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RE: delta CRLs - NR assumptions



I cannot see why anyone would not agree with this.  The GTA infrastructure uses emergency CRLs at the root level.  It is up to the relying party on whether they check certificate status information by retrieving CRLs or using an OCSP service, and their decision will be based on their own needs.  We recommend that they use OCSP specifically to ensure that the latest information is available (and expect that most of the internal relying parties to use this).

 

Regards,

Liaquat  

 

-----Original Message-----
From: owner-ietf-pkix@xxxxxxxxxxxx [mailto:owner-ietf-pkix@xxxxxxxxxxxx]On Behalf Of Roger Younglove
Sent: 15 June 2001 20:00
To: Santosh Chokhani
Cc: ietf-pkix@xxxxxxx
Subject: RE: delta CRLs - NR assumptions

 

I agree with Santosh, as long as the CP/CPS spells out how the CRLs/ delta CRLs are published the it incumbent upon on the Relying Party to use them as they see fit.
At 01:33 PM 06/15/2001 , Santosh Chokhani wrote:


I do not see much of any problem with delta CRL.  A CA can communicate current revocation information as complete or as incremental.

It is up to the relying parties and the CP/CPS to determine how current the revocation information needs to be.

Delta CRL is good mechanism.  It makes lot of engineering sense.  If a CA or CP/CPS wants all relying parties to use information as of certain time, they can do so by issuing CRLs and/or delta CRLs at define times.

-----Original Message-----
From: Phillip Hallam-Baker [mailto:pbaker@xxxxxxxxxxxx]
Sent: Friday, June 15, 2001 12:36 PM
To: 'Denis Pinkas'; Manger, James H
Cc: ietf-pkix@xxxxxxx
Subject: RE: delta CRLs - NR assumptions

> I see a problem here. If you use delta-CRls,

I see lots of problems if you use delta CRLs. A veritable sea of troubles
bringing waves of misery and destruction upon an unhappy world.

If you want to ban anything to prevent this woe, then ban delta CRLs, this
solution would have the considerable advantage of reducing the size of the
RFC by several dead trees.

It is simply not possible to ban emergency CRLs. Nor do I accept the premise
that consistency is more desirable than correct answers. If an OCSP service
reacts on the basis of continuously updated real time data then it will
inevitably give answers that are different (i.e. right more often) to those
that an application relying on stale CRL data will give. Call such behaviour
'inconsistent' if you like.

       
Phill


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Roger W. Younglove, CISSP
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Lucent Worldwide Services--Information Security
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