49 research outputs found
An enhanced binding update scheme for next generation internet protocol mobility
No full textIn recent years, the usage of mobile devices has become essential for people,
both for business and for their daily activities. The mobile devices can get
services directly from their home network and from other correspondent
devices regardless of their position without using any intermediate agent. It is
achieved by using mobility based Internet Protocol version 6, called as next
generation internet protocol mobility. Since network mobility uses open air
interface as a communication medium, it is possible for many security threats
and attacks that might attempt to get unauthorized access from the
participating entities. Consequently, the protection of network mobility from
threats is one of the most demanding tasks as it must be considered without
increasing the complexity while enhancing security. Hence, the paper
proposes an enhanced location update scheme by incorporating the optimal
asymmetric encryption method based on the random oracle model for
providing security and efficiency. It emphasizes the security goals such as
authentication, integrity, and confidentiality from the security analysis. In
addition, it addresses the attack prevention analysis for the attacks such as
rerun, man-in-the-middle and false location update. The proposed scheme is
simulated and verified for security properties using a security validation tool -
Automated Validation of Internet Security Protocols and Applications.
Finally, the simulation studies show that the latency of the proposed scheme
is reduced significantly when compared the other location update schemes
Enantioselective functionalization at the C4 position of pyridinium salts through NHC catalysis
No full text© 2022, The Author(s).A catalytic method for the enantioselective and C4-selective functionalization of pyridine derivatives is yet to be developed. Herein, we report an efficient method for the asymmetric β-pyridylations of enals that involve N-heterocyclic carbene (NHC) catalysis with excellent control over enantioselectivity and pyridyl C4-selectivity. The key strategy for precise stereocontrol involves enhancing interactions between the chiral NHC-bound homoenolate and pyridinium salt in the presence of hexafluorobenzene, which effectively differentiates the two faces of the homoenolate radical. Room temperature is sufficient for this transformation, and reaction efficiency is further accelerated by photo-mediation. This methodology exhibits broad functional group tolerance and enables facile access to a diverse range of enantioenriched β-pyridyl carbonyl compounds under mild and metal-free conditions.11Nsciescopu
Prevention of Denial-of-service in Next Generation Internet Protocol Mobility
Get PDFInternet Protocol version 6 (IPv6) is a next-generation internet protocol that is devised to replace its predecessor, the IPv4. With the benefit of ample address space, flexible header extensions and its many specific features, IPv6 is the future of the Internet. A significant advantage of IPv6 is its capabilities in the domain of security and mobility, where it scores in comparison with its predecessor. One of the features specific to IPv6, such as the mandatory IPsec messaging or address auto-configuration, is the Neighbor Discovery Protocol (NDP). Even though the concept of security is more pronounced in the IPv6 protocols, there still exist loopholes. The extensive applications of NDP make it even more necessary to identify and address these issues to ensure security. Hence, this paper investigates loopholes in the applications of NDP and analyzes the process of the denial-of-service attacks that endanger the security. Also, the paper proposes a new method to mitigate Denial-of-Service (DoS) in IPv6 based network mobility. This proposed approach is a hybrid of existing solutions and is capable of overcoming the significant disadvantages of these solutions. Also, the paper discusses the comparative analysis among the existing solutions and illustrates the effect of the proposed method
A Secure and Efficient Location Update Scheme for Next Generation Proxy Mobile IP in Distributed Environment
No full textAbstractUsage of wireless networks among the users is apparently high. But, efficiency of the network gets decreased because of the challenges in the network. In proxy mobile IPv6 (PMIPv6), the message exchange for location update by any mobile device is established in centralized environment. Here, the messages are sent and received through local mobility anchor with centralized feature. As a result, there is devastating traffic at local mobility anchor which increases the cost of network. Also, the location update in distributed mobility environment is vulnerable to attacks such as false binding update, man-in-the-middle, replay attack etc. Therefore, the development of location update scheme necessitates the security enhancement and reduction in cost. Hence, the present paper proposes a new secure and efficient location update scheme using tokenization. It eliminates the additional message exchanges such as proxy binding update, binding query and acknowledgements between the hosts required in the earlier works. Here, the traffic overhead is controlled by distributing the token of mobile node with mobile access gateway in distributed mobility environment. The security of the proposed scheme is validated using AVISPA – a security model checker. Finally, the analysis of security and performance evaluation demonstrates that the proposed scheme shows better security and significant reduction in the cost of signaling messages and data packet delivery
Prevention of Desynchronization Attack in 4G LTE Networks Using Double Authentication Scheme
No full textAbstractThe core objective of 3GPP Long Term Evolution (LTE) is to provide a secured communication and high data rate for 4G users. Even though 4G network provides security, there are loopholes which lead to several attacks in 4G network. One such attack is desynchronization attack in 3GPP handover key management. This paper deliberates the vulnerability of desynchronization attack that occurs when source acts as rogue base station in 3GPP. In addition, it discusses how this attack jeopardizes the communication in 4G network and subsequently proposes a new scheme to overcome this attack. In the proposed scheme, the target generates its own key rather than using the key generated by source node for future communication with target to achieve a secure communication between the source and target base station in 4G LTE. The proposed scheme is simulated using network simulator 3 (NS-3). The numerical analysis shows that the proposed scheme achieves a significant reduction in the communication cost for key generation and authentication in LTE
Investigation of Home Agent Load Balancing, Failure Detection and Recovery in IPv6 Network-based Mobility
No full textActive Home Agent Load Balancing for Next Generation IP Mobility based Distributed Networks
No full textSecurity enhancement of handover key management based on media access control address in 4G LTE networks
No full textAn optimized and secure BUTE – binding update using twofold encryption for next generation IP mobility
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