[Openid-specs-ab] Potential tickets to file
Michael.Jones at microsoft.com
Tue Jan 17 22:36:46 UTC 2012
I don't see a compelling case for baking token lifetime decisions into the specs at this time. This seems like an area where we would profitably learn from implementation experiences, once a number of them have been in production and specific issues and choices faced can be identified and described.
From: openid-specs-ab-bounces at lists.openid.net [mailto:openid-specs-ab-bounces at lists.openid.net] On Behalf Of Nat Sakimura
Sent: Tuesday, January 17, 2012 2:10 PM
To: John Bradley
Cc: openid-specs-ab at lists.openid.net
Subject: Re: [Openid-specs-ab] Potential tickets to file
In addition, sometimes it is useful to have a token that survives password change as well. E.g., the token for email clients while using OTP on the web side.
On 2012/01/18, at 4:53, John Bradley <ve7jtb at ve7jtb.com<mailto:ve7jtb at ve7jtb.com>> wrote:
Do we need a standard scope for requesting offline access (long-lived access token)?
Some IdP use a scope for offline_access.
Enables your application to perform authorized requests on behalf of the user at any time. By default, most access tokens expire after a short time period to ensure applications only make requests on behalf of the user when the are actively using the application. This permission makes the access token returned by our OAuth endpoint long-lived.
What is the default openID Connect access token lifetime without such a scope?
Single use? 30min? Session duration?
There are also some undefined states in OAuth 2.0 with expires_in.
I would propose that openID connect access tokens are single use by default.
A server not sending expires_in is indicating default expiry behavior.
A server may make them longer lived by indicating that with expires_in.
A value of 0 for expires_in indicates the token will not expire due to time, though it may due to password reset or users revoking access.
Facebook seems to use the 0 value but I can't find it documented anyplace.
If we go with single use the client can always get another token, and the client doesn't need to worry about storing access tokens in the simple case.
It will help if we can interop make this consistent across IdP.
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