Publication Type

Journal Article

Version

publishedVersion

Publication Date

3-2010

Abstract

Proxy re-encryption (PRE), introduced by Blaze, Bleumer and Strauss in Eurocrypt’98, allows a semitrusted proxy to convert a ciphertext originally intended for Alice into an encryption of the same message intended for Bob. PRE has recently drawn great interest, and many interesting PRE schemes have been proposed. However, up to now, it is still an important question to come up with a chosen-ciphertext secure unidirectional PRE in the adaptive corruption model. To address this problem, we propose a new unidirectional PRE scheme, and prove its chosen-ciphertext security in the adaptive corruption model without random oracles. Compared with the best known unidirectional PRE scheme proposed by Libert and Vergnaud in PKC’08, our schemes enjoys the advantages of both higher efficiency and stronger security.

Keywords

Adaptive corruption model, Chosen-ciphertext attack, Unidirectional proxy re-encryption

Discipline

Information Security

Research Areas

Cybersecurity

Publication

Science in China Series F: Information Sciences

Volume

53

Issue

3

First Page

593

Last Page

606

ISSN

1009-2757

Identifier

10.1007/s11432-010-0047-3

Publisher

Springer Verlag (Germany)

Copyright Owner and License

Authors

Additional URL

https://doi.org/10.1007/s11432-010-0047-3

Share

COinS