Hello everyone,

After a brief discussion with Mike on the A/B Connect WG call today I was
asked to present how the OIDF FAPI WG currently works around the fact that
`Ed25519` JWS Algorithm Identifier is not registered in the IANA registry
yet.

In the FAPI 2.0 Security Profile draft, which is currently in Working Group
Last Call for its Final state, we have a workaround note for its upcoming
registration that we would be able to remove if the IANA registration for
Ed25519 was done.

See
https://openid.bitbucket.io/fapi/fapi-2_0-security-profile.html#section-5.4
(not a permalink)

Authorization servers, clients, and resource servers when creating or
processing JWTs shall ... use PS256, ES256, or EdDSA (using the Ed25519
variant) algorithms ...

later on there's a note

Note: As of the time of writing there isn't a registered fully-specified
algorithm describing "EdDSA using the Ed25519 variant". If such algorithm
is registered in the future, it is also allowed to be used for this profile.

Mike mentioned the possibility of an early IANA registration which would
enable us to remove this note from the FAPI 2.0 Security Profile replacing
it with an actual Ed25519 value in the main spec body identifier
enumeration.

Best,
*Filip Skokan*
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