Hi Shumon,
Shumon Huque wrote:
Any comments on the following server certificate checking
algorithm?
1. (If implementation understands RFC4985) look for RFC4985 style
service identity in an otherName field (of type OID id-on-dnsSRV).
The expected identity should be:
_xmpp-client.DOMAIN for client-server connections
_xmpp-server.DOMAIN for server-server connections
where DOMAIN is the JID domain.
2. Look for expected server identity (either JID domain or
explicitly configured server hostname) in:
a. subjectAltName otherName field of type id-on-xmppAddr
b. subjectAltName dNSName field
c. subject DN's Common Name field
Wildcard name matches could be allowed in (b) and (c).
Have you compared this to recommendations in
draft-hodges-server-ident-check-00.txt? This draft has some extra
recommendation about internationalized domain names (IDN).
Also, draft-hodges-server-ident-check-00.txt prohibits wildcard checks
in CNs (case c).
