Re: What ASN.1 got right

Michael Thomas <mike@mtcc.com> Thu, 04 March 2021 17:19 UTC

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Subject: Re: What ASN.1 got right
To: Nico Williams <nico@cryptonector.com>
Cc: ietf@ietf.org
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From: Michael Thomas <mike@mtcc.com>
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Date: Thu, 4 Mar 2021 09:19:32 -0800
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On 3/4/21 9:15 AM, Nico Williams wrote:
> On Thu, Mar 04, 2021 at 09:07:51AM -0800, Michael Thomas wrote:
>> On 3/4/21 7:54 AM, Nico Williams wrote:
>>> You can dispense with CRLs/OCSP if you use sufficiently short-lived
>>> certificates.
>>>
>>> That requires an online CA to certify those short-lived certificates,
>>> but it's online infrastructure that is required only once or twice per
>>> rotation period for any one end entity.
>> "requires an online" being the key phrase. If you require online, you can
>> reduce the revocation linger time to zero, and you don't need to onerous
>> infrastructure of X.509 at all. Naked public keys are our friends.
> The "... that is required only once or twice per rotation period for any
> one end entity" part is an essential modifier to "requires an online".
> You can't focus on the "requires an online" without addressing the other
> part.

Your online requirements cherry picks that the online requirements will 
neatly line up in times of need and ignores other online requirements. 
Authentication is one small part of a larger system. That larger system 
almost always needs to be online 24/7. X.509 is a relic from the past.

Mike