In this article we present a performance comparison of four symmetric block ciphers namely DES, Triple-DES, AES, and Blowfish. Performance evaluation based on CPU execution time is conducted under WinXP and Ubuntu /Linux version 8.10 operating system platforms. The study…

El Diseño, Creación e Implementación del Sistema de Matriculación Web de la Universidad de Guayaquil, fue desarrollada para automatizar la matriculación de estudiantes de diferentes facultades o escuelas, con el objetivo de mejorar y agilitar el proceso de matriculación en…

There can be two vital criteria of selecting an algorithm to fulfil one’s encryption requirement. The security level of the cipher (secrecy) and the encryption time (performance). There is less focus on secrecy of ciphers as a security measurement, thus…

First this paper points out two common problems of utilizing processors under multicore architecture, namely processors waiting for IO operation to finish and load balancing among cores. Then it makes an analysis of the reasons for them. In order to…

UML is widely accepted and practiced in industries for modeling and design of software systems. Software requirements and design are very important parts of software development. UML State Machine diagram is an important formalism to model the dynamic behavior of…

With the emergence and evolution of computer hardware, software and networks - virtual classrooms now exist which enable teachers and students to experience learning activities and to work together at a distance either directly or on a part-time basis. We…

This research examines the influence of teamwork, working environment on job satisfaction and job performance of Clove Cigarette Factories in East Java, Indonesia. This study was a survey research used for the explanatory or confirmatory purpose. The research was used…

The purpose of this study is to overview the gap between the theory and the existing condition towards Eco Industrial Park in the North Coast Region, East Java Province. We used gap analysis method.  The result shows that industrial area…

This work provides an imperial solution to the problems faced by man while enduring hazardous tasks like handling and disposal of nuclear wastes, monitoring nuclear power plants, mining operations etc .which have to be aborted if expertise group running it…

This study aims to obtain the digital image encryption algorithm with a simple but secure process, fast and efficient computing resources. The algorithms developed in this study were super-encryption algorithm that combines two of cipher called Playfair cipher and the…