String matching also known as pattern matching is one of primary concept for network security. In this area the effectiveness and efficiency of string matching algorithms is important for applications in network security such as network intrusion detection, virus detection, signature matching and web content filtering system. This paper presents brief review on some of string matching technique...

Today the demand for secure transfers of digital images , cryptanalysis and network security is a growing field. In this paper the security of RCES is analyzed and observed that it is insecure against the known/chosen-plaintext attacks .Here two seeds are generated chaotically and XOR’ed with plain image to get cipher image . The security of RCES against the bruteforce attack was overestimated....

In cyberspace security of private data is a prominent issue. Beside the reliable algorithm for automatic authentication, providing the security of the server database is considerable. In this paper a technique to secure the database of an iris-based biometric system is proposed. We employed visual cryptography, permutation and a block-based saving procedure to protect the template from maliciou...

This paper proposes the application of the Smart Security Concept in the East Mediterranean. Smart Security aims to secure critical infrastructure, such as hydrocarbon platforms, against asymmetrical threats. The concept is based on Anti Asymmetrical Area Denial (A3D) which necessitates limiting freedom of action of maritime terrorists and piracy by founding safe and secure maritime areas throu...

The health record in the Electronic Health Record (EHR) system is more sensitive than demographic. It raises the important issue for the EHR requirement in privacy, security, audit trail, patient access, and archiving and data retention. The studies about the EHR system security are deficient. The aim of this study is to build a security environment for the EHR system by Integrating the Healthc...

Recently, numerous service discovery protocols have been introduced in the open literature. Unfortunately, many of them did not consider security issues, and for those that did, many security and privacy problems still remain. One important issue is to protect the privacy of a service provider while enabling an end-user to search an alternative service using multiple keywords. To deal with this...

In accordance with human necessities and deep attention into security, research studies have today became an irrefutable necessity in this area. It is noted that traditional concepts of this important issue have changed, as a result of occurring various events in the past, particularly in the 20th century; so that security is no more limited to protecting human beings against individual and col...

As a significant part of information security, Visual Cryptography (VC) is a secret sharing approach which has the advantage of effectively obscuring hints of original secret. In VC, a secret image is separated into partitions which are also known as VC shares. The secret is only able to be revealed by superimposing certain shares. Since Basic VC is in a structure which is similar to that of Br...

Ubiquitous computing is a concept where computing is made to appear everywhere using any device, in an in any location and in any format. In this paper we have discussed the properties and applications of Ubiquitous Computing. We have also discussed some of the security challenges for Ubiquitous Computing and various security attacks on Ubiquitous Computing Networks. Keywords— Ubiquitous, Senso...

In this paper we analyse the security of a cryptographic key assignment scheme, recently proposed by Huang and Chang, that is designed to provide time-constrained hierarchical access control. We show that the new scheme has potential security vulnerabilities, which enable malicious users and attackers to violate the privacy of other users. keywords: Key assignment, Access control.