pam_radius_auth.so authentication algorithm

Hello, I want to setup a centralized authentication on all my Linux servers. To do so, I'am trying to setup Radius authentication on a Windows Active Directory (with the NPS role) using the PAM module pam_radius_auth.so https://freeradius.org/sub_projects/. The authentication works, however, the NPS (Radius Server) is complaining about the authentication method used by pam_radius_auth.so. It says that the client is using PAP insecure PAP protocol. I didn't find any parameter on the module documentation <https://github.com/FreeRADIUS/pam_radius> to change this behavior. Does pam_radius_auth.so support other secure protocol like CHAP ? Thanks in advance for your help. Best Regards,