The main contributions of this paper are to analyze an authentication and key distribution protocol for mobile computing proposed by Beller Chang and Yacobi in and reveal two problems associated with their protocol to propose a new authentication and key distribution protocol that utilizes a broadcast channel in a mobile network A particularly interesting feature of the new proposal is that it ...

Handover authentication protocol is a promising access control technology in the fields of WLANs and mobile wireless sensor networks. In this paper, we firstly review an efficient handover authentication protocol, named PairHand, and its existing security attacks and improvements. Then, we present an improved key recovery attack by using the linearly combining method and reanalyze its feasibili...

Remote Authentication Dial In User Service (RADIUS) Status of this Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is ...

Deniable authentication is a new protocol which not only enables a receiver to identify the source of a received message but also prevents a third party from identifying the source of the message. The proposed protocol in this paper makes use of bilinear pairings over elliptic curves, as well as the Diffie-Hellman key exchange protocol. Besides the security properties shared with previous authe...

In this paper, we describe a secure cluster-routing protocol based on a multilayer scheme in ad hoc networks. This work provides scalable, threshold authentication scheme in ad hoc networks. We present detailed security threats against ad hoc routing protocols, specifically examining cluster-based routing. Our proposed protocol, called “authentication based on multilayer clustering for ad hoc n...

The IEEE Standard 802.11 is one of the most widely adopted mechanisms for WLANs, it provides comprehensive guidelines for their operational smoothness. 802.11 suffered from limited data confidentiality and cumbersome procedure for exchange of security parameters. In response to the security limitations in 802.11, IEEE introduced 802.1x for authentication and key management. The 802.1x is a port...

This document defines an extension to the Remote Authentication Dial-In User Service (RADIUS) protocol to enable support of Digest Authentication, for use with HTTP-style protocols like the Session Initiation Protocol (SIP) and HTTP.

This paper analyses the authentication and key agreement (AKA) protocol for UMTS mobile networks, where a new authentication protocol which is able to reduce the network traffic and signaling message between entities, and consequently the bottleneck at authentication centre is avoided, this is achieved by reducing the number of messages between mobile and authentication centre, and then reducin...

Designing a user authentication protocol for wireless sensor networks is a difficult task because wireless networks are susceptible to attacks and sensor node has limited energy, processing and storage resources. Recently, several authentication schemes have been proposed. This short paper shows some security problems and design weaknesses in those schemes. Furthermore, an enhanced two-factor u...

Password-based authentication protocols are currently the conventional authentication protocols in many distributed systems. However, the security of these protocols is falling behind the times because more and more attacks can now break them. The security weaknesses of the Simple And Secure (SAS) protocol, the Optimal Strong-Password Authentication (OSPA) protocol, and the revised SAS protocol...