General Security Mechanisms Research Articles

COLLABORATIVE FILE SHARING SYSTEM USING JXTA P2P NETWORKING INFRASTRUCTURE – AN APPLICATION DEVELOPMENT

This work aims to develop a simple workflow based collaborative application running over peer to peer network. Basic features of the application are to support communication and coordination in a workflow-based document production. Its offer services for text chat and file sharing. Text chat has two features, group chat or conference and personal chat, while file sharing service supports both synchronous and asynchronous mode that implies a repository function. As this application is developed with the assumption that it will be applied within a close environment, it is complied with a general security mechanism. Design and development processes of this application are depicted in the form of UML diagrams and implemented using Java Programming Language.

QOS Aware Privacy Preserving Location Monitoring in Wireless Sensor Network

Sensor networks have been widely employed in many real-time applications. One of the most obvious challenges appearing to threaten the successful deployment of sensor networks is privacy issues including source-location privacy which cannot be adequately addressed by general security mechanisms. Focusing on this important kind of privacy, among many approaches proposed in literatures, self-adjusting phantom routing is a very successful one. But it still has some weaknesses. In this paper, we propose an improved version of it to enhance its performance. This method can decrease energy consumption and communication cost while increase the accuracy of the aggregate locations by minimizing their monitored areas.

Denial-of-Service in Wireless Sensor Networks: Attacks and Defenses

This survey of denial-of-service threats and countermeasures considers wireless sensor platforms' resource constraints as well as the denial-of-sleep attack, which targets a battery-powered device's energy supply. Here, we update the survey of denial-of-service threats with current threats and countermeasures.In particular, we more thoroughly explore the denial-of-sleep attack, which specifically targets the energy-efficient protocols unique to sensor network deployments. We start by exploring such networks' characteristics and then discuss how researchers have adapted general security mechanisms to account for these characteristics.

Towards Secure e-Learning Applications: a Multiagent Platform

This paper presents some results in the intersection of three technological fields: e-learning, multiagent systems, and standards to improve the development of secure systems. There is a consensus that security is a critical issue for distributed, highly interactive and open learning environments. While a lot of effort in the e-learning domain has been put into delivering infrastructure and providing content, security issues have hardly ever been considered. Agent oriented methodologies may bring benefits to the conception of multiagent systems, since they gradually are incorporating specifications for general security mechanisms (FIPA standards). Concerning the specification of security requirements for e-learning environments, extended formalisms (such as security use cases) appear as proper modeling tools. The topics covered by this paper converge to the implementation of a multiagent platform (the PMA3), which constitutes an open distributed infrastructure addressing important security issues. PMA3 has been used in the development of elearning environments. The paper concludes with an outlook to ongoing research efforts related to security requirements for e-learning applications.

Dynamically negotiated security service for multicast application in the active network

Many cryptography and integrity algorithms have been suggested to enhance the security of active networks. Since senders and receivers of multicast applications may own different security processing capabilities and use different security services to communicate with each other, different security services must be negotiated among these receivers and senders before communication is implemented in the active network. However, this problem may not be validly solved by using general session protocols, key distributed and general multicast security mechanisms, because the premise of general security mechanisms presumes that senders and receivers of multicast applications all use the same security algorithms (i.e. the same security service). To address this problem, the paper proposes a novel mechanism to provide the needed mechanism of quality of security service and dynamically negotiated quality of security service for the senders and receivers of multicast application in the active network. It also provides different quality of security service resolutions for different receivers with different security service needs and includes six different negotiation styles.