TITLE:
On the Security of Anonymous Authentication Protocol for Mobile Pay-TV
AUTHORS:
Walid I. Khedr
KEYWORDS:
Authentication; Conditional Access Systems; Mobile Pay-TV Services; Privacy
JOURNAL NAME:
Journal of Information Security,
Vol.4 No.4,
September
30,
2013
ABSTRACT: One of the promising multimedia services is the mobile pay-TV
service. Due to its wireless nature, mobile pay-TV is vulnerable to attacks
especially during hand-off. In 2011, an efficient anonymous authentication
protocol for mobile pay-TV is proposed. The authors claim that their scheme
provides an anonymous authentication to users by preventing intruders from
obtaining users’ IDs during the mutual authentication between mobile subscribers and
head end systems. However, after analysis, it was found that the scheme does
not provide anonymous authentication and users can be easily tracked while using
their anonymous identity. The scheme is also subject to denial of service
attack. In this paper the deficiencies of the original scheme are demonstrated, and then a proposed improved scheme that eliminates these deficiencies is
presented.