 32, 33, 46, 59, 60, 74 };
private static int iterations = 1000;
private static int cb = 32;
public static string GetEncrypt(string plainText)
{
Rfc2898DeriveBytes k = new Rfc2898DeriveBytes(plainText, salt, iterations);
byte[] data = k.GetBytes(cb);
return Convert.ToBase64String(data);
}