Paper Info
Title
Identity-based conditional proxy re-encryption with fine grain policy.
Abstract
An identity-based conditional proxy re-encryption scheme (IB-CPRE) allows a semi-trusted proxy to convert a ciphertext satisfying one condition, which is set by the delegator, under one identity to another without the necessity to reveal the underlying message. In ICISC 2012, Liang, Liu, Tan, Wong and Tang proposed an IB-CPRE scheme, and left an open problem on how to construct chosen-ciphertext secure IB-CPRE supporting OR gates on conditions. In this work, we answer this aforementioned problem by constructing an identity-based conditional proxy re-encryption scheme with fine grain policy (IB-CPRE-FG). In an IB-CPRE-FG scheme, each ciphertext is labeled with a set of descriptive conditions and each re-encryption key is associated with an access tree that specifies which type of ciphertexts the proxy can re-encrypt. Furthermore, our scheme can be proved secure against adaptive access tree and adaptive identity chosen-ciphertext attack. HighlightsConditional proxy re-encryption.Identity-based proxy re-encryption.Chosen-ciphertext security.Cloud computing.
Year
DOI
Venue
2017
10.1016/j.csi.2016.12.005
Computer Standards & Interfaces
Keywords
Field
DocType
Conditional proxy re-encryption,Identity-based proxy re-encryption,Chosen-ciphertext security
Proxy (climate),Open problem,Computer security,Computer science,Computer network,Theoretical computer science,OR gate,Ciphertext,Proxy re-encryption
Journal
Volume
Issue
ISSN
52
C
0920-5489
Citations 
PageRank 
References 
5
0.45
31
Authors
4
Name
Order
Citations
PageRank
Chunpeng Ge117616.69
Willy Susilo24823353.18
Jiandong Wang330222.28
Liming Fang432328.85