Pam_p11 is a plugable authentication module (pam) package for using crpytographic tokens such as smart cards and usb crypto tokens for authentication. Pam_p11 uses libp11 to access any PKCS#11 module. It should be compatible with any implementation, but it is primarely developed using OpenSC. Pam_p11 implements two authentication modules: * pam_p11_openssh authenticates the user using his openssh ~/.ssh/authorized_keys file. * pam_p11_opensc authenticates the user using certificates found in ~/.eid/authorized_certificates. Pam_p11 is very simple, it has no config file, no options other than the PKCS#11 module file, does not know about certificate chains, certificate authorities, revocation lists or OCSP. Perfect for the small installation with no frills. WWW: https://github.com/OpenSC/OpenSC/wiki/pam_p11-simple-RSA-authentication-with-PKCS%2311-modules