Title | ||
---|---|---|
Online/offline unbounded multi-authority attribute-based encryption for data sharing in mobile cloud computing. |
Abstract | ||
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In order to realize attribute‐based data sharing in cloud computing, multi‐authority
attribute‐based encryption (MA‐ABE) is extremely attractive. However, most of the
existing MA‐ABE schemes cannot support a fully large attribute universe and are not
suitable for resource‐constrained mobile data owners in that the computation cost
in secret key generation and encryption is extremely heavy. To tackle the earlier
challenges, we propose an online/offline MA‐ABE scheme, which realizes both the online/offline
secret key generation and the online/offline encryption while supporting a fully large
attribute universe. In the offline phase, one global‐identity authority and multiple
attribute authorities do the majority of the work to issue attribute secret keys before
knowing users' global identity and attributes. The data owner can perform most of
the encryption computation tasks before knowing the actual message and access structure.
Furthermore, the online phase can rapidly assemble the final decryption key and ciphertexts
when related specifications become known. Particularly, global‐identity authority
and attribute authorities need not to cooperate in the whole process. Our online/offline
MA‐ABE scheme allows the access policies encoded in linear secret sharing schemes.
The formal selective security proof and extensive performance analysis indicate that
our scheme is very suitable for data sharing in mobile cloud computing. Copyright
© 2016 John Wiley & Sons, Ltd.
|
Year | DOI | Venue |
---|---|---|
2016 | 10.1002/sec.1574 | Security and Communication Networks |
Keywords | Field | DocType |
data sharing,attribute‐based encryption,online/offline key,online/offline encryption,multi‐authority,unbounded universe | Mobile cloud computing,Secret sharing,Computer science,Computer security,Attribute-based encryption,Computer network,Encryption,40-bit encryption,Probabilistic encryption,On-the-fly encryption,Access structure | Journal |
Volume | Issue | ISSN |
9 | 16 | 1939-0122 |
Citations | PageRank | References |
10 | 0.46 | 36 |
Authors | ||
5 |
Name | Order | Citations | PageRank |
---|---|---|---|
Yinghui Zhang | 1 | 468 | 28.80 |
Dong Zheng | 2 | 335 | 43.37 |
Qi Li | 3 | 410 | 78.59 |
Jin Li | 4 | 4886 | 213.21 |
Hui Li | 5 | 814 | 92.33 |