Another argument against providing claims in the code is that it can be stolen by rogue
mobile apps and PKCE does not help here as it only prevents using stolen codes. Encrypting
the code could help, but this might also have impact on code size. Maybe it is best to
first try the on-demand replication approach and see if it nails it before introducing
another configuration switch that could be set wrong and the associated code?
Best regards,
Sebastian
Mit freundlichen Grüßen / Best regards
Sebastian Schuster
Engineering and Support (INST/ESY1)
Bosch Software Innovations GmbH | Schöneberger Ufer 89-91 | 10785 Berlin | GERMANY |
www.bosch-si.com
Tel. +49 30 726112-485 | Fax +49 30 726112-100 | Sebastian.Schuster(a)bosch-si.com
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-----Original Message-----
From: keycloak-dev-bounces(a)lists.jboss.org [mailto:keycloak-dev-
bounces(a)lists.jboss.org] On Behalf Of Marek Posolda
Sent: Dienstag, 23. Mai 2017 10:41
To: Bill Burke <bburke(a)redhat.com>; keycloak-dev(a)lists.jboss.org
Subject: Re: [keycloak-dev] Cross-DC and codeToToken request
On 22/05/17 15:16, Bill Burke wrote:
>>> 4) Is it ok to have option to relax on code one-time use? Otherwise
>>> in cross-DC and without sticky session, the every code exchange may
>>> require SYNC request to another DCs to doublecheck code was not used
already.
>>> Not good for performance..
>>>
>> Maybe this is OK. Confidential apps needs credentials and then
>> there's Proof Key for Code Exchange for public clients. Although the
>> latter may be another issue in cross-DC?
>>
>>
>>> For now, I can see some combination of 1,3,4 as a way to go. WDYT?
>>> Marek
> I think 1 and 4 will hobble us for future things we want to do.
Ok, I understand 1 may be problematic for some scenarios and won't do it. But
what exactly is a blocker for relax on code one-time use?
I am thinking that code will be still single-use by default as it's required per
OAuth2/OIDC specs. However admins, who prefer performance over security, may
choose to relax strict code one-time use. This may be new option - not sure
whether configurable per realm or per client. I can see it's likely ok in some
environments (private corporate networks
etc) ?
Marek
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