[Openid-specs-ab] Issue #1701: fix: [Federation] trust_chain parameter in authz request without PAR and JAR (openid/connect)

[peppelinux]

New issue 1701: fix: [Federation] trust_chain parameter in authz request without PAR and JAR
https://bitbucket.org/openid/connect/issues/1701/fix-federation-trust_chain-parameter-in

Giuseppe De Marco:

In the explanatory text of the parameter trust\_chain, in the authorization request, we say that 

> Due to the large size of a Trust Chain it could be necessary to use a [JWT-Secured Authorization Request \(JAR\)](https://openid.bitbucket.io/connect/openid-connect-federation-1_0.html#RFC9101) \[[RFC9101](https://openid.bitbucket.io/connect/openid-connect-federation-1_0.html#RFC9101)\] or [Pushed Authorization Request](https://openid.bitbucket.io/connect/openid-connect-federation-1_0.html#RFC9126) \[[RFC9126](https://openid.bitbucket.io/connect/openid-connect-federation-1_0.html#RFC9126)\].

JAR and PAR ar not necessary because OIDC Core 1.0 allow the HTTP method POST in the Authorization Request  
  
[https://openid.net/specs/openid-connect-core-1\_0.html#AuthRequest](https://openid.net/specs/openid-connect-core-1_0.html#AuthRequest)

Responsible: Giuseppe De Marco