rfc213.txt:Bernard Cosell:bbn:usa:2:aug:1971:20::draft-ietf-pkix-authorityclearanceconstraints:2010-03-20:2010-03-03:3:0:0:14:17:0:2007-12-14:322:draft-turner-caclearanceconstraints:2008-10-31:492:2010-06-08:78