6929552 pkinit preauth plugin should prompt user to provide token when not found
6929628 pkinit preauth plugin needs interface so caller can provide PIN
PSARC/2008/631 Kerberos PKINIT PSARC/2008/358 removal of kadm5.keytab 6698059 Resync with mit 1.6.3 (pkinit) 6749302 pam_krb5 auth fails with key table entry not found