CRYPTO '02 Proceedings of the 22nd Annual International Cryptology Conference on Advances in Cryptology
Threshold Ring Signatures and Applications to Ad-hoc Groups
CRYPTO '02 Proceedings of the 22nd Annual International Cryptology Conference on Advances in Cryptology
ASIACRYPT '01 Proceedings of the 7th International Conference on the Theory and Application of Cryptology and Information Security: Advances in Cryptology
ID-Based Blind Signature and Ring Signature from Pairings
ASIACRYPT '02 Proceedings of the 8th International Conference on the Theory and Application of Cryptology and Information Security: Advances in Cryptology
1-out-of-n Signatures from a Variety of Keys
ASIACRYPT '02 Proceedings of the 8th International Conference on the Theory and Application of Cryptology and Information Security: Advances in Cryptology
Designated verifier proofs and their applications
EUROCRYPT'96 Proceedings of the 15th annual international conference on Theory and application of cryptographic techniques
EUROCRYPT'03 Proceedings of the 22nd international conference on Theory and applications of cryptographic techniques
Universal designated verifier signature proof (or how to efficiently prove knowledge of a signature)
ASIACRYPT'05 Proceedings of the 11th international conference on Theory and Application of Cryptology and Information Security
Short signature and universal designated verifier signature without random oracles
ACNS'05 Proceedings of the Third international conference on Applied Cryptography and Network Security
Proxy Ring Signature: Formal Definitions, Efficient Construction and New Variant
Computational Intelligence and Security
Efficient Deniable Authentication for Signatures
ACNS '09 Proceedings of the 7th International Conference on Applied Cryptography and Network Security
Universal Designated Verifier Signatures with Threshold-Signers
IWSEC '09 Proceedings of the 4th International Workshop on Security: Advances in Information and Computer Security
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This paper first introduces the concept of universal designated verifier ring signature (UDVRS), which not only allows members of a group to sign messages on behalf of the group without revealing their identities, but also allows any holder of the signature (not necessary the signer) to designate the signature to any designated verifier. According to whether the designator has a registered public key, two kinds of UDVRS are proposed. In order to distinguish the two types of UDVRS, we call it UDVRS Proof (UDVRSP) if the designator has not a registered public key, and this protocol is interactive. We give the formal security definitions and notions of UDVRS and UDVRSP. Then, we propose a UDVRS and a UDVRSP scheme, with rigorous security proofs without random oracles.