International Journal of Computer Techniques

1-6

Authors: Elayaraja.D,J.Caroline EL Fiorenza(Assistant Professor)

Cloud Computing is the delivery of Computing services over the Internet. The Cloud Data services stores Data in the cloud and shares across multiple users, who can easily modify the shared data as a group. To ensure the shared data integrity, users in the group need signatures on all data blocks .Due to Data modifications done by different users in the group, it is essential that the shared data blocks are to be signed by different users. Once a user is revoked from the group for security reasons, the existing user must be re-signed. This system proposes a public auditing procedure for the integrity of shared data which is performed by a third party auditor, with valuable user revocation. Instead of downloading and ReSigning the shared blocks by the existing user, we allow the cloud to Re-sign blocks by digital signature during user revocation. Also, our process supports batch auditing and maintain the data in the form of versions. Hence it improves the efficiency of user revocation, maintain the Data modifications history and the compatibility to retrieve the earlier versions. Also Cloud computing is completely about productivity, economy, and corporate agility. But there raises a question how we can commercially attain those benefits if their cloud management solution becomes inefficient, incomplete, and inflexible. Even though there are many aspects in cloud environment. Keywords: - Cloud computing, Data security, Internet, Key, cloud server, digital signature and encryption.

12-19

Authors: Hema M, Natchadalingam R

In Wireless Sensor Networks (WSN) Routing and Security are the main design issues for message delivery. Here we propose a new application-NEO WSN: Network Lifetime Enhancement with OSPFV3 Authentication Scheme that balance the entire sensor network energy consumption and thereby extend the sensor network lifetime. In our system Network Lifetime Enhancement with OSPFV3 Authentication Scheme for Security is proposed. The NEO Routing protocol provides shortest path for information routing and balance the energy using energy balance control parameter thereby growing the network lifetime. Then Open Shortest Path First version 3 IPSec ESP Encryption and authentication scheme provides security and integrity and confidentiality. Our theoretical analysis and NS2 simulation results demonstrate that the proposed protocol can provide an excellent tradeoff between routing efficiency, energy balance and can significantly extend the lifetime of the sensor networks in all scenarios. This method provides efficient routing and security for wireless sensor networks. Keywords: Routing, security, Energy efficiency, Energy Balance Parameter, Authentication, Simulation

23-29

Authors: -B.Sudha,Mr.S.ArunKumar

Securely maintaining log details over extended periods of time is very significant for the proper operations of any organization. The information about the log files often contains trustworthy information, secrecy and privacy of log records are constantly imperative. However, building a secure logging infrastructure involves more capital expenses that many organizations may find exhausted. Providing log management to the cloud appears to be a great cost saving measure. In this paper, we identify the goals for a secured cloud-based log management service and propose an infrastructure for doing the same. Keywords — Log Management, Cloud Computing,Encryption,Decryption,Authentication,vIntegrity.

36-39

Authors: Karthik N, S.Sivamohan

It’s not an easy work to strongly preserve all crucial data everywhere it has the need in countless applications for clients in the cloud server. To reservation of our information in cloud, it may not be fully honest because client doesn’t have duplicate of entire data in the cloud. Then some authors never tell us data honour over its user and CSP level by assessment of data earlier and later which is uploaded in cloud. Hence we have to found new projected system for this by our data analysis protocol algorithm to check the honour of data earlier the client and later data was inserted in cloud. The highly secured data tested by client earlier and later with the help of CSP with our actual programmed data analysis protocol from user as well as cloud equal into the cloud with honesty. Likewise we take planned the multiple server data assessment algorithm with the control of each updated data will be outsourced before equal for server repair access point for upcoming data recovery from the, am cloud data server. Our proposed scheme professionally checks integrity in effective way so that data integrity as well as safety can be continued in all belongings by seeing disadvantages of remaining approaches

45-50

Authors: Rejani.R Deepu,V. Krishnan

With the advancement of technology internet and various communication techniques that pass through it has grown in prominence each day. However along with this advancement has also grown the threat of hackers and malicious groups. There has been several passive and active attacks making the role of data security pretty important. Most of the time the data passed via internet might contain confidential or personal information which many people would want to be protected against attacks. Various data encryption algorithms has been developed to make sure that the data transmitted via internet is secure from any sort of hacking or attacks.Several cryptographic algorithms also have been developed for encryption and with each one having some advantages and disadvantages. This paper presents a detailed study of symmetric encryption/decryption algorithms and its advantages and disadvantages. Keywords:- Symmetric key Encryption, Symmetric key Decryption, Cipher Text, Plain Text, Cryptography, Crypt analysis, Key DES, AES, TDES, etc...

