Journal on Communications ›› 2016, Vol. 37 ›› Issue (Z1): 140-146.doi: 10.11959/j.issn.1000-436x.2016260

• Contents Papers • Previous Articles     Next Articles

Lightweight integrity verification scheme for cloud based group data

Yun-fei LIU1,Yong-jun WANG1,UShao-jing F1,2   

  1. 1 College of Computer,National University of Defense Technology,Changsha 410073,China
    2 Sate Key Laboratory of Cryptology,Beijing 100878,China
  • Online:2016-10-25 Published:2017-01-17
  • Supported by:
    The National Natural Science Foundation of China;The National Natural Science Foundation of China;The National Natural Science Foundation of China;The Open Foundation of State Key Laboratory of Cryptology;The Open Fund Project of Innovation Platform for Universities in Hunan Prov-ince

Abstract:

In order to protect the security of the data stored in the cloud by group users,a data integrity verification scheme was designed which can protect the privacy of the group users.The scheme can efficiently detect the shared data in the cloud and support the dynamic updating of the data,and use the characteristic of the ring signature to hide the iden-tity of the signer corresponding to the data block.That is,the third-party verifier can not spy on the users identity and other private information when validating.The aggregated approach is used to generate data labels,which reduces the storage cost of labels and supports the dynamic operation of group data,so that the users in the group can easily modify the cloud group data.

Key words: cloud storage, data integrity, identity privacy, data integrity

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