Cryptanalysis of Modified STPKE’ Protocol

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  • H.K. Pathak S.o.S in Mathematics, Pt. Ravishanker Shukla University, Raipur (C. G.)-492010, India
  • Manju Sanghi Departmentof Applied Mathematics, Rungta College of Engineering & Technology, Bhilai (C. G.)-492006, India

Klíčová slova:

Password based key exchange protocol, password guessing attacks, man in the middle attack

Abstrakt

 In 2007, Lu and Cao proposed a simple 3-party authenticated key exchange (S-3PAKE) protocol. Kim and Koi found that this protocol cannot resist undetectable online password guessing attacks and gave fixed STPKE’ protocol as a countermeasure using exclusive-or operation. Recently, Tallapally and Padmavathy found that STPKE’ is still vulnerable to undetectable online password guessing attack and gave a modified STPKE’ protocol. In this article, we show that the improvement that they claim is still vulnerable to man in the middle attack. Keywords: Password based key exchange protocol, password guessing attacks, man in the middle attack 

Stažení

Publikováno

2012-04-10

Číslo

Vol 3 No 1 (2012)

Sekce

Review Articles

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