An Anonymous ID-based Encryption Revisited

Zhengjun Cao

Paper 2010/065

An Anonymous ID-based Encryption Revisited

Zhengjun Cao

Abstract

In 2006, Boyen and Waters proposed an anonymous ID-based encryption. It is impressive that in the scheme the system secret key is a tuple of five numbers. The user's secret key is also a tuple of five elements. The authors did not explain why it should introduce so many parameters. In this paper, we simulate a general attempt to attack the scheme. It shows us which parameters are essential to the scheme and which parameters can be reasonably discarded. Based on the analysis we present a simplified version and an efficient version of the Boyen-Waters scheme. The analyzing technique developed in this paper is helpful to better other cryptographic protocols.

Metadata

Available format(s): PDF
Category: Cryptographic protocols
Publication info: Published elsewhere. Unknown where it was published
Keywords: Anonymous ID-based encryption Smooth Transition
Contact author(s): zhencao @ ulb ac be
History: 2010-02-08: received
Short URL: https://ia.cr/2010/065
License: CC BY

BibTeX

@misc{cryptoeprint:2010/065,
      author = {Zhengjun Cao},
      title = {An Anonymous {ID}-based Encryption Revisited},
      howpublished = {Cryptology {ePrint} Archive, Paper 2010/065},
      year = {2010},
      url = {https://eprint.iacr.org/2010/065}
}