### 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.

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

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},
note = {\url{https://eprint.iacr.org/2010/319}},
url = {https://eprint.iacr.org/2010/319}
}

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