55-59

Authors: Vinodh Kumar.J, Sivamohan.S

Organizations outsource their database to service provides and there are concerns raised on data confidentiality and privacy of customer data. To avoid such apprehension, data are encrypted before it is farm out. Any software-based cryptographic methods deployed on server-side query to process encrypted data limits query expressiveness. Here a setup is initiated called Trusted DB which is an outsourced model that allows users to run their query with privacy and under regulatory norms by minimizing server load in significant query execution phase. Trusted DB does not limit query performance and the cost per query is orders of degree lower than any existing software-only mechanisms available. Keywords: Secure Co-Processor (SCPU) , tamper-proof , Trusted DB , homomorphism

66-71

Authors: Lakshmipriya.V, Praveena.V(Assistant Professor)

Cloud-assisted mobile health (mHealth) monitoring is a system, which applies the prevailing mobile communications and cloud computing technologies to provide feedback decision support. It has been considered as a revolutionary approach to improving the quality of healthcare service while lowering the healthcare cost. Unfortunately, it also come across a serious risk on both clients’ privacy and intellectual property of monitoring service providers, which may slowdown the wide adoption of mHealth technology. The aim of the paper is to address this important problem and design a cloud-assisted privacy preserving mobile health monitoring system to protect the privacy of the involved parties and their data. Moreover, the involved outsourcing decryption technique and a newly proposed key private proxy re encryption are adapted to shift the computational complexity of the involved parties to the cloud without compromising clients’ privacy and service providers’ intellectual property. Finally, the analysis on security and performance demonstrates the effectiveness of our proposed design. Keywords: -Cloud computing, Data security, digital signature, encryption, Internet, Key and cloud server

81-86

Authors: S.Syeda Khatija kubra,P.murugan

Tuberculosis is the extreme disease noted in the world. HIV/AIDS patients have an immune system which is impaired and that has made an impact on the problem. In the case of Tuberculosis the probability of mortality rate is not zero. In order to reduce the mortality rate the AAM (Active Appearance Model) in which training and segmentation process is undergone is used in the existing system. It is a method used for processing and analyzing manually traced segmentation examples during an automated training stage. Information about Image appearance and shape of lung structure is contained in a single model. But the major drawback is this method is not robust against occlusion. If the parts are occluded then they obtained result is unreliable. To overcome this problem we propose a Robust PCA (RPCA) method. By using this method computational effort is reduced and accurate reconstruction is also obtained. The results shows greater advantage for showing accuracy and speed for any distributed data. Keywords: Principal Component Analysis (PCA), Robust PCA (RPCA) , AAM(Active Appearance Model),Robust training and Reconstruction.

91-95

Authors: Priya.K, Mr.R.Jayaraj (Asst. Professor)

Social networks hosted by a website are graphs of people where edges connect friends. Friendship represents shared interest or trust. A Network consists of one or more Nodes it could be Persons, Organizations, Groups, and Nations, Web Connected by One or More Ties. Users of these sites do not have much control to avoid unwanted content to be displayed on their own private space called in general wall. Therefore a major task of today’s online social network is information filtering. To control the abused words posting on a wall using the concept of Content Based Message Filtering (CBMF) and Machine learning Technique. The more sophisticated approach to decide when a user should be inserted in to a Blacklist is implemented by the User feedbacks. The user has the option to suggest people to add in the Blacklist. The particular user then searched in the Blacklist database suppose if the user exists then she/he would be blocked. Also, if the user feedback is more than 50% to block the same user then the user will be blocked. Additionally, before the comment is made public on the post or share made by the user, they have the option to block or approve it. This concept avoids the usage of abused words in the content and dissatisfaction of comments. Keywords:- Online Social Network, Content based Message Filtering, Filtering Techniques

103-108

Authors: Ramkumar.G, S.P Maniraj (Assistant Professor)

Resist intruders and security related issue we must able to detects the intruder’s image. In this scenario set of images taken as input and stored in the database for reference in order to match the intruders face for face recognition system. Captured images data are corrupted in the database in case of different appearance and different variety of expression in person face. Existing approaches like as Eigen faces or state of the art and low rank matrix decomposition algorithm did not work effectively in case variety of expression and different appearance in the intruder’s face. To solve the existing issues in this paper we propose an intellect face recognition using component analysis with hankel decomposition algorithm Identifies required person images regardless of expression, look style, eye and hair and in a dull background environment. Finally refined ability is added in order to differentiate the person identity which improved face recognition performance.

