The wireless communication with delivering variety of services to users is growing rapidly in recent years. The third generation of cellular networks (3G), and local wireless networks (WLAN) are the two widely used technologies in wireless networks. 3G networks have the capability of covering a vast area; while, WLAN networks provide higher transmission rates with less coverage. Since the two n...

This paper adopts the Distributed Lightweight Kerberos (DLK) protocol, which is a result of enhancing the well-known Kerberos protocol. One of the advantages of the DLK protocol is that it addresses mutual authentication and confidentiality challenges while reducing the required number of messages to securely communicate with multiple service providers. In this paper we formally analyze and ver...

Many applications in the internet using Password for identify users. So, this password must be strong and safe to avoid unauthorized The critical issue many such as web-sites data base systems is authentication code (PAC). In paper, PAC between two parties confirm them based mutual text has presented. Two factors best solution field. But more secure efficient a legitimate user needs make sure a...

The EPC Class-1 Generation-2 RFID standard provides little security, as has been shown in previous works such as [S. Karthikeyan, M. Nesterenko, RFID security without extensive cryptography, in: Proceedings of the 3rd ACM Workshop on Security of Ad Hoc and Sensor Networks, 2005, pp. 63–67; D.N. Duc, J. Park, H. Lee, K. Kim, Enhancing security of EPCglobal Gen-2 RFID tag against traceability and...