Abstract. We construct the first O(1)-size designated confirmer signatures (DCS) with security in the state-of-the-art model of Camenisch and Michels, Eurocrypt 2000, without rando...
sion of an extended abstract published in Proceedings of Asiacrypt 2010, Springer-Verlag, 2010. Available from the IACR Cryptology ePrint Archive as Report 2010/474. Beginning wit...
Sarah Meiklejohn, Hovav Shacham, David Mandell Fre...
Group signatures have recently become important for enabling privacy-preserving attestation in projects such as Microsoft's ngscb effort (formerly Palladium). Revocation is c...
In this paper we formalize the notion of a ring signature, which makes it possible to specify a set of possible signers without revealing which member actually produced the signatu...
We present an identity-based cryptosystem that features fully anonymous ciphertexts and hierarchical key delegation. We give a proof of security in the standard model, based on the...