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Cryptanalysis of 'An Improved Timestamp-Based Remote User Authentication Scheme'

机译:密码分析“改进的基于时间戳的远程用户身份验证方案”

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With the popularity of Internet technology,remote user authentication is receiving more and more attention than before.Recently,Awasthi et al.analysed weakness of the timestamp-based authentication scheme proposed by Shen et al.and proposed an improved scheme to prevent its forgery attacks.They claimed that their scheme is secure against forged login attack,provides forward secrecy,and has better performance than that of Shen et al.’s scheme without increasing any additional computations.In this paper,we show that the improved scheme proposed by Awasthi et al.is vulnerable to attacks like smart card loss attack,man-in-the-middle attack,IDtheft attack,etc.Further,we explain how their improved scheme inherits weakness from the original scheme and falls prey to some other attacks also.
机译:随着Internet技术的普及,远程用户认证受到了越来越多的关注。最近,Awasthi等人分析了Shen等人提出的基于时间戳的认证方案的弱点,并提出了一种改进的方案来防止其伪造攻击。他们声称他们的方案是安全的,可以防止伪造的登录攻击,提供前向保密性,并且比Shen等人的方案具有更好的性能,而无需增加任何额外的计算。在本文中,我们证明了Awasthi提出的改进方案等人容易受到智能卡丢失攻击,中间人攻击,IDtheft攻击等攻击。此外,我们解释了它们的改进方案如何继承了原始方案的弱点,也成为其他攻击的牺牲品。

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