Cryptology ePrint Archive: Report 2014/303

On the security of Xu et al.'s authentication and key agreement scheme for telecare medicine information systems

SK Hafizul Islam

Abstract: In 2014, Xu et al. proposed a two-factor mutual authentication and key agreement scheme for telecare medicine information system (TIMS) based on elliptic curve cryptography (ECC). However, it has been shown that Xu et al.'s scheme is not suitable for practical use as it is many problems. As a remedy, an improved scheme is proposed with better security and functionality attributes.

Category / Keywords: Anonymity; User authentication; Security; Smartcard, Cryptanalysis; Hash function; Password.

Date: received 29 Apr 2014, last revised 1 May 2014, withdrawn 26 May 2014

Contact author: hafi786 at gmail com

Available format(s): (-- withdrawn --)

Version: 20140526:164257 (All versions of this report)

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