apert syndrome is a congenital craniosynostosis syndrome comprising of bilateral coronal synostosis , symmetric syndactyly of hands and feet and midface hypoplasia. we present an atypical phenotype of this syndrome with right sided unilateral coronal synostosis. however, type i apert hand and other clinical and radiological features suggestthe diagnosis. genetic analysis revealed an absence of ...

one of the more infrequent congenital diseases with a wide spectrum of symptoms and more complications of the right side of pulmonary artery (63% according to ten harkel) is unilateral pulmonary artery agenesis (upaa). the clinical presentation is variable, and many patients can be asymptomatic for many years and even throughout their lives. although the disease more frequently appears in child...

If the data collected within a sensor network is valuable or should be kept confidential then security measures should protect the access to this data. We focus on user authentication, a central problem when trying to build access control mechanisms for sensor networks. We first sketch some security issues in the context of user authentication in sensor networks. We then introduce the notion of...

Deniable authentication protocol is a new authentication mechanism in secure computer communication, which not only enables an intended receiver to identify the source of a received message but also prevents a third party from identifying the source of the message. In this paper, based on the Diffie-Hellman algorithm, we propose a new simple deniable authentication protocol from a provably secu...

The Extensible Authentication Protocol (EAP) describes a framework that allows the use of multiple authentication mechanisms. This document defines an authentication mechanism for EAP called EAP-EKE, based on the Encrypted Key Exchange (EKE) protocol. This method provides mutual authentication through the use of a short, easy to remember password. Compared with other common authentication metho...

Current Grid software lacks support for authentication techniques other than PKIbased digital certificates. Support for multiple authentication technologies is important, particularly in information Grids, where classified resources/data should enjoy fine-grained protection. This paper describes our work in the design and implementation of a Grid authentication middleware. The solution, called ...

In this work, we propose a host authentication and access control architecture for software defined networks. The key idea is to authenticate at Layer 2, using IEEE 802.1X standard and Extensible Authentication Protocol (EAP). EAP exchanges authentication information between the supplicant host and a RADIUS authentication server. We developed the proposed authenticator as an OpenFlow applicatio...

Authentication primitives should be simple, general, and robust against attack. We describe the authentication mechanisms of Ethos, an experimental, clean-slate operating system that has been designed for security. We reexamine and redesign software layering for authentication, and evaluate the resulting security properties. In Ethos, integrated network security and simplified local authenticat...

To improve the security weaknesses in user authentication system, many biometrics-based user authentication schemes using smart cards have been proposed. Das in 2011, proposed an effective biometric-based remote user authentication scheme using smart cards that can provide strong authentication and mutual authentication, while eliminating the security flaws of Li-Hwang’s scheme. In this paper, ...

If the data collected within a sensor network is valuable or should be kept confidential then security measures should protect the access to this data. We focus on user authentication, a central problem when trying to build access control mechanisms for sensor networks. We first sketch some security issues in the context of user authentication in sensor networks. We then introduce the notion of...