期刊名称：International Journal of Computer Science and Information Technologies
电子版ISSN：0975-9646
出版年度：2016
卷号：7
期号：6
页码：2456-2460
出版社：TechScience Publications
摘要：Sensor nodes in military environments such as abattlefield or a hostile region are likely to suffer fromintermittent network connectivity and frequent partitions.Disruption-tolerant network (DTN) technologies are becomingsuccessful solutions that allow wireless devices carried bysoldiers to communicate with each other and access theconfidential information or command reliably by exploitingexternal storage nodes. Some of the most challenging issues inthis scenario are the enforcement of authorization policies andthe policies update for secure data retrieval. Ciphertext-policyattribute-based encryption (CP-ABE) is a promisingcryptographic solution to the access control issues. However,the problem of applying CP-ABE in decentralized DTNsintroduces several security and privacy challenges with regardto the attribute revocation, key escrow, and coordination ofattributes issued from different authorities. In this paper, wepropose a secure data retrieval scheme using CP-ABE fordecentralized DTNs where minimum number of multiple keyauthorities manage their attributes independently by usingmutual authentication protocol, data exchange protocol andsymmetric key block encryption algorithm. We demonstratehow to apply the proposed mechanism to securely andefficiently manage the confidential data distributed in thedisruption-tolerant military network
