Ben Laurie <[email protected]> wrote
Wed, 18 May 2016 18:30:37 +0100:

| On 18 May 2016 at 17:23, Linus Nordberg <[email protected]> wrote:
| > Ben Laurie <[email protected]> wrote
| > Fri, 13 May 2016 15:56:44 +0100:
| >
| > | Actually, it seems to me that the simplest answer is to allow lookups
| > | in logs based on SCT alone. Then the SCT can be validated using the
| > | retrieved chain.
| >
| > That seems odd. From a logs point of view, an SCT is not a persistent
| > object.
| >
| > I don't know about other implementations but catlfish would not be able
| > to efficiently find an entry in the database given only an SCT.
| 
| Are you saying there's some technical barrier to doing this, or just
| that as it stands you wouldn't be able to?

I was being inprecise. I should have said that it would require some
redesign.


| It seems to me that the log could easily save SCTs it issued alongside
| the cert chains it issued them for.

All SCT's for every chain, I presume, if there's going to be any point
in offering a lookup with an SCT as input? This would complicate things
at least in our design. I'm sure it could be solved at the price of more
complexity.


| And that it could easily create an index based on those SCTs.


| Note that 6962-bis already requires you to return SCTs in some lookups...

You meen get-entries? I don't see how that's relevant. An SCT can be
generated given the data in leaf_input. No need to store it, unless you
wanted to for caching of course (we do that on frontend nodes). There's
a big difference between doing this and indexing on SCT's though.

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