Abstract
Rapid development of wireless networks brings about many security problems in Portable Communication Systems (PCS), which can provide mobile users with an opportunity to enjoy global roaming services. In this regard, designing a secure user authentication scheme, especially for recognizing legal roaming users is indeed a challenging task. Recently, C-C Lee et al. proposed such scheme, which is claimed to be an improvement of T. F. Lee et al.’s protocol. However, in this article, we reveal that the scheme proposed by C-C Lee et al. still suffers from certain weaknesses like vulnerable to DoS attack, no perfect forward secrecy, loss of Untraceability, etc. Hence, C-C Lee et al.’s delegation-based protocol cannot guarantee secure communication for PCS environment.DOI: http://dx.doi.org/10.5755/j01.itc.44.3.9777
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
