Handbook of Applied Cryptography
Handbook of Applied Cryptography
Proceedings of the 17th Annual International Cryptology Conference on Advances in Cryptology
CRYPTO '97 Proceedings of the 17th Annual International Cryptology Conference on Advances in Cryptology
Group Signatures and Their Relevance to Privacy-Protecting Off-Line Electronic Cash Systems
ACISP '99 Proceedings of the 4th Australasian Conference on Information Security and Privacy
An Online Public Auction Protocol Protecting Bidder Privacy
ACISP '00 Proceedings of the 5th Australasian Conference on Information Security and Privacy
Co-operatively Formed Group Signatures
CT-RSA '02 Proceedings of the The Cryptographer's Track at the RSA Conference on Topics in Cryptology
Dynamic Accumulators and Application to Efficient Revocation of Anonymous Credentials
CRYPTO '02 Proceedings of the 22nd Annual International Cryptology Conference on Advances in Cryptology
Society and Group Oriented Cryptography: A New Concept
CRYPTO '87 A Conference on the Theory and Applications of Cryptographic Techniques on Advances in Cryptology
Efficient Group Signature Schemes for Large Groups (Extended Abstract)
CRYPTO '97 Proceedings of the 17th Annual International Cryptology Conference on Advances in Cryptology
A Group Signature Scheme with Improved Efficiency
ASIACRYPT '98 Proceedings of the International Conference on the Theory and Applications of Cryptology and Information Security: Advances in Cryptology
How to Convert any Digital Signature Scheme into a Group Signature Scheme
Proceedings of the 5th International Workshop on Security Protocols
Some Open Issues and New Directions in Group Signatures
FC '99 Proceedings of the Third International Conference on Financial Cryptography
Efficient Revocation in Group Signatures
PKC '01 Proceedings of the 4th International Workshop on Practice and Theory in Public Key Cryptography: Public Key Cryptography
A Practical and Provably Secure Coalition-Resistant Group Signature Scheme
CRYPTO '00 Proceedings of the 20th Annual International Cryptology Conference on Advances in Cryptology
Group signatures with verifier-local revocation
Proceedings of the 11th ACM conference on Computer and communications security
Implementing group signature schemes with smart cards
CARDIS'02 Proceedings of the 5th conference on Smart Card Research and Advanced Application Conference - Volume 5
Efficient and generalized group signatures
EUROCRYPT'97 Proceedings of the 16th annual international conference on Theory and application of cryptographic techniques
EUROCRYPT'91 Proceedings of the 10th annual international conference on Theory and application of cryptographic techniques
Quasi-efficient revocation of group signatures
FC'02 Proceedings of the 6th international conference on Financial cryptography
EUROCRYPT'03 Proceedings of the 22nd international conference on Theory and applications of cryptographic techniques
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Group signatures allow a group member to sign messages anonymously on behalf of the group and, if needed, a group authority is able to identify the signer. In most applications, groups are dynamic and the number of arrivals and departures is non-negligible. Group signature schemes must take into account this situation and deal with member revocation. Even if group signature schemes have been intensively investigated during the last decade, few are applicable in low resource context. Among them, the simplest and most efficient has been proposed by Canard and Girault at Cardis 2002 and involves the smart card as security proxy. This solution has many advantages; however, there is a need to be connected to a group authority in order to sign or to verify the signature. Clearly, this is a drawback in embedded security for mobile applications. Based on a re-assessment of the notion of group signature, we propose an improvement of the Canard-Girault scheme allowing to perform signature and verification both off-line. In particular, we introduce the notion of risk-management for group signature schemes, which leads us to a novel approach of the member revocation problem.