Separability and Efficiency for Generic Group Signature Schemes
CRYPTO '99 Proceedings of the 19th Annual International Cryptology Conference on Advances in Cryptology
Provably Secure and Practical Identification Schemes and Corresponding Signature Schemes
CRYPTO '92 Proceedings of the 12th Annual International Cryptology Conference on Advances in Cryptology
CRYPTO '98 Proceedings of the 18th Annual International Cryptology Conference on Advances in Cryptology
A Practical Public Key Cryptosystem Provably Secure Against Adaptive Chosen Ciphertext Attack
CRYPTO '98 Proceedings of the 18th Annual International Cryptology Conference on Advances in Cryptology
Key-Insulated Public Key Cryptosystems
EUROCRYPT '02 Proceedings of the International Conference on the Theory and Applications of Cryptographic Techniques: Advances in Cryptology
A Practical and Provably Secure Coalition-Resistant Group Signature Scheme
CRYPTO '00 Proceedings of the 20th Annual International Cryptology Conference on Advances in Cryptology
Non-Malleable Non-Interactive Zero Knowledge and Adaptive Chosen-Ciphertext Security
FOCS '99 Proceedings of the 40th Annual Symposium on Foundations of Computer Science
Group signatures with verifier-local revocation
Proceedings of the 11th ACM conference on Computer and communications security
On the Impossibility of Basing Identity Based Encryption on Trapdoor Permutations
FOCS '08 Proceedings of the 2008 49th Annual IEEE Symposium on Foundations of Computer Science
EUROCRYPT '09 Proceedings of the 28th Annual International Conference on Advances in Cryptology: the Theory and Applications of Cryptographic Techniques
On the Theoretical Gap between Group Signatures with and without Unlinkability
AFRICACRYPT '09 Proceedings of the 2nd International Conference on Cryptology in Africa: Progress in Cryptology
EUROCRYPT'91 Proceedings of the 10th annual international conference on Theory and application of cryptographic techniques
Full-domain subgroup hiding and constant-size group signatures
PKC'07 Proceedings of the 10th international conference on Practice and theory in public-key cryptography
EUROCRYPT'03 Proceedings of the 22nd international conference on Theory and applications of cryptographic techniques
Fully anonymous group signatures without random oracles
ASIACRYPT'07 Proceedings of the Advances in Crypotology 13th international conference on Theory and application of cryptology and information security
Efficient non-interactive proof systems for bilinear groups
EUROCRYPT'08 Proceedings of the theory and applications of cryptographic techniques 27th annual international conference on Advances in cryptology
Structure-preserving signatures and commitments to group elements
CRYPTO'10 Proceedings of the 30th annual conference on Advances in cryptology
Get shorty via group signatures without encryption
SCN'10 Proceedings of the 7th international conference on Security and cryptography for networks
Simulation-sound NIZK proofs for a practical language and constant size group signatures
ASIACRYPT'06 Proceedings of the 12th international conference on Theory and Application of Cryptology and Information Security
Dynamic fully anonymous short group signatures
VIETCRYPT'06 Proceedings of the First international conference on Cryptology in Vietnam
An efficient group signature scheme from bilinear maps
ACISP'05 Proceedings of the 10th Australasian conference on Information Security and Privacy
Foundations of group signatures: the case of dynamic groups
CT-RSA'05 Proceedings of the 2005 international conference on Topics in Cryptology
Tag-KEM/DEM: a new framework for hybrid encryption and a new analysis of kurosawa-desmedt KEM
EUROCRYPT'05 Proceedings of the 24th annual international conference on Theory and Applications of Cryptographic Techniques
Group signatures with efficient concurrent join
EUROCRYPT'05 Proceedings of the 24th annual international conference on Theory and Applications of Cryptographic Techniques
PKC'10 Proceedings of the 13th international conference on Practice and Theory in Public Key Cryptography
Compact group signatures without random oracles
EUROCRYPT'06 Proceedings of the 24th annual international conference on The Theory and Applications of Cryptographic Techniques
Chosen-Ciphertext security from tag-based encryption
TCC'06 Proceedings of the Third conference on Theory of Cryptography
A group signature scheme with unbounded message-dependent opening
Proceedings of the 8th ACM SIGSAC symposium on Information, computer and communications security
Risk visualization and alerting system: architecture and proof-of-concept implementation
Proceedings of the first international workshop on Security in embedded systems and smartphones
Hi-index | 0.00 |
This paper introduces a new capability of the group signature, called message-dependent opening. It is intended to weaken the higher trust put on an opener, that is, no anonymity against an opener is provided by ordinary group signature. In a group signature system with message-dependent opening (GS-MDO), in addition to the opener, we set up the admitter which is not able to open any user's identity but admits the opener to open signatures by specifying messages whose signatures should be opened. For any signature whose corresponding message is not specified by the admitter, the opener cannot extract the signer's identity from it. In this paper, we present formal definitions and constructions of GS-MDO. Furthermore, we also show that GS-MDO implies identity-based encryption, and thus for designing a GS-MDO scheme, identity-based encryption is crucial. Actually, we propose a generic construction of GS-MDO from identity-based encryption and adaptive NIZK proofs, and its specific instantiation from the Groth-Sahai proof system by constructing a new (k-resilient) identity-based encryption scheme which is compatible to the Groth-Sahai proof.