[VC Security & Trust Document] Discuss linked credentials?

[Macke]

Imported from AB/Connect bitbucket: https://bitbucket.org/openid/connect/issues/2013

Original Reporter: danielfett

Giuseppe De Marco

2023-03-06

this may introduce the concept of linked credentials, where a VC is not secure without another, that has the holder binding or is verifiable with a crypto method. The linked VC are linked with a claim

the security of the solutions must impose that the claim used for linking is uniquely assigned to the subject of the VCs. If I link two VC with my given name this is not secure at all, differently if I use a tax payer identification number or an eIDAS personal unique id