Practical forward secure group signature schemes
CCS '01 Proceedings of the 8th ACM conference on Computer and Communications Security
Dynamic Accumulators and Application to Efficient Revocation of Anonymous Credentials
CRYPTO '02 Proceedings of the 22nd Annual International Cryptology Conference on 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
Group signatures with verifier-local revocation
Proceedings of the 11th ACM conference on Computer and communications security
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
Verifier-Local revocation group signature schemes with backward unlinkability from bilinear maps
ASIACRYPT'05 Proceedings of the 11th international conference on Theory and Application of Cryptology and Information Security
Universally convertible directed signatures
ASIACRYPT'05 Proceedings of the 11th international conference on Theory and Application of Cryptology and Information Security
An efficient group signature scheme from bilinear maps
ACISP'05 Proceedings of the 10th Australasian conference on Information Security and Privacy
A Short Verifier-Local Revocation Group Signature Scheme with Backward Unlinkability
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Revocable Group Signature Schemes with Constant Costs for Signing and Verifying
Irvine Proceedings of the 12th International Conference on Practice and Theory in Public Key Cryptography: PKC '09
Group Signatures with Verifier-Local Revocation and Backward Unlinkability in the Standard Model
CANS '09 Proceedings of the 8th International Conference on Cryptology and Network Security
On the efficiency and security of pairing-based protocols in the type 1 and type 4 settings
WAIFI'10 Proceedings of the Third international conference on Arithmetic of finite fields
Plaintext-Checkable encryption
CT-RSA'12 Proceedings of the 12th conference on Topics in Cryptology
Group signature with constant revocation costs for signers and verifiers
CANS'11 Proceedings of the 10th international conference on Cryptology and Network Security
A revocable group signature scheme with the property of hiding the number of revoked users
ICISC'11 Proceedings of the 14th international conference on Information Security and Cryptology
| Hi-index | 0.00 |
Previously Verifier-Local Revocation (VLR) group signature schemes from bilinear maps were proposed. In VLR schemes, only verifiers are involved in the revocation of a member, while signers are not involved in the revocation. Thus, the schemes are suitable for mobile environments. Furthermore, the previously proposed schemes satisfy an important property, the backward unlinkability. It means that even after a member is revoked, signatures produced by the member before the revocation remain anonymous. This property is needed in case a member leaves voluntarily or in case of a stolen key. In this paper an improved scheme is proposed, where the group signatures are shorter. This is achieved using a different assumption, DLDH assumption, and improving zero-knowledge proofs in the group signatures. The length of the proposed group signatures is about 53% of that of the previous ones.