Encrypting/Decrypting web.config in .NET

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();
    }
}