An enhanced version of key agreement system with user privacy for telecare medicine information systems

Abstract

In the e-technology world, the growth of online system usage is very high. Hence it is also necessary that security and privacy of users must secure. In the telecare medical system, a remote patient and the medical server requires to authenticate each other over an insecure channel. In 2014, Li et al. proposed an enhanced scheme for telecare medicine system and claimed that it’s secure against various attacks. However, in this paper, we identified that Li et al.’s scheme cannot resist against Temporary Information, Forgery, Stolen Smart Card attack. Therefore, in this paper proposed scheme to be secure against the mentioned attacks and also it requires less number of operations. Thus we have achieved more security with less computation overhead.