Identity-based cryptosystems and signature schemes
Proceedings of CRYPTO 84 on Advances in cryptology
Random oracles are practical: a paradigm for designing efficient protocols
CCS '93 Proceedings of the 1st ACM conference on Computer and communications security
Geometric secret sharing schemes and their duals
Designs, Codes and Cryptography
The random oracle methodology, revisited (preliminary version)
STOC '98 Proceedings of the thirtieth annual ACM symposium on Theory of computing
Communications of the ACM
Cryptography: Theory and Practice
Cryptography: Theory and Practice
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
CRYPTO '93 Proceedings of the 13th Annual International Cryptology Conference on Advances in Cryptology
Proofs of Partial Knowledge and Simplified Design of Witness Hiding Protocols
CRYPTO '94 Proceedings of the 14th Annual International Cryptology Conference on 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
Robust threshold DSS signatures
EUROCRYPT'96 Proceedings of the 15th annual international conference on Theory and application of cryptographic techniques
Practical threshold signatures
EUROCRYPT'00 Proceedings of the 19th international conference on Theory and application of cryptographic techniques
Ring signature schemes for general ad-hoc access structures
ESAS'04 Proceedings of the First European conference on Security in Ad-hoc and Sensor Networks
Identity based threshold ring signature
ICISC'04 Proceedings of the 7th international conference on Information Security and Cryptology
On the transferability of private signatures
Information Sciences: an International Journal
A strong designated verifier ring signcryption scheme
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
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In a distributed ring signature scheme, a subset of users cooperate to compute a distributed anonymous signature on a message, on behalf of a family of possible signing subsets. The receiver can verify that the signature comes from a subset of the ring, but he cannot know which subset has actually signed. In this work we use the concept of dual access structures to construct a distributed ring signature scheme which works with vector space families of possible signing subsets. The length of each signature is linear on the number of involved users, which is desirable for some families with many possible signing subsets. The scheme achieves the desired properties of correctness, anonymity and unforgeability. We analyze in detail the case in which our scheme runs in an identity-based scenario, where public keys of the users can be derived from their identities. This fact avoids the necessity of digital certificates, and therefore allows more efficient implementations of such systems. But our scheme can be extended to work in more general scenarios, where users can have different types of keys.