EUDIW Use Case Classes

	A	B	C	D	E	F	G	H	I	J	K	L	M	N
1	Privacy Label	Use Case Class	Short description	Linkability per RP	Linkability across RPs	Linkability RP and issuer	Proof of membership in non-ID attributes	Cross- country matching	Offline wallet/prover support	Offline RP support	Revocation handling	Delegatable	Cryptography	Hardware dependency
2	D	Uniquely Identified: Regulated (U-R)	Unique identification in regulated/government scenarios (PID usage)	yes (always)	yes (always)	yes (always)	no?	yes?	yes?	no?	required	yes?	classical signatures?	Issuer: ECDSA Wallet: ECDSA
3	C	Uniquely Identified: Unregulated Business Requirement (U-U)	Unique identification with in unregulated scenarios but with a clear business need to refer to a government-backed proof of name	yes	yes (probabilistically), but prevent on cryptography/signature level	?	yes	?	yes	yes?	use case specific	?	classical single-show signatures?	Issuer: ECDSA Wallet: ECDSA
4	B	Pseudonymous (P)	Unique identifier for recurring interactions within the same RP, but without required linking to real name	yes	no	ideally no	yes	N/A	yes	yes?		?	anonymous credentials	+ offline hardware support for wallet device cryptography primitives support depending on ZKP scheme
5	A	Anonymous (A)	No identification across recurring interactions, but only a generic anonymous proof of membership for every interaction	no	no	no	yes	N/A	yes	yes?		?	anonymous credentials (“fancy” signatures and/or ZKPs)	+ offline hardware support for wallet device cryptography primitives support depending on ZKP scheme
6		Business-to-X (B)	Interactions by organizations instead of individuals as provers, but with privacy requirements. Businesses are uniquely identified, but some of their data should be kept confidential while proving properties over it.	yes	yes	yes	yes	N/A?	no	no	yes	yes?	anonymous credentials (“fancy” signatures and/or ZKPs)
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