Re: [lamps] Revocation Request Format?
Phillip Hallam-Baker <phill@hallambaker.com> Sun, 04 March 2018 03:24 UTC
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From: Phillip Hallam-Baker <phill@hallambaker.com>
Date: Sat, 03 Mar 2018 22:24:10 -0500
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To: Ryan Sleevi <ryan-ietf@sleevi.com>
Cc: Peter Bowen <pzbowen@gmail.com>, SPASM <SPASM@ietf.org>, Stephen Farrell <stephen.farrell@cs.tcd.ie>
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Subject: Re: [lamps] Revocation Request Format?
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On Sat, Mar 3, 2018 at 1:34 PM, Ryan Sleevi <ryan-ietf@sleevi.com> wrote: > > On Sat, Mar 3, 2018 at 12:07 PM Phillip Hallam-Baker < > phill@hallambaker.com> wrote: > >> On Sat, Mar 3, 2018 at 1:29 AM, Stephen Farrell < >> stephen.farrell@cs.tcd.ie> wrote: >> >>> >>> >>> On 02/03/18 22:33, Ryan Sleevi wrote: >>> > That's why I think an effort to standardize there is bad, not good, >>> because >>> > it counterintuitively fragments the ecosystem, without addressing the >>> > general issue, which is in my view is moreso a matter of policy, >>> because of >>> > the inherent constraints of 2). >>> >>> FWIW, I don't agree with your conclusion that *any* standardisation >>> of revocation signals would be counter-productive, but I also don't >>> think we ought do any such standardisation unless there are a bunch >>> of CAs and writers of private key handling s/w who do in fact want >>> to use the same new format for revocation signalling. I don't see a >>> whole bunch of CAs and others wanting that right now. >>> >>> So in the short term, I think we agree as to what to (not) do:-) >>> >> >> At this point, the incident that motivated this proposal happened 4 days >> ago. So it would probably be a mistake to bang out a draft and promote it >> to RFC. >> >> What I was most interested to know is if we had done the work already >> and the answer appears to be not in PKIX but possibly in ACME. It might >> just be that all we need to do is to add a few paragraphs to ACME and maybe >> get an IANA content type for whatever the standalone message blob is. >> >> >> I do think we will need to standardize because we are almost certain to >> want to pop these blobs in our CT logs at some point and it is in any case >> the right thing to do. One code path is always better than five code paths >> offering the same functionality. >> > > It might be good to start with a Use Cases document first, to figure out > who the participants/constituents would be. This would align with Stephen’s > remark re: what writers of private key handling s/w should use. Considering > such solutions naturally preclude solving (some of) the “compromise” > scenarios that must be dealt with today, the merits of those use cases > could be independently evaluated before trying to shape such work. > > I view the transparency aspect as similarly orthogonal - such transparency > is more beneficial for demonstrating the private key holder authorized a > revocation. In today’s Web PKI, that is a real problem with CAs > unilaterally revoking for specious reasons (“malware”, “customer stopped > paying monthly fee”, “we added a new domain name to the customer account”) > or Resellers, often misguided, requesting revocation per the terms of their > contract with the CA without regard to whether or not the Certificate > recipient desires it. > >> The customer's credit card having been declined due to fraud or a chargeback for fraud is actually one of the most potent signs indicating that the certificate is likely to be used maliciously.
- [lamps] Revocation Request Format? Phillip Hallam-Baker
- Re: [lamps] Revocation Request Format? Ryan Sleevi
- Re: [lamps] Revocation Request Format? Peter Bowen
- Re: [lamps] Revocation Request Format? Phillip Hallam-Baker
- Re: [lamps] Revocation Request Format? Jacob Hoffman-Andrews
- Re: [lamps] Revocation Request Format? Ryan Sleevi
- Re: [lamps] Revocation Request Format? Stephen Farrell
- Re: [lamps] Revocation Request Format? Phillip Hallam-Baker
- Re: [lamps] Revocation Request Format? Ryan Sleevi
- Re: [lamps] Revocation Request Format? Tim Hollebeek
- Re: [lamps] Revocation Request Format? Ryan Sleevi
- Re: [lamps] Revocation Request Format? Tim Hollebeek
- Re: [lamps] Revocation Request Format? Tim Hollebeek
- Re: [lamps] Revocation Request Format? Stephen Farrell
- Re: [lamps] Revocation Request Format? Phillip Hallam-Baker
- Re: [lamps] Revocation Request Format? Ryan Sleevi
- Re: [lamps] Revocation Request Format? Phillip Hallam-Baker
- Re: [lamps] Revocation Request Format? Tim Hollebeek
- Re: [lamps] Revocation Request Format? Stephen Farrell
- Re: [lamps] Revocation Request Format? Tim Hollebeek
- Re: [lamps] Revocation Request Format? Ryan Sleevi
- Re: [lamps] Revocation Request Format? Russ Housley
- Re: [lamps] Revocation Request Format? Russ Housley
- Re: [lamps] Revocation Request Format? Ryan Sleevi
- Re: [lamps] Revocation Request Format? Russ Housley
- Re: [lamps] Revocation Request Format? Stephen Farrell
- Re: [lamps] Revocation Request Format? Dr. Pala