Compos Ability Research Articles

Secure Route Discovery for Dynamic Source Routing in Manets

Abstract Mobile ad hoc networks (MANETs) are collections of wireless mobile devices with restricted broadcast range and resources and no fixed infrastructure. Communication is achieved by communicating data along suitable routes that are dynamically discovered and maintained through association between the nodes. Discovery of such routes is a major task both from good organization and security points of view. Recently a security model tailored to the specific requirements of MANETs. A novel route discovery algorithm called endairA is also proposed together with a claimed security proof within the same model. In this paper we show the security proof for the route discovery algorithm endairA is malfunctioning and moreover this algorithm is vulnerable to a hidden channel attack. We also analyze the security framework that is used for route discovery and argue the compos ability is an essential feature for ubiquitous applications. We conclude by discussing some of the major security challenges for route discovery in MANETs.

Preserving Privacy by Enhancing Security inCloud

Cloud computing is emerging as a prevalent data interactive paradigm to realize users’ data remotely stored in an online cloud server. Cloud services provide more benefits for the users to enjoy the on-demand cloud applications without considering the local limitations. When accessing the data, many users may be in a collaborative relationship, and thus sharing of is significant to achieve productive benefits. The present solutions for security focuses on the authentication to realize that a user’s privative data cannot be accessed if it is found to be unauthorized, but it eliminates a subtle privacy issue during a user challenging the cloud server to request other users when the data being shared. The challenge is the request for accessing reveals the user’s privacy no matter whether it has got the data access permissions. The distributed privacy-preserving authentication protocol (SAPA) which is authority based to address above privacy issue for cloud storage. shared authority based privacy-preserving authentication protocol (SAPA) to address above privacy issue for cloud storage. In the SAPA, 1) shared access is achieved by anonymous access request matching mechanism with security and privacy considerations 2) attribute based access control is adopted to realize that the user can only access its own data fields; 3) proxy re-encryption is applied by the cloud server to provide data sharing among the many users. Meanwhile, universal compos ability (UC) model is established to prove that the SAPA theoretically has the correct design. This clearly shows that the proposed protocol realizing privacy-preserving data access authority sharing is impressive for multiple users collaborative cloud applications.