Analysis of improved signcryption scheme with key privacy
Information Processing Letters
A novel identity-based multi-signcryption scheme
Computer Communications
Signcryption Scheme in Multi-user Setting without Random Oracles
IWSEC '08 Proceedings of the 3rd International Workshop on Security: Advances in Information and Computer Security
Forgery of Provable Secure Short Signcryption Scheme
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IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
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APWeb/WAIM '09 Proceedings of the Joint International Conferences on Advances in Data and Web Management
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INDOCRYPT '09 Proceedings of the 10th International Conference on Cryptology in India: Progress in Cryptology
An efficient signcryption scheme with key privacy and its extension to ring signcryption
Journal of Computer Security - The 2007 European PKI Workshop: Theory and Practice (EuroPKI'07)
An efficient signcryption scheme with key privacy
EuroPKI'07 Proceedings of the 4th European conference on Public Key Infrastructure: theory and practice
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In this paper, we analyse the signcryption scheme proposed by Libert and Quisquater in 2004 and show that their scheme does not meet the requirements as claimed in their paper in PKC'2004, such as, semantically secure against adaptive chosen ciphtertext attack, ciphertext anonymity and key invisibility.