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Add security consideration: Extending a type doesn't imply authorization to issue the type #302

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danielfett opened this issue Mar 18, 2025 · 0 comments

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danielfett commented Mar 18, 2025

Example:

there's a european PID type "urn:ec.eu.x.y.z" and a national type "urn:de.bla" that extends "urn:ec.eu.x.y.z"
a rogue issuer issues a credential "urn:attacker" that extends either "urn:ec.eu.x.y.z" or "urn:ec.eu.x.y.z"
it is now important that verifiers/wallets don't accept these credentials. the fact that someone issued a credential extending a known type does not imply that they are allowed to do so (or that they are a valid issuer at all)

This should be captured in a security consideration, ideally also in processing rules.

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