LWE-based multi-authority attribute-based encryption scheme with hidden policies Online publication date: Thu, 20-Jun-2019
by Qiuting Tian; Dezhi Han; Xingao Liu; Xueshan Yu
International Journal of Computational Science and Engineering (IJCSE), Vol. 19, No. 2, 2019
Abstract: Most attribute-based encryption schemes are based on bilinear maps, which have large computational and storage overhead and cannot resist quantum attacks. In view of the above problems, a LWE-based multi-authority attribute-based encryption scheme with hidden policies is proposed. Firstly, the scheme uses the lattice theory to replace the previous bilinear maps, and supports multi-authority to manage different attribute sets. Secondly, the Shamir secret sharing mechanism is introduced to construct the access tree structure, which improves the flexibility of the system. Also, the access policies can be completely hidden so as to protect the privacy of users. Finally, the scheme is proved to be secure against the chosen plaintext attack under the standard model. Compared with the existing related schemes, the size of public parameters, master secret key, user's private key and ciphertext are all optimised in some degree. Therefore it is more suitable for data encryption in cloud environment.
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Computational Science and Engineering (IJCSE):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email subs@inderscience.com
Our Blog 
Follow us on Twitter 
Visit us on Facebook