Cryptanalysis on Symmetric Key Techniques Based Authentication Scheme for Wireless Sensor Networks

摘要

In wireless sensor networks, user authentication scheme is a critical and important security issue to prevent adversary's illegal approach to wireless sensors. After Das introduce a user authentication scheme for wireless sensor networks, various studies had proceeded to proposed more secure and efficient authentication scheme but many schemes had security problem on smart card attack. So Chem et al. suggested a secure user authentication scheme against smart card loss attack using symmetric key techniques but this scheme does not still resolve some security vulnerability. So by the cryptanalysis, this paper shows that Chem et al's scheme has problems on perfect forward secrecy, session key exposure by gateway node, anonymity, and the password check.