Paper 2005/426

On the Security of a Certificateless Public-Key Encryption

Zhenfeng Zhang and Dengguo Feng

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.

Metadata
Available format(s)
PDF
Category
Public-key cryptography
Publication info
Published elsewhere. Unknown where it was published
Keywords
certificateless public key encryptioncryptanalysis
Contact author(s)
zfzhang @ is iscas ac cn
History
2005-11-23: received
Short URL
https://ia.cr/2005/426
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2005/426,
      author = {Zhenfeng Zhang and Dengguo Feng},
      title = {On the Security of a Certificateless Public-Key Encryption},
      howpublished = {Cryptology ePrint Archive, Paper 2005/426},
      year = {2005},
      note = {\url{https://eprint.iacr.org/2005/426}},
      url = {https://eprint.iacr.org/2005/426}
}
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