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Abstract—In this paper we propose a novel Cross-layer Localized Authentication Mechanism (CLAM) to secure mobility in Next Generation Networks. The proposed mechanism integrates Proxy MIPv6 and Session Initiation Protocol (SIP) to handle the authentication locally in real-time and non-real-time communications. The design objectives of CLAM are three fold: i) handover latency is minimized by the local management of authentication; ii) simple to implement in mobile devices because of symmetric cryptographic and one-way hash operations; iii) possesses important security properties such as resistance against various attacks, user anonymity, mutual authentication, user friendly, one-time session key agreement, backward secrecy, forward secrecy, and confidentiality. We analyze and compare the performance of CLAM with existing schemes in terms of handover latency, signaling cost, communication overhead, computational cost, and packet loss. The numerical and simulation results demonstrate that our proposed scheme outperforms the existing schemes.

Next Generation Networks (NGNs) are aiming to integrate different access technologies for the accessibility of heterogeneous platform under the control of IP protocol. In such a complex environment, the availability of high data rates, high bandwidth, security, and end-to-end QoS are major challenges. In this paper cross-layer localized mobility management based on Session Initiation Protocol (SIP) and Hierarchical MIPv6 (HMIPv6) is proposed to support the providence of the end-to- end QoS; network and session mobility; reduce latency; and proper bandwidth management. The proposed scheme handles the mobility locally to minimize latency. Further, QoS manager is used for proper management of bandwidth. Performance analysis and numerical results demonstrate the efficiency and feasibility of proposed scheme for real time communication in terms of latency, packet loss, and traffic load. Index Terms—Next generation networks, hierarchical mobile IPv6, session initiation protocol, End-to-End QoS

Most of the file systems today are based on desktop metaphor utilizing hierarchies of folders and sub-folders for information storage and retrieval. A folder is usually assumed to store the semantically related information in the form of files and sub-folders. However, there always exist related files somewhere else in the local file system hierarchy. Users often fail to find these disconnected files or discover the relationship among these. File systems maintain a plain set of metadata items about each file which could be utilized to discover some of the hidden relationships. However, this meta-information is very sparse as most of this metadata is rarely entered by the user. Moreover, files in a file system are mostly private and cannot get the benefit of collaborative tagging. Web of Data, on the other hand also contains information related to the file system objects which could be utilized for linking with information in file systems. The purpose of introducing Linked Data technology was to solve similar issues on the web. This article investigates the exploitation of Linked Data technology in file systems and provides a comprehensive review on the possible use of Linked Data Technology in file systems.

Frequent itemsets mining is one of the interesting applications of data mining. Recently data mining has got a great deal of attention due to the explosive growth in data and the economic and scientific need for turning such data into useful information. However, the traditional frequent itemsets mining algorithms have become inefficient to work with large datasets effectively on a single machine due to computational power and memory limits. Current methods prefer to control the execution time and output by using higher minimum support thresholds, which lead to less candidates and frequent itemsets. In this paper, an improved-version of Apriori like HFDM-EB algorithm that can deal with lower minimum support thresholds is proposed for mining frequent itemsets over big transactional data on Hadoop framework and by utilizing compressed bitmaps. The experimental results show that the improved algorithm is efficient and scalable for mining frequent itemsets in big data.

In this paper we propose a novel authentication mechanism for session mobility in Next Generation Networks named as Hierarchical Authentication Key Management (HAKM). The design objectives of HAKM are twofold: i) to minimize the authentication latency in NGNs; ii) to provide protection against an assortment of attacks such as denial-of-service attacks, man-in-the-middle attacks, guessing attacks, and capturing node attacks. In order to achieve these objectives, we combine Session Initiation Protocol (SIP) with Hierarchical Mobile IPv6 (HMIPv6) to perform local authentication for session mobility. The concept of group keys and pairwise keys with one way hash function is employed to make HAKM vigorous against the aforesaid attacks. The performance analysis and numerical results demonstrate that HAKM outperforms the existing approaches in terms of latency and protection against the abovementioned attacks

Data is a critical asset for every organization. Data of organizations are normally stored in database, therefore, database security is important. Encryption is one of the strong security layers in database security, but SQL has a limitation that its queries cannot be run directly on encrypted data. When some update is needed in an encrypted column of table so the entire column needs to be decrypted before updation process, this degrades system performance. This paper proposes a new technique to update value directly although the conditioned column is in encrypted form. It does not need to decrypt the entire conditioned column for update process. This improves system performance.

Next Generation Networks (NGNs) promise Always Best Connection in heterogeneous networks. Providing end-to-end QoS in such environment is a challenging task. Since application's requirements and user's expectations are increasing, QoS gains the significance in NGNs. In order to provide end-to-end QoS in NGNs, this paper proposes a new protocol Combined SIP HMIPv6 (CSH) with a module QoS manager. Unlike other QoS mechanisms, CSH focuses on both core and edge networks. The achievements of CSH will include better session and terminal mobility, network mobility, proper bandwidth management, good resource reservation, user authentication and less delay while establishing multimedia traffic.

Web applications have gained an enormous increase in popularity for providing various facilities online, such as e-shopping, e-banking, e-ticketing, e-learning etc. As the use of web applications grow, there is an increase in the attacks on web applications as well. Among these attacking techniques, SQL Injection has been emerging as one of the most dangerous threats to web applications. SQL Injection technique is mostly an attack on data driven web applications. By providing especially built user input through the web form fields, the attacker can access and modify the contents of the underlying database of a web application. This research work presents a technique, which will be used for the detection and prevention from SQL Injection. The parameterized cursor is used to implement the concept. The user session information will be passed as a parameter to cursor. If the user is an authorized user then the cursor will fetch the desired tuples else will fail to execute. This research work can easily be adopted and implemented in any platform and database. An example application is developed in Oracle Internet Developer suite 10g and Oracle Database 10g to test the performance against SQL Injection.