Subject: cross-certify?

From: "gang cao" <[email-masked]>
Date: Tue, 13 Apr 1999 11:08:22 +0800

hi,
    I  want to know something about cross-certify.
I read  some RFC and draft ,but found few about
this.who could tell me some information about
cross-certify and where can i find paper about
cross-certify?
    thanks for help.