Identity-based cryptosystems and signature schemes
Proceedings of CRYPTO 84 on Advances in cryptology
A digital signature scheme secure against adaptive chosen-message attacks
SIAM Journal on Computing - Special issue on cryptography
Random oracles are practical: a paradigm for designing efficient protocols
CCS '93 Proceedings of the 1st ACM conference on Computer and communications security
CRYPTO '93 Proceedings of the 13th annual international cryptology conference on Advances in cryptology
The random oracle methodology, revisited (preliminary version)
STOC '98 Proceedings of the thirtieth annual ACM symposium on Theory of computing
CRYPTO '02 Proceedings of the 22nd Annual International Cryptology Conference on Advances in Cryptology
Separating Random Oracle Proofs from Complexity Theoretic Proofs: The Non-committing Encryption Case
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
Efficient and generalized group signatures
EUROCRYPT'97 Proceedings of the 16th annual international conference on Theory and application of cryptographic techniques
Distributed Ring Signatures from General Dual Access Structures
Designs, Codes and Cryptography
Identity-based ring signatures from RSA
Theoretical Computer Science
On the transferability of private signatures
Information Sciences: an International Journal
How to leak a secret: theory and applications of ring signatures
Theoretical Computer Science
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In a ring signature scheme for ad-hoc access structures, members of a set can freely choose a family of sets including their own set. Then they use their secret keys and the public keys of the other users to compute a signature which enjoys two properties: the external verifier is convinced that all members of some set in the access structure have cooperated to compute the signature; but he has no information about which is the set whose members have actually signed the message. In this work we propose such a scheme, based on the ideas of a ring signature scheme for discrete logarithm scenarios. The scheme allows the choice of any general access structure, not only threshold ones, as it happened with previous constructions. We prove that the resulting scheme is anonymous and existentially unforgeable under chosen message attacks, assuming that the Discrete Logarithm problem is hard to solve.