How to Encrypting/Decrypting web.config Information

public class EncryptDecryptWebConfig
    {
     
    public static void mEncryptWebConfig(string appPath, string protectedSection, string dataProtectionProvider)
    {
        System.Configuration.Configuration webConfig =
                    WebConfigurationManager.OpenWebConfiguration(appPath);
        ConfigurationSection webConfigSection = webConfig.GetSection(protectedSection);

         if (!webConfigSection.SectionInformation.IsProtected)
         {
             webConfigSection.SectionInformation.ProtectSection(dataProtectionProvider);
            webConfig.Save();
        }
    }

    public static void mDecryptWebConfig(string appPath, string protectedSection)
    {
        System.Configuration.Configuration webConfig =
                    WebConfigurationManager.OpenWebConfiguration(appPath);
        ConfigurationSection webConfigSection = webConfig.GetSection(protectedSection);

         if (webConfigSection.SectionInformation.IsProtected)
         {
             webConfigSection.SectionInformation.UnprotectSection();
            webConfig.Save();
        }
    }


    }