Just to complete the picture, I'll also add that OpenID Connect defines a nonce
claim (at the JWT claim level, rather than the JOSE header parameter level).
-- Mike
From: [email protected] [mailto:[email protected]] On Behalf Of
[email protected]
Sent: Monday, August 27, 2012 2:13 PM
To: [email protected]; [email protected]
Cc: [email protected]; [email protected]
Subject: Re: [jose] DISCUSS: Nonce/Timestamp parameter
We have exp
https://tools.ietf.org/html/draft-ietf-oauth-json-web-token-03#section-4.1.1
and iat
https://tools.ietf.org/html/draft-ietf-oauth-json-web-token-03#section-4.1.3
in JWT. Why do we need a timestamp?
Replay attacks of the same jwt can be mitigated through the jti claim
https://tools.ietf.org/html/draft-ietf-oauth-json-web-token-03#section-4.1.7
What do timestamp and nonce add to these?
Axel
From: Dick Hardt
[mailto:[email protected]]<mailto:[mailto:[email protected]]>
Sent: Monday, August 27, 2012 10:23 PM
To: Brian Eaton
Cc: Nennker, Axel; Jim Schaad; [email protected]<mailto:[email protected]>
Subject: Re: [jose] DISCUSS: Nonce/Timestamp parameter
On Aug 27, 2012, at 1:06 PM, Brian Eaton wrote:
On Mon, Aug 27, 2012 at 12:11 PM, Dick Hardt
<[email protected]<mailto:[email protected]>> wrote:
I have an application for JWT that is not OAuth2.
Should nonce and timestamp logic go in the application level protocol?
I prefer to NOT have the application level deal with token validity.
Having said that, nonce's are difficult to implement at scale and I have heard
of many sites that don't implement them fully.
Nonce alone can't be implemented efficiently. You have to have time stamps as
well, otherwise you are stuck storing ever nonce you've ever seen, forever.
Even nonce + time stamp is challenging in distributed systems. It adds a lot
of complexity. That complexity is sometimes merited, but not always.
Thanks for confirming my statement.
I have stopped using nonce and only use time stamps lately and have made the
system relatively stateless so that a second submission of the token is ok.
That may not work for everyone, but I have found that architecture to be easier
to implement and scale.
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