Abstract—With the growing popularity of sensor-based monitoring devices, sensor networks are becoming an essential part of wireless heterogeneous networks and numerous researches have been widely studied in recent years. Recently, Das et al. proposed a dynamic password-based user authentication scheme with dynamic node addition for hierarchical wireless sensor networks (WSNs). They claimed that their scheme achieves better security as compared to those for other existing password-based user authentication approaches. However, we observe that Das et al.'s scheme is vulnerable to smart card breach attack, privileged-insider attack, and many logged-in users' attack and is not easily reparable.
Index Terms—Cryptanalysis, hierarchical wireless sensor networks, password, smart cards, user Authentication.
Chun-Ta Li, Chin-Wen Lee, Ping-Nan Chiu and Cheng-Yi Wu are with the Tainan University of Technology, 529 Zhongzheng Road, Tainan City 71002, Taiwan (R.O.C.) (e-mail: th0040@mail.tut.edu.tw).
Chi-Yao Weng is with the National Sun Yat-sen University, 70 Lienhai Road, Kaohsiung City 80424, Taiwan (R.O.C.) (e-mail: cyweng@mail.cse.nsysu.edu.tw).
Cheng-Chi Lee is with the Fu Jen Catholic University, 510 Jhongjheng Road, New Taipei City 24205, Taiwan (R.O.C.) (Corresponding author‟s e-mail: cclee@mail.fju.edu.tw).
[PDF]
Cite:Chun-Ta Li, Chi-Yao Weng, Cheng-Chi Lee, Chin-Wen Lee, Ping-Nan Chiu, and Cheng-Yi Wu, "Security Flaws of a Password Authentication Scheme for Hierarchical WSNs," Journal of Advances in Computer Networks vol. 1, no. 2, pp. 121-124, 2013.