J Med Syst - A secure and efficient uniqueness-and-anonymity-preserving remote user authentication scheme for connected health care.

Tópicos

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Resumo

Connected health care has several applications including telecare medicine information system, personally controlled health records system, and patient monitoring. In such applications, user authentication can ensure the legality of patients. In user authentication for such applications, only the legal user/patient himself/herself is allowed to access the remote server, and no one can trace him/her according to transmitted data. Chang et al. proposed a uniqueness-and-anonymity-preserving remote user authentication scheme for connected health care (Chang et al., J Med Syst 37:9902, 2013). Their scheme uses the user's personal biometrics along with his/her password with the help of the smart card. The user's biometrics is verified using BioHashing. Their scheme is efficient due to usage of one-way hash function and exclusive-or (XOR) operations. In this paper, we show that though their scheme is very efficient, their scheme has several security weaknesses such as (1) it has design flaws in login and authentication phases, (2) it has design flaws in password change phase, (3) it fails to protect privileged insider attack, (4) it fails to protect the man-in-the middle attack, and (5) it fails to provide proper authentication. In order to remedy these security weaknesses in Chang et al.'s scheme, we propose an improvement of their scheme while retaining the original merit of their scheme. We show that our scheme is efficient as compared to Chang et al.'s scheme. Through the security analysis, we show that our scheme is secure against possible attacks. Further, we simulate our scheme for the formal security verification using the widely-accepted AVISPA (Automated Validation of Internet Security Protocols and Applications) tool to ensure that our scheme is secure against passive and active attacks. In addition, after successful authentication between the user and the server, they establish a secret session key shared between them for future secure communication.

Resumo Limpo

connect health care sever applic includ telecar medicin inform system person control health record system patient monitor applic user authent can ensur legal patient user authent applic legal userpati himselfherself allow access remot server one can trace himher accord transmit data chang et al propos uniquenessandanonymitypreserv remot user authent scheme connect health care chang et al j med syst scheme use user person biometr along hisher password help smart card user biometr verifi use biohash scheme effici due usag oneway hash function exclusiveor xor oper paper show though scheme effici scheme sever secur weak design flaw login authent phase design flaw password chang phase fail protect privileg insid attack fail protect maninth middl attack fail provid proper authent order remedi secur weak chang et al scheme propos improv scheme retain origin merit scheme show scheme effici compar chang et al scheme secur analysi show scheme secur possibl attack simul scheme formal secur verif use widelyaccept avispa autom valid internet secur protocol applic tool ensur scheme secur passiv activ attack addit success authent user server establish secret session key share futur secur communic

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