On the Security of a Bidirectional Proxy Re-Encryption Scheme from PKC 2010

Jian Weng; Yunlei Zhao

Paper 2010/319

On the Security of a Bidirectional Proxy Re-Encryption Scheme from PKC 2010

Jian Weng and Yunlei Zhao

Abstract

In PKC 2010, Matsuda, Nishimaki and Tanaka proposed a bidirectional proxy re-encryption (PRE) scheme without bilinear maps, and claimed that their scheme is chosen-ciphertext secure in the standard model. However, by giving a concrete attack, in this paper we indicate that their PRE scheme fails to achieve the chosen-ciphertext security. The purpose of this paper is to clarify the fact that, it is still an open problem to come up with a chosen-ciphertext secure PRE scheme without bilinear maps in the standard model.

Metadata

Available format(s): PDF PS
Category: Public-key cryptography
Publication info: Published elsewhere. Unknown where it was published
Keywords: public-key cryptography
Contact author(s): cryptjweng @ gmail com
History: 2010-05-31: received
Short URL: https://ia.cr/2010/319
License: CC BY

BibTeX

@misc{cryptoeprint:2010/319,
      author = {Jian Weng and Yunlei Zhao},
      title = {On the Security of a Bidirectional Proxy Re-Encryption Scheme from {PKC} 2010},
      howpublished = {Cryptology {ePrint} Archive, Paper 2010/319},
      year = {2010},
      url = {https://eprint.iacr.org/2010/319}
}