On 12/14/2016 04:57 PM, Stephen Frost wrote:
* Peter Eisentraut (peter.eisentr...@2ndquadrant.com) wrote:
On 12/14/16 5:15 AM, Michael Paquier wrote:
I would be tempted to suggest adding the verifier type as a new column
This discussion seems to continue to come up and I don't entirely
understand why we keep trying to shove more things into pg_authid, or
worse, into rolpassword.
I understand the relational beauty of having a separate column for the
verifier type, but I don't think it would be practical. For starters,
we'd still like to have a self-identifying string format like
"scram-sha-256:<stuff>", so that you can conveniently pass the verifier
as a string to CREATE USER. I think it'll be much better to stick to one
format, than try to split the verifier into type and the string, when it
enters the catalog table.
We should have an independent table for the verifiers, which has a
different column for the verifier type, and either starts off supporting
multiple verifiers per role or at least gives us the ability to add that
easily later. We should also move rolvaliduntil to that new table.
I agree we'll probably need a new table for verifiers. Or turn
rolpassword into an array or something. We discussed that before,
however, and it didn't really go anywhere, so right now I'd like to get
SCRAM in with minimal changes to the rest of the system. There is a lot
of room for improvement once it's in.
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