J Med Syst - On the security flaws in ID-based password authentication schemes for telecare medical information systems.

Tópicos

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Resumo

Telecare medical information systems (TMIS) enable healthcare delivery services. However, access of these services via public channel raises security and privacy issues. In recent years, several smart card based authentication schemes have been introduced to ensure secure and authorized communication between remote entities over the public channel for the (TMIS). We analyze the security of some of the recently proposed authentication schemes of Lin, Xie et al., Cao and Zhai, and Wu and Xu's for TMIS. Unfortunately, we identify that these schemes failed to satisfy desirable security attributes. In this article we briefly discuss four dynamic ID-based authentication schemes and demonstrate their failure to satisfy desirable security attributes. The study is aimed to demonstrate how inefficient password change phase can lead to denial of server scenario for an authorized user, and how an inefficient login phase causes the communication and computational overhead and decrease the performance of the system. Moreover, we show the vulnerability of Cao and Zhai's scheme to known session specific temporary information attack, vulnerability of Wu and Xu's scheme to off-line password guessing attack, and vulnerability of Xie et al.'s scheme to untraceable on-line password guessing attack.

Resumo Limpo

telecar medic inform system tmis enabl healthcar deliveri servic howev access servic via public channel rais secur privaci issu recent year sever smart card base authent scheme introduc ensur secur author communic remot entiti public channel tmis analyz secur recent propos authent scheme lin xie et al cao zhai wu xus tmis unfortun identifi scheme fail satisfi desir secur attribut articl briefli discuss four dynam idbas authent scheme demonstr failur satisfi desir secur attribut studi aim demonstr ineffici password chang phase can lead denial server scenario author user ineffici login phase caus communic comput overhead decreas perform system moreov show vulner cao zhai scheme known session specif temporari inform attack vulner wu xus scheme offlin password guess attack vulner xie et al scheme untrac onlin password guess attack

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