A mobile ad hoc network (MANET) is composed of multiple wireless mobile devices in which an infrastructureless network with dynamic topology is built based on wireless communication technologies. Novel applications such as locationbased services and personal communication Apps used by mobile users with handheld wireless devices utilize MANET environments. In consequence, communication anonymity and message security have become critical issues for MANET environments. In this study, a novel secure routing protocol with communication anonymity, named as Hash-based AnonymousSecure Routing (HASR) protocol, is proposed to support identity anonymity, location anonymity and route anonymity, and defend against major security threats such as replay attack, spoo ng, route maintenance attack, and denial of service (DoS) attack. Security analyses show that HASR can achieve both communication anonymity and message security with efficient performance in MANET environments.
This research presents the development of parylene thin-film deposition from the micrometer scale to nanometer scale. Processes improved film uniformity by 6% in the nanometer scale to meet the requirements of new applications of parylene, such as the delamination layer of organic light-emitting diodes, the dielectric film of through-silicon-via, and water-proofing mobile phones. The application and process of water-proofing mobile phones is also examined. The tested mobile phone was coated with a 0.5 μm parylene coating and functioned properly while submerged underwater. The mobile phone is still operational; thus, nanoscale parylene deposition is a novel application for water-proofing mobile phones. The application does not concern problems associated with parts assembly or damaged rubber material.
In recent years people in modern societies have heavily relied on their own intelligent mobile devices such as smartphones and tablets to get personal services and improve work efficiency. In consequence, quick and simple authentication mechanisms along with energy saving consideration are generally adopted by these smart handheld devices such as screen autolock schemes. When a smart device activates its screen lock mode to protect user privacy and data security on this device, its screen auto-lock scheme will be executed at the same time. Device user can setup the length of time period to control when to activate the screen lock mode of a smart device. However, it causes inconvenience for device users when a short time period is set for invoking screen auto-lock. How to get balance between security and convenience for individual users to use their own smart devices has become an interesting issue. In this paper, an intelligent display (screen) auto-lock scheme is proposed for mobile users. It can dynamically adjust the unlock time period setting of an auto-lock scheme based on derived knowledge from past user behaviors.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.