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On the Security of a Certificateless Public-Key Encryption
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Abstract: | Certificateless public-key cryptosystem is a recently proposed attractive paradigm using public key cryptosystem, which avoids the key escrow inherent in identity-based public-key cryptosystems, and does not need certificates to generate trust in public keys. In 2005, Al-Riyami and Paterson proposed a new certificateless public-key encryption scheme and proved its security in the random oracle model. This paper shows that their scheme is vulnerable to adaptive chosen ciphertext attacks, and presents a countermeasure to overcome such a security flaw. |
BibTeX
@misc{eprint-2005-12759, title={On the Security of a Certificateless Public-Key Encryption}, booktitle={IACR Eprint archive}, keywords={public-key cryptography / certificateless public key encryption, cryptanalysis}, url={http://eprint.iacr.org/2005/426}, note={ zfzhang@is.iscas.ac.cn 13110 received 23 Nov 2005}, author={Zhenfeng Zhang and Dengguo Feng}, year=2005 }