P.Abirami, R.BhuvanaPriya
1PG Student STET Women’s college, mannargudi
2Professor of CS department, STET Women’s college,
mannargudi
A Trustworthy
Service Evaluation (TSE) system to enable users to share service reviews in
service-oriented mobile social networks (S-MSNs). Each service provider
independently maintains a TSE for itself, which collects and stores users’
reviews about its services without requiring any third trusted authority. The
service reviews can then be made available to interested users in making wise
service selection decisions. Identify three unique service review attacks,
i.e., link ability, rejection, and modification attacks, and develop
sophisticated security mechanisms for the TSE to deal with these attacks. The basic TSE (bTSE) enables users to
distributed and cooperatively submit their reviews in an integrated chain form by
using hierarchical and aggregate signature techniques. It restricts the service
providers to reject, modify, or delete the reviews. Thus, the integrity and
authenticity of reviews are improved. Further, extend the bTSE to a
Sybil-resisted TSE (SrTSE) to enable the detection of two typical Sybil
attacks.In the SrTSE, if a user generates multiple reviews toward a vendor in a
predefined time slot with different pseudonyms, the real identity of that user
will be revealed. Through security Analysis and numerical results, that the
bTSE and the SrTSE effectively resist the Service review attacks and the SrTSE
additionally detect the Sybil attacks in an efficient manner. Through
performance evaluation, the bTSE achieves better performance in terms of
submission rate and delay than a service review system that does not adopt user
cooperation
