Re: [Ace] Overwriting Tokens

Stefanie Gerdes <gerdes@tzi.de> Wed, 12 December 2018 10:17 UTC

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From: Stefanie Gerdes <gerdes@tzi.de>
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Date: Wed, 12 Dec 2018 11:16:57 +0100
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Subject: Re: [Ace] Overwriting Tokens
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Hi Ludwig,

On 12/12/2018 11:05 AM, Ludwig Seitz wrote:
> On 12/12/2018 10:33, Stefanie Gerdes wrote:
>> Hi again,
>>
>> I have one additional comment to ace-oauth-17:
>>
>> Section 5.8.1 recommends that RS stores only one token per key and that
>> existing tokens are overwritten by new tokens. I wonder how the RS knows
>> which token is the most recent. I don't think the expiration time helps
>> in this case because it should be possible for the AS to
>> provide a token that expires earlier than the previous token.
>>
>>
>> Viele Grüße
>> Steffi
>>
> 
> "Recent" here is meant as "most recently received". That is something
> the RS definitely can track.

The token most recently received by RS is not necessarily the newest.
A client may (accidentally or not) send the older token later than the
newer token.

Viele Grüße
Steffi