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Paper 2016/698

A Note on One Secure Anti-Collusion Data Sharing Scheme for Dynamic Groups in the Cloud

Zhengjun Cao and Lihua Liu

Abstract

We remark that the scheme [IEEE TPDS, 27(1), 2016, 40-50] is flawed because the group manager cannot complete his computational task in the registration phase. Actually, they have misunderstood the concept of public key which is usually associated with an asymmetric encryption algorithm. Besides, the mechanism that the group manager has to re-encrypt all data stored in the cloud after a member is revoked, is somewhat infeasible because of its inefficiency.

Note: 3 pages

Metadata
Available format(s)
PDF
Category
Cryptographic protocols
Publication info
Preprint. MINOR revision.
Keywords
Cloud computingkey distributiondata sharing
Contact author(s)
liulh @ shmtu edu cn
History
2016-07-13: received
Short URL
https://ia.cr/2016/698
License
Creative Commons Attribution
CC BY
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