Qt, Linux/Unix PAM and cross-platform authentication systems

[alexbottoni]

I'm developing a Qt 4.8, C++ Linux/Ubuntu-specific application (No cross-platform. No tablets/smartphones, etc. Just Linux Ubuntu with KDE). I wonder if and how I can use the standard Linux PAM (Pluggable Authentication Module) system to authenticate my users.

Of course, I can use the existing (C, not C++) LibPAM API for this task:
"Linux PAM(3) manual page":http://linux.die.net/man/3/pam
"Development with PAM":http://www.packtpub.com/article/development-with-pluggable-authentication-modules-pam at PackPub site
(a Linux application can invoke the underlying, system-wide PAM authentication system to perform this task)

Nevertheless, I wonder if Qt supports Linux/Unix PAM system in its own way. Does it exist any QtPAM module?

Moreover, I wonder if Qt implements a cross-platform, portable way to authenticate the user on the local machine (No SSO, no OpenID, no remote authentication, no LDAP and/or RADIUS . Just local, "disconnected" user authentication). As long as I know, both Windows (since WinNT) and Mac OS X have an authentication system quite similar to Linux PAM so it would be theoretically possible to abstract this functionality at the Qt level and make it cross-platform.

Does anybody have an answer to these questions?

Thanks