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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
-
CC BY
