Identity-based cryptosystems and signature schemes
Proceedings of CRYPTO 84 on Advances in cryptology
Efficient verifiable encryption (and fair exchange) of digital signatures
CCS '99 Proceedings of the 6th ACM conference on Computer and communications security
Efficient Identity Based Signature Schemes Based on Pairings
SAC '02 Revised Papers from the 9th Annual International Workshop on Selected Areas in Cryptography
Identity-Based Encryption from the Weil Pairing
CRYPTO '01 Proceedings of the 21st Annual International Cryptology Conference on Advances in Cryptology
Short Signatures from the Weil Pairing
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
Some Open Issues and New Directions in Group Signatures
FC '99 Proceedings of the Third International Conference on Financial 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
Constructing fair-exchange protocols for E-commerce via distributed computation of RSA signatures
Proceedings of the twenty-second annual symposium on Principles of distributed computing
EUROCRYPT'91 Proceedings of the 10th annual international conference on Theory and application of cryptographic techniques
Efficient ID-based blind signature and proxy signature from bilinear pairings
ACISP'03 Proceedings of the 8th Australasian conference on Information security and privacy
Aggregate and verifiably encrypted signatures from bilinear maps
EUROCRYPT'03 Proceedings of the 22nd international conference on Theory and applications of cryptographic techniques
EUROCRYPT'03 Proceedings of the 22nd international conference on Theory and applications of cryptographic techniques
An ID-Based verifiable encrypted signature scheme based on hess’s scheme
CISC'05 Proceedings of the First SKLOIS conference on Information Security and Cryptology
Efficient group signatures from bilinear pairing
CISC'05 Proceedings of the First SKLOIS conference on Information Security and Cryptology
Optimistic fair exchange of digital signatures
IEEE Journal on Selected Areas in Communications
A privacy problem on Hu-Huang's proxy key generation protocol
Computer Standards & Interfaces
Strong unforgeability in group signature schemes
Computer Standards & Interfaces
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The bilinearity of pairings allows efficient signature verification for signature schemes based on discrete logarithm type problem and often provides useful additional functionalities to signature schemes. In recent years, bilinear pairings have been widely used to create signature schemes. But the bilinearity can also be an attack point in uncarefully designed protocols. We cryptanalyze two signature schemes presented at CISC '05, Cheng et al.'s group signature scheme and Gu et al.'s ID-based verifiably encrypted signature scheme, both based on bilinear pairings. We show that their improper uses of a bilinear pairing lead to untraceable group signatures for Cheng et al.'s group signature scheme and universally forgeable signatures for Gu et al.'s ID-based verifiably encrypted signature scheme.