Gradual identity exposure using attribute-based encryption Online publication date: Sat, 23-Aug-2014
by Zhibin Zhou; Dijiang Huang
International Journal of Information Privacy, Security and Integrity (IJIPSI), Vol. 1, No. 2/3, 2012
Abstract: Many ciphertext policy attribute-based encryption (CP-ABE) schemes do not protect receivers' privacy, since all the attributes to describe the eligible receivers are transmitted in plain texts. Hidden policy-based ABE schemes have been proposed to protect receivers' privacy. However, hidden policy-based constructions require every user to 'try' decrypting all received cipher messages, which incurs great computation and communication overhead. To address this issue, in this paper, we propose a new concept gradual identity exposure (GIE) to protect data receivers' identity. Our main idea is to reveal the receivers' identities (i.e., the access policy) gradually in the process of decryption, where the required attributes are exposed one-by-one. If the receiver does not possess one attribute in the decryption procedure, the rest of attributes remain hidden. Compared to hidden-policy-based solutions, GIE supports more flexible access policy and, more importantly, provides significant performance improvement in terms of both computation and communication performances. We also present a theoretical framework to model the GIE with several new proposed concepts.
Online publication date: Sat, 23-Aug-2014
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 Information Privacy, Security and Integrity (IJIPSI):
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 email@example.com