Secure Certificateless Public Key Encryption without Redundancy

Yinxia Sun; Futai Zhang

eprint.iacr.org will be offline for approximately an hour for routine maintenance at 11pm UTC on Tuesday, April 16. We lost some data between April 12 and April 14, and some authors have been notified that they need to resubmit their papers.

Paper 2008/487

Secure Certificateless Public Key Encryption without Redundancy

Yinxia Sun and Futai Zhang

Abstract

Certificateless public key cryptography was introduced to solve the key escrow problem in identity based cryptography while enjoying the most attractive {\em certificateless} property. In this paper, we present the first {\em secure} certificateless public key encryption (CLPKE) scheme {\em without redundancy}. Our construction provides optimal bandwidth and a quite efficient decryption process among all the existing CLPKE schemes. It is provably secure against adaptive chosen ciphertext attacks in the random oracle model under a slightly stronger assumption.

Metadata

Available format(s): PDF
Category: Public-key cryptography
Publication info: Published elsewhere. Unknown where it was published
Keywords: certificateless public key encryption redundancy short ciphertext bilinear pairing random oracle.
Contact author(s): bela_suno @ 163 com
History: 2009-03-24: last of 2 revisions; 2008-11-21: received; See all versions
Short URL: https://ia.cr/2008/487
License: CC BY

BibTeX

@misc{cryptoeprint:2008/487,
      author = {Yinxia Sun and Futai Zhang},
      title = {Secure Certificateless Public Key Encryption without Redundancy},
      howpublished = {Cryptology ePrint Archive, Paper 2008/487},
      year = {2008},
      note = {\url{https://eprint.iacr.org/2008/487}},
      url = {https://eprint.iacr.org/2008/487}
}