java - Read username from smart card with Tomcat 7 -

i working on web-application runs on tomcat 7 server. want make site accessible via smart card, made clientauth="true" change in tomcat server.xml.

i can access web-app smart card now, want able read username/alias smart card in web-app. efficient way this?

also, modern browsers take care of crl checking when site requests client auth?

thanks

you have implemenent x509usernameretriever , pass class name this method of realm. realm should rest. guess after subjectaltname field retrieve upn of user.