Identity-based cryptosystems and signature schemes
Proceedings of CRYPTO 84 on Advances in cryptology
Random oracles are practical: a paradigm for designing efficient protocols
CCS '93 Proceedings of the 1st ACM conference on Computer and communications security
Digital Signcryption or How to Achieve Cost(Signature & Encryption)
CRYPTO '97 Proceedings of the 17th Annual International Cryptology Conference on Advances in Cryptology
On the Security of Joint Signature and Encryption
EUROCRYPT '02 Proceedings of the International Conference on the Theory and Applications of Cryptographic Techniques: Advances in Cryptology
The random oracle methodology, revisited
Journal of the ACM (JACM)
Simulatability and security of certificateless threshold signatures
Information Sciences: an International Journal
ASIACCS '07 Proceedings of the 2nd ACM symposium on Information, computer and communications security
Malicious KGC attacks in certificateless cryptography
ASIACCS '07 Proceedings of the 2nd ACM symposium on Information, computer and communications security
Certificateless threshold cryptosystem secure against chosen-ciphertext attack
Information Sciences: an International Journal
Certificateless undeniable signature scheme
Information Sciences: an International Journal
Generic Constructions of Identity-Based and Certificateless KEMs
Journal of Cryptology
Proceedings of the 2008 ACM symposium on Information, computer and communications security
Secure public-key encryption scheme without random oracles
Information Sciences: an International Journal
A survey of certificateless encryption schemes and security models
International Journal of Information Security
Identity based signcryption scheme without random oracles
Computer Standards & Interfaces
Breaking the short certificateless signature scheme
Information Sciences: an International Journal
An Improved Certificateless Signature Scheme Secure in the Standard Model
Fundamenta Informaticae
A forward-secure public-key encryption scheme
EUROCRYPT'03 Proceedings of the 22nd international conference on Theory and applications of cryptographic techniques
Two notes on the security of certificateless signatures
ProvSec'07 Proceedings of the 1st international conference on Provable security
Certificateless encryption schemes strongly secure in the standard model
PKC'08 Proceedings of the Practice and theory in public key cryptography, 11th international conference on Public key cryptography
On the security of certificateless signature schemes from asiacrypt 2003
CANS'05 Proceedings of the 4th international conference on Cryptology and Network Security
Improved identity-based signcryption
PKC'05 Proceedings of the 8th international conference on Theory and Practice in Public Key Cryptography
Efficient identity-based encryption without random oracles
EUROCRYPT'05 Proceedings of the 24th annual international conference on Theory and Applications of Cryptographic Techniques
On constructing certificateless cryptosystems from identity based encryption
PKC'06 Proceedings of the 9th international conference on Theory and Practice of Public-Key Cryptography
Efficient identity-based signatures secure in the standard model
ACISP'06 Proceedings of the 11th Australasian conference on Information Security and Privacy
Key replacement attack against a generic construction of certificateless signature
ACISP'06 Proceedings of the 11th Australasian conference on Information Security and Privacy
Certificateless threshold signature scheme from bilinear maps
Information Sciences: an International Journal
Forward-secure identity-based signature: Security notions and construction
Information Sciences: an International Journal
Cryptanalysis of a certificateless signcryption scheme in the standard model
Information Sciences: an International Journal
Fair E-payment protocol based on certificateless signature and authenticated key exchange
ICICA'10 Proceedings of the First international conference on Information computing and applications
Certificateless multi-proxy signature
Computer Communications
Tabu search based multi-watermarks embedding algorithm with multiple description coding
Information Sciences: an International Journal
Fuzzy biometric signcryption scheme with bilinear pairings in the standard model
PAISI'10 Proceedings of the 2010 Pacific Asia conference on Intelligence and Security Informatics
Towards confidentiality of ID-Based signcryption schemes under without random oracle model
PAISI'10 Proceedings of the 2010 Pacific Asia conference on Intelligence and Security Informatics
Certificate-based signcryption with enhanced security features
Computers & Mathematics with Applications
On security of a certificateless signcryption scheme
Information Sciences: an International Journal
Certificateless threshold signature secure in the standard model
Information Sciences: an International Journal
Cryptanalysis and improvement of a certificateless threshold signature secure in the standard model
Information Sciences: an International Journal
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Certificateless public key signcryption scheme is an important cryptographic primitive in cryptography. Barbosa and Farshim proposed a certificateless signcryption scheme. However, their construction is proven to be secure in the random oracle model but not the standard model, and the scheme is also vunlerable to the malicious-but-passive key generation center (KGC) attacks. To overcome these disadvantages, we introduce a formal security model for certificateless signcryption schemes secure against the malicious-but-passive KGC attacks and propose a novel certificateless signcryption scheme. The proposed certificateless signcryption scheme is proven to be IND-CCA2 secure under the decisional Bilinear Diffie-Hellman intractability assumption without using the random oracles. The proposed scheme is also proven to be existentially unforgeable under the computational Diffie-Hellman intractability assumptions. Furthermore, performance analysis shows that the proposed scheme is efficient and practical.