Global Journal of Computer Science and Technology (GJCST)
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Data Security Using Tree Traversal
Get PDFwe all know that presently in 21st century one of the most emerging problem is Data Security. There is no guarantee that the data we have sent may be hacked by any Hacker or the data we have sent may reach correctly to the receiver or not. So many data security techniques have been emerged from past 2 to 3 years. But still we need a best technique to protect the data from third parties. Cryptography is an art of scrambling the data in order to provide security and confidentiality. Cryptography is being used in order for the securely transmission of the data. This paper provides a new idea for Data encryption and decryption in order to provide security for data
A Survey on Fault Tolerant Multipath Routing Protocols in Wireless Sensor Networks
Get PDFWireless Sensor Networks (WSNs) consists of large number of energy constrained sensor nodes that are randomly deployed. Sensor nodes have the ability to sense and send data towards the base station (BS). Sensor nodes require large amount of energy for data transmission. So while transmission, some nodes die because of energy depletion. In this case, chance of data loss increases. In order to reduce the data loss fault tolerance technique are used. To provide fault tolerance some Multipath Routing Protocol (MRP) are proposed, which can be classified in two ways i.e. alternative path routing or retransmission and concurrent routing protocol or replication. In MRP, multiple paths are used to send data from source to destination, where if one node fails during data transmission, another node can be used to transmit the same data to the destination by following other optimal path. In this paper we survey various multipath routing protocols along with their fault tolerance schemes and compare each protocol with various parameters
Effectiveness of Our New Right-to-Left English Transcription on Arabic Learning Using the Reversed Image -Support in Arabic E-Learning System for the Beginners
Get PDFArabic language differs from other languages in some features such as right-to-left writing, unfamiliar letters and sounds, using one of the letter2019;s forms depending on the letter2019;s position in a word, and attaching a diacritical mark to a letter to show how it is pronounced. It is important to provide a new transcription that follows Arabic direction and to help non-Arabic speakers to locate the letters corresponding to Arabic letters and their attached diacritical marks to read them. We invented a new transcription system for Arabic in which we transcribed every Arabic unit (an Arabic letter with an attached diacritical mark) by an English unit (an uppercase with a lowercase letter); we reversed the images of all English units horizontally. The new reversed transcription matches the direction of the Arabic writing. Our main aim is to apply this transcription in our new Arabic e-learning system as an on-demand support which let the learners read Arabic text itself at their own pace. This paper shows how our reversed image transcription works, especially for the beginners
Fusion of Steganography Digital Watermarking Data Hidden In Patient Medical Image using PPC Approach
Get PDFPrivacy is a critical issue when the patient message storage or processing to the medical services. Digital Image processing is the quick emerging area of medical science. The improvement of image processing was given by the technology improvement like digital visualizing, computer processor and large storage devices. Image processing allowed to compute the image in multidimensional within the system. First, the real problem becomes many severe due to the decrease of visual proofs in telehealth applications. A watermark is a protect message that message hidden into a mask message. Digital image watermarks are used for check the approval of the carrier signal for confirmation of the owners. In order to give information honesty, confidentiality and authentication various approaches are accessible like networking side cryptography, image processing side steganography and digital watermarking. To protect the patient message in telehealth, hidden into a mask message is recently used. Patient details are watermark within the cover medical image. The public and personal key cryptography (PPC) is insufficient for providing the trust a patient may attain during a face-to-face service
The Security of Elliptic Curve Cryptosystems - A Survey
Get PDFElliptic curve cryptography or ECC is a public-key cryptosystem. This paper introduces ECC and describes its present applications. A mathematical background is given initially. Then its2019; major cryptographic uses are given. These include its2019; use in encryption, key sharing and digital signatures. The security of these ECC-based cryptosystems are discussed. It was found that ECC was well suited for low-power and resource constrained devices because of its2019; small key size
A Survey on Issues and Challenges in Congestion Adaptive Routing in Mobile Ad hoc Network
Get PDFMobile ad hoc networks is the future wireless communication systems have recently emerged as an important trend. Mobile adhoc network is self-configurable and adaptive. Due to the mobility of nodes, the network congestion occurs and it is difficult to predict load on the network which leads to congestion. Mobile adhoc network suffers from a severe congestion controlling problem due to the nature of shared communication and mobility. Standard TCP controlling mechanism for congestion is not fit to the dynamic changing topology of MANETs. This provides a wide scope of research work in mobile ad hoc network. The purpose of this survey is to study and analyze various issues and challenges in congestion control mechanisms in adaptive routing protocols in Mobile Adhoc Network (MANET)
A Survey in Wireless Ad hoc Network Security and Secure Energy Optimization Approaches for Routing
Get PDFWireless ad hoc network nodes together establish a network infrastructure without using any access points or base stations for communicates using multi hop schemes. It has significant characteristics like dynamic topologies, constrained in bandwidth and limited resource a high challenge in implementing security with optimized energy resource utilization which is the key aspects while designing modern ad hoc networks architecture. Ad hoc Networks nodes are limited in broadcast range, and also their capabilities of computation and storage are well limited to their energy resources. This limitation of resources in wireless ad hoc creates high challenges in incorporating security mechanism for routing security and privacy maintenance. This paper investigates the various issues and challenges in secure routing and energy optimization during communication in wireless ad hoc network towards security and secure energy utilization improvisation
A Competence Approach to ICT Knowledge in Relation to Occupation: A Study of Indian Universities
Get PDFInformation and Communication Technology ICT has affected every facet of student faculty and researcher s life In Higher education system of India there is extensive involvement of ICT in colleges and universities To encourage the ICT based teaching and learning methodologies in Indian universities government had taken many rigorous steps on time The vision of Indian Prime minister is to empower every resident either urban or rural have to access the digital services knowledge and information through ICT Therefore researcher felt to investigate the ICT knowledge among students teachers and research scholars those are studying in Indian universities Many of universities either government or private are supporting the utilization of various ICT based teaching and learning practice This study describes the ICT knowledge between students and faculty in relation to their occupatio
Direction based Heuristic for Pathfinding in Video Games
Get PDFPathfinding has been one of major research areas in video games for many years. It is a key problem that most of the video games are confronted with. Search algorithms such as the A* algorithm and the Dijkstra2019;s algorithm representing such regular grid, visibility graphs also have significant impact on the performance. This paper reviews the current widely used solutions for pathfinding and proposes a new method which is expected to generate a higher quality path using less time and memory than other existing solutions. The deployment of the methodologies and techniques is described in detail. The significance of the proposed method in future video games is addressed and the conclusion is given at the end
Authentication Algorithm for Portable Embedded Systems using PUFs
Get PDFPhysical Unclonable Functions (PUFs) are circuits that exploit chip-unique features to be used as signatures which can be used as good silicon biometrics. These signatures are based on semiconductor fabrication variations that are very difficult to control or reproduce. These chipunique signatures together with strong challenge-response authentication algorithm can be used to authenticate and secure chips. This paper expands the security avenues covered by PUF and FPGAs by introducing a new class of concept called 201C;Soft PUFs.201D; This scheme propose robust challenge- response authentication solution based on a PUF device that provides stronger security guarantees to the user than what previously could be achieved. By exploiting the silicon uniqueness of each FPGA device and incorporating a special authentication algorithms in existing FPGA fabric, FPGA based embedded systems can be used for new security-oriented and network- oriented applications that were not previously possible or thought of