114-120

Authors: S.N.Nandhini, Mr.R. Augustian Issac

Context representation and maximize power efficiency in mobile sensing applications require continuous data achievement and construal on more mobile sensor application level Existing model framework and inhomogeneous decreasing device battery lifetimes and it's operations put a heavy workload on the smart phone processor and sensor. Overcome from existing system in proposed using Fuzzy logic is an approach to novel context-inferring algorithms and generic framework designs that can help readers enhance existing between quality and price in mobile sensing applications, especially accuracy and power consumption. Proposed Focusing on a specific sensor to discover possible target applications in order to exploit contextual data. Proposed system providing an accurate user state framework model and more maximize power efficiency while the model operates on mobile sensor applications. Proposing developed the future of context-aware mobile sensing applications intends to generate and simplify a generic framework structure for user states. Keywords: - Mobile sensing, Energy efficiency, Context-awareness, Machine learning

128-141

Authors: Radhya Sahal, Sherif M. Khattab, Fatma A. Omara

The Virtual Design Advisor (VDA) has addressed the problem of optimizing the performance of Database Management System (DBMS) instances running on virtual machines that share a common physical machine pool. In this work, the search algorithm in the optimization module of the VDA is improved. An Exhaustive Greedy algorithm (EG) studies the effectiveness of tuning the allocation of the shared resources (the share values); and presents a mathematical analysis of the effect of the share values on reaching an optimal solution. Also, it studies the effect of the share values of resources on the feasibility and speed of reaching an optimal solution. On the other hand, the particle swarm optimization (PSO) heuristic is used as a controller of the greedy heuristic algorithm to reduce trapping into local optima. Our proposed algorithm, called Greedy Particle Swarm Optimization (GPSO), was evaluated using prototype experiments on TPC-H benchmark queries against PostgreSQL instances in Xen virtualization environment. Our results show that the GPSO algorithm required more computation but in many test cases succeeded to escape local optima and reduce the cost as compared to the greedy algorithm alone. Also, the EG search algorithm was faster than the GPSO algorithm when the search space of the share values grows. Keywords: - Virtualization, Resource Allocation, Particle Swarm Optimization, Greedy Search, Query Optimizer.

156-162

Authors: Manikandan.R, R.J.Poovaraghan

Authentication is the most common and essential Service of Information Security. User authentication protocol plays a vital role in payment schemes. The main concept of oPass is to free users from having to remember or type any passwords into conventional computers for authentication. Unlike generic user authentication, oPass involves a component which is used to generate one-time passwords and a communication channel, mail ids which is used to transmit authentication messages. In our opinion, it is difficult to thwart password reuse attacks from any scheme where the users have to remember something. We also state that the main cause of stealing password attacks is when users type passwords to untrusted public computers. In order to make the communication more secure, the user logins by providing the graphical password. This graphical password is stored in the database when the user registers his/her account. This graphical password is limited to a certain pixels. When the user logins, he/she has to provide the graphical password of the given pixels. If the graphical password provided matches with the password stored in database, then the user is recognized as an authorized user. Else the user’s access will be denied since he is an authorized person. We propose RACE, a Report-based payment scheme for MWNs. The nodes submit lightweight payment reports (instead of receipts) to the AC to update their credit accounts, and temporarily store undeniable security tokens called Evidences. The reports contain the alleged charges and rewards of different sessions without security proofs, e.g., signatures. The AC verifies the payment by investigating the consistency of the reports, and clears the payment of the fair reports with almost no cryptographic operations or computational overhead. For cheating reports, the Evidences are requested to identify and evict the cheating nodes that submit incorrect reports, e.g., to steal credits or pay less.

166-169

Authors: Sonal D Kalro, Meghashree B S, Prathiksha B G, Suhasini A,Dr.H D Phaneendra

A circuit board along with its electronic components mounted on its surface forms a Printed Circuit Board. A bare standard PCB without mounted components is scanned and compared with PCB to be inspected using image processing techniques and resultant image is checked for defected regions if found. Our focus is to examine every PCB for its defects. Keywords — PCB defects, Standard PCB Image, Image Processing, Inspected PCB Image.