Identity-based cryptosystems and signature schemes
Proceedings of CRYPTO 84 on Advances in cryptology
How to construct efficient signcryption schemes on elliptic curves
Information Processing Letters
New Signcryption Schemes Based on KCDSA
ICISC '01 Proceedings of the 4th International Conference Seoul on Information Security and Cryptology
Identity-Based Encryption from the Weil Pairing
CRYPTO '01 Proceedings of the 21st Annual International Cryptology Conference on Advances in Cryptology
A "Paradoxical" Indentity-Based Signature Scheme Resulting from Zero-Knowledge
CRYPTO '88 Proceedings of the 8th Annual International Cryptology Conference on Advances in Cryptology
Digital Signcryption or How to Achieve Cost(Signature & Encryption)
CRYPTO '97 Proceedings of the 17th Annual International Cryptology Conference on Advances in Cryptology
Encrypted Message Authentication by Firewalls
PKC '99 Proceedings of the Second International Workshop on Practice and Theory in Public Key Cryptography
Formal Proofs for the Security of Signcryption
PKC '02 Proceedings of the 5th International Workshop on Practice and Theory in Public Key Cryptosystems: Public Key Cryptography
Identity based signcryption scheme without random oracles
Computer Standards & Interfaces
New DSA-verifiable signcryption schemes
ICISC'02 Proceedings of the 5th international conference on Information security and cryptology
Two birds one stone: signcryption using RSA
CT-RSA'03 Proceedings of the 2003 RSA conference on The cryptographers' track
Efficient identity-based encryption without random oracles
EUROCRYPT'05 Proceedings of the 24th annual international conference on Theory and Applications of Cryptographic Techniques
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Signcryption is a cryptographic primitive that performs digital signature and public key encryption simultaneously, at lower computational costs and communication overhead than signing and encrypting separately. Recently, Yu et al. proposed an identity based signcryption scheme with a claimed proof of security. We show that their scheme is not secure even against a chosen-plaintext attack. (This work is supported by National Natural Science Foundation of China under Grant No. 61003230 and China Postdoctoral Science Foundation under Grant No. 20100480130.)