EPID with Efficient Proof of Non-Revocation
Olivier Sanders · Proceedings of the 2022 ACM on Asia Conference on Computer and Communications Security · 2022
EPID systems are anonymous authentication mechanisms which are standardized by ISO/IEC and massively deployed in Intel processors. They are related to the large family of privacy-preserving signatures but differ in that they provide a very pragmatic way of revoking members. Concretely, a member ℘ can be revoked by simply placing one of its signatures in a so-called signature revocation list SRL. Once this is done, every signer will have to include in its future signatures a proof that it has not generated any element of SRL, which implicitly revokes ℘.