Unified architecture of mobile ad hoc network security (MANS) system

In this dissertation, a unified architecture of Mobile Ad-hoc Network Security (MANS) system is proposed, under which IDS agent, authentication, recovery policy and other policies can be defined formally and explicitly, and are enforced by a uniform architecture. A new authentication model for high-value transactions in cluster-based MANET is also designed in MANS system. This model is motivated by previous works but try to use their beauties and avoid their shortcomings, by using threshold sharing of the certificate signing key within each cluster to distribute the certificate services, and using certificate chain and certificate repository to achieve better scalability, less overhead and better security performance. An Intrusion Detection System is installed in every node, which is responsible for colleting local data from its host node and neighbor nodes within its communication range, pro-processing raw data and periodically broadcasting to its neighborhood, classifying normal or abnormal based on pro-processed data from its host node and neighbor nodes. Security recovery policy in ad hoc networks is the procedure of making a global decision according to messages received from distributed IDS and restore to operational health the whole system if any user or host that conducts the inappropriate, incorrect, or anomalous activities that threaten the connectivity or reliability of the networks and the authenticity of the data traffic in the networks. Finally, quantitative risk assessment model is proposed to numerically evaluate MANS security

Protected Secret Sharing and its Application to Threshold Cryptography

Title from PDF of title page, viewed April 19, 2017Thesis advisor: Lein HarnVitaIncludes bibliographical references (pages 36-40)Thesis (M.S.)--School of Computing and Engineering. University of Missouri--Kansas City, 2016In the secret reconstruction of Shamir’s (t,n) secret sharing scheme (SS), shares released by shareholders need to be protected otherwise, non-shareholders can also obtain the secret. Key establishment protocol can establish pairwise keys for any pair of shareholders. Then, shareholders can use these pairwise keys to protect shares in the secret reconstruction process. However, adding a key establishment in the secret reconstruction slows down the process significantly. Shamir’s SS is based on a univariate polynomial. Shares generated by a bivariate polynomial enable pairwise keys to be shared between any pair of shareholders. But we proposed a new type of SS, called protected secret sharing scheme (PSS), in which shares of shareholders can not only be used to reconstruct the secret but also be used to protect the secrecy of shares in the secret reconstruction process. Thus, the recovered secret is only available to shareholders but not to non-shareholders. A basic (t,n) PSS based on a bivariate polynomial is proposed. Furthermore, we introduce to use this basic PSS in the applications of threshold cryptography. The PSS is unique since it protects the secrecy of the recovered secret in a very efficient way.Introduction -- Related work -- Our scheme -- Security analysis and performance -- Application to algorithms of threshold cryptography -- Conclusio

Mobile Ad-Hoc Networks

Being infrastructure-less and without central administration control, wireless ad-hoc networking is playing a more and more important role in extending the coverage of traditional wireless infrastructure (cellular networks, wireless LAN, etc). This book includes state-of the-art techniques and solutions for wireless ad-hoc networks. It focuses on the following topics in ad-hoc networks: vehicular ad-hoc networks, security and caching, TCP in ad-hoc networks and emerging applications. It is targeted to provide network engineers and researchers with design guidelines for large scale wireless ad hoc networks

Flexible Long-Term Secure Archiving

Privacy and data protection have always been basic human needs in any society that makes use of written language. From simple personal correspondence over military communication to trade secrets or medical information, confidentiality has been of utmost importance. The implications of a leak of such sensitive information may prove devastating, as the previous examples illustrate perfectly. Furthermore reliability, that is, integrity and authenticitiy of information, is critical with risks reaching from annoying to lethal as can again be seen in the previous examples. This need for data protection has carried over from the analogue to the digital age seamlessly with the amount of data being generated, transmitted and stored increasing steadily and containing more and more personal details. And in regard of the developments in computational technology that recent years have seen, such as the ongoing improvements with respect to quantum computing as well as cryptoanalytical advances, the capabilities of attackers on the security of private information have never been more distinct. Thus the need for privacy and data protection has rarely been more dire

Conflict Transformation and the Spiritual Practices for the Military Chaplain

No abstract is available

Factors Impacting Key Management Effectiveness in Secured Wireless Networks

The use of a Public Key Infrastructure (PKI) offers a cryptographic solution that can overcome many, but not all, of the MANET security problems. One of the most critical aspects of a PKI system is how well it implements Key Management. Key Management deals with key generation, key storage, key distribution, key updating, key revocation, and certificate service in accordance with security policies over the lifecycle of the cryptography. The approach supported by traditional PKI works well in fixed wired networks, but it may not appropriate for MANET due to the lack of fixed infrastructure to support the PKI. This research seeks to identify best practices in securing networks which may be applied to new network architectures