Encrypt/Decrypt connection strings in web.config

const string PROVIDER = "DataProtectionConfigurationProvider";
const string PROVIDER = "RSAProtectedConfigurationProvider";

Configuration ObjConfiguration =
WebConfigurationManager.OpenWebConfiguration(Request.ApplicationPath);

ConnectionStringsSection cnStrSettings = ObjConfiguration.ConnectionStrings;

//Encrypt the Connection Strings Section
cnStrSettings.SectionInformation.ProtectSection(PROVIDER);

//Decrypt the Connection Strings Section
if (cnStrSettings.SectionInformation.IsProtected)
{
cnStrSettings.SectionInformation.UnprotectSection();
}
ObjConfiguration.Save();