[C#]base64 암호화 인코딩 디코딩

//인코딩
public static string Base64Encode(string text)
{
     var textBytes = System.Text.Encoding.UTF8.GetBytes(text);
     return System.Convert.ToBase64String(textBytes);
}
//디코딩
public static string Base64Decode(string base64)
{
      var base64Bytes = System.Convert.FromBase64String(base64);
      return System.Text.Encoding.UTF8.GetString(base64Bytes);
}

참조
https://www.dofactory.com/code-examples/csharp/encode-decode-base64-string