[Openid-specs-ab] Issue #1174: Federation: The OP Constructing the Response - Clarify which keys need to be preserved to facilitate roll-over (openid/connect)

Vladimir Dzhuvinov vladimir at connect2id.com
Fri Jun 12 19:04:09 UTC 2020

Thanks Tom for the reminder!

The issuer is the OIDC RP.


On 08/06/2020 17:29, Tom Jones via Openid-specs-ab wrote:
> It seems like I need to repeat this same warning at least once per year.
> The issue with key retention is NOT when the issuer will need to use
> the keys, but how long any relying party (in the broadest possible
> sense) might need to use the keys. For signing keys this means when
> will someone need to verify a signature, for encryption keys it means
> when will someone need to decrypt an archived version of the data.
> For example, the master CA keys need to be available for 25 years
> after they were last used to sign a certificate.
> Peace ..tom
> On Sun, Jun 7, 2020 at 11:48 PM Vladimir Dzhuvinov via Openid-specs-ab
> <openid-specs-ab at lists.openid.net
> <mailto:openid-specs-ab at lists.openid.net>> wrote:
>     New issue 1174: Federation: The OP Constructing the
>     Response - Clarify which keys need to be preserved to facilitate
>     roll-over
>     https://bitbucket.org/openid/connect/issues/1174/federation-92221-the-op-constructing-the
>     Vladimir Dzhuvinov:
>     In
>     [https://openid.net/specs/openid-connect-federation-1\_0.html#rfc.section.](https://openid.net/specs/openid-connect-federation-1_0.html#rfc.section.
>     <https://openid.net/specs/openid-connect-federation-1%5C_0.html#rfc.section.](https://openid.net/specs/openid-connect-federation-1_0.html%23rfc.section.>
>     > At this point, if there already exists a client registration
>     under the same entity identifier then that registration MUST be
>     regarded as invalid. **Note that key material from the previous
>     registration MUST be kept to make key rollover possible.**
>     Is this the entity JWK set or the JWK set referenced by the client
>     metadata \( `jwks_uri` or `jwks`\)?
>     1. If it’s the entity statement JWK set we don’t quite understand
>     why these will need to be kept after an update.
>     2. As for the jwks\_uri / jwks, the roll-over is managed by the RP
>     / client, by simply keeping the old keys in the set, until no
>     longer used.
>     If some roll-over needs to happen re 1 \(entity statement JWK
>     set\) then this could also be managed by the client, thus making
>     the requirement for the OP redundant.
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