OTP_SAM: DHCP security authentication model based on OTP

Abstract

The DHCP (Dynamic Host Configuration Protocol) protocol is not only convenient for the network administrator to manage IP address and user to use IP address, but also solves some of the problems that the shortage of IPv4 address causes. With the development of information technology and network, the DHCP has been widely used. However, due to the protocol without security mechanism, the potential security vulnerabilities such as illegal DHCP, Mac address disguise, replay attack and DoS attack are becoming more and more prominent. Based on the OTP (One Time Password), a security authentication model that is called OTP_SAM is mainly proposed in this paper. The model combines with the current system time to compute the one-time key, and then use the key to generate the message authentication code by hash algorithm. Finally, the model achieves the objective of the security authentication through the verification of the authentication code in Option180. Experimentation indicates that OTP_SAM ensures the security characteristic, as well has higher efficiency.