An Efficient Certificateless Encryption Scheme in the Standard Model

Authors:
Hua Guo;Xiyong Zhang;Yi Mu;Zhoujun Li
Affiliations:
-;-;-;-
Venue:
NSS '09 Proceedings of the 2009 Third International Conference on Network and System Security
Year:
2009

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Cryptanalysis and improvement of a certificateless encryption scheme in the standard model

Frontiers of Computer Science: Selected Publications from Chinese Universities

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Abstract

We propose an efficient Certificateless Public Key Encryption (CL-PKE) scheme which is provably secure against chosen ciphertext attacks without random oracles. Our scheme is more computationally efficient than the existing schemes and provides the shortest public key length compared to other existing CL-PKEs with random oracles. We also propose a practical Self-Generated-Certificate Encryption (SGC-PKE) scheme based on our CL-PKE scheme. One of merits of such cryptographic systems is that it can be applied to countermeasure ``Denial-of-Decryption (DoD) Attacks" that is inherent in CL-PKE.