Secure multicast represents the core component of many web and multimedia applications such as pay-TV, teleconferencing, real-time distribution of stock market price and etc. The main challenges for secure multicast is scalability, efficiency and authenticity. In this paper, we propose a scalable, efficient, authenticated group key agreement scheme for large and dynamic multicast systems. The p...

To allow or protect the traffic in any network security system like firewalls and Intrusion Prevention System (IPS), a packet classification scheme is used along with the application of TCAM-based flow identification [1]. But these applications share a common demand, which is the ability to process, maintain, and correlate huge amount of events. In these applications, the rate of the events is ...

DNA chips are widely used for genomic analysis. Currently, high-density DNA chips can be synthesized with up to several hundred thousand different spots on an area of 1 cm. In principle, the complete human genome can be probed with such a chip. The required high spot densities can be achieved by photolithographic in situ DNA-chip synthesis. In this method, the oligonucleotides are synthesized s...

Proposals for multicast security that have been published so far are complex, often require trust in network components or are inefficient. In this paper we propose a series of novel approaches for achieving scalable security in IP multicast, providing group-wide privacy and authentication. They can be employed to efficiently secure multi-party applications where members of highly dynamic group...

The security issues in ad hoc network are increasingly important. In this paper, we propose a distributed key management what approach by using braid groups and key tree. Without any assumption of prefixed trust relationship between nodes, the proposed method works in a self-organizing way to provide the key management services. The using of the proposed tree-based braid groups has following ad...

Current electricity tariffs do not reflect the real cost that customers incur to suppliers, as units are charged at the same rate, regardless of how predictable each customer’s consumption is. A recent proposal to address this problem are prediction-of-use tariffs. In such tariffs, a customer is asked in advance to predict her future consumption, and is charged based both on her actual consumpt...

We study the problem of broadcasting confidential information to a collection of n devices while providing the ability to revoke an arbitrary subset of those devices (and tolerating collusion among the revoked devices). In this paper, we restrict our attention to low-memory devices, that is, devices that can store at most O(log n) keys. We consider solutions for both zero-state and low-state ca...

Controlling the rate of multicast data transfer to a large number of receivers is difficult, due to the heterogeneity among the end-systems’ capabilities and their available network bandwidth. If the data transfer rate is too high, certain receivers will lose data, and retransmissions will be required. If the data transfer rate is too slow, an inordinate amount of time will be required to trans...

Group key management presents a fundamental challenge in secure dynamic group communications. In this paper, we propose an efficient group authenticated key agreement protocol (EGAKA), which is designed to be fully distributed and fault-tolerant, provides efficient dynamic group membership management, mutual authentication among group members and is secure against both passive and active attack...