A medium$-$sized enterprise is revamping its wireless network infrastructure to improve security. The IT manager decided to update the company's Wi$-$Fi authentication method as the first step. The main objective is to have a solution that ensures the identity of the connecting devices while also providing an additional layer of security for user authentication. Which Wi$-$Fi authentication method BEST fits the IT manager's requirement to validate device identity and robust user authentication for the company's wireless network infrastructure?