Paper Info
Title
Conditional Proxy Broadcast Re-Encryption With Fine Grain Policy For Cloud Data Sharing
Abstract
Conditional proxy broadcast re-encryption (CPBRE) enables a semi-trusted proxy to convert Alice's ciphertext satisfying a certain condition into a set of users' ciphertext. The proxy, however, cannot learn anything about the underlying plaintext. The traditional CPBRE schemes cannot support flexible control on conditions. In this paper, we present a new primitive named conditional proxy broadcast re-encryption with fine grain policy (CPBRE-FG). In a CPBRE-FG scheme, the re-encryption key is generated with an access tree, and the ciphertext is constructed under a set of descriptive conditions. The proxy can convert a ciphertext if and only if the set of conditions satisfies the access tree. We formalise the notion of CPBRE-FG and present an efficient CPBRE-FG scheme. Finally, we prove it against chosen-ciphertext attack (CCA) security in the random oracle model.
Year
DOI
Venue
2019
10.1504/IJES.2019.098296
INTERNATIONAL JOURNAL OF EMBEDDED SYSTEMS
Keywords
Field
DocType
conditional proxy re-encryption, proxy broadcast re-encryption, access policy, random oracle model
Broadcasting,Computer science,Parallel computing,Data sharing,Random oracle,Encryption,Theoretical computer science,If and only if,Ciphertext,Plaintext,Cloud computing
Journal
Volume
Issue
ISSN
11
2
1741-1068
Citations 
PageRank 
References 
0
0.34
0
Authors
4
Name
Order
Citations
PageRank
Maosheng Sun101.01
Chunpeng Ge217616.69
Liming Fang314.13
Jiandong Wang430222.28