[Standards] XMPP Certificate checking algorithm
stpeter at stpeter.im
Mon Mar 24 18:04:44 UTC 2008
Alexey Melnikov wrote:
> 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).
So I see. That seems like a helpful document. Is it being discussed on
the TLS list?
-------------- next part --------------
A non-text attachment was scrubbed...
Size: 7338 bytes
Desc: S/MIME Cryptographic Signature
More information about the Standards