International Journal of Security and Its Applications Vol. 9, No. 4 (2015), pp. 271-278 http://dx.doi.org/10.14257/ijsia.2015.9.4.25 ISSN: 1738-9976 IJSIA Copyright ⓒ 2015 SERSC Authentication Model for Location based Queries Roshan S. Deshmukh 1 and Dr. D. G. Harkut 2 1 M.E II Year Department of Computer Science and Engineering Prof Ram Meghe College of Engineering and Management Badnera-Amravati, India 2 Associate Professor, Department of Computer Science and Engineering Prof Ram Meghe College of Engineering and Management Badnera-Amravati, India roshan.deshmukh@gmail.com, dg.harkut@gmail.com Abstract The popularity of location-based services leads to serious concerns on user privacy. It is very easy for a person to know his/her location with the help of devices having GPS facility. When user’s location is provided to Location Based Services (LBS), it is possible for user to know all location dependent information like location of friends or Nearest Restaurant, weather or traffic conditions. The massive use of mobile devices paves the way for the creation of wireless networks that can be used to exchange information. When the exchange of information is done amongst entrusted parties, the privacy of the user could be in harmful. Existing protocol doesn’t work on many different mobile devices and another issue is that, Location Server (LS) should provide misleading data to user. This gives rise to new challenges and reconsideration of the existing privacy metrics. Keywords: Location Based Services, Location Server 1. Introduction There are increasing mobile phone users worldwide. So location technologies can be currently used by wireless carrier operators to provide a good forecast of the user location. Now a day, numbers of users are using location based services which can provide location-aware information. What is Location Based Service (LBS)? Location based service is a service accessible with mobile phones; pocket PC’s, GPS devices. It is like Google maps, map request. Mobile devices with positioning capabilities (e.g. GPS) facilates access to location based services that provide information relevant to the user’s geo -spatial context. Number of users uses these services for retrieving Points of Interest from their current location. LBS is question primarily based and provides the top user with helpful data like “Where is that the nearest Hotel?” essentially once user used specific location based service or registered for that, then LBS will offer variety of different services like delivery coupons or different selling data to client United Nations agency is during a specific geographic region. Now a day, there are number of user takes advantage of location based services and graph is steal increasing. But there are certain problems while using LBS that it may collect and use vast amount of information about consumer for a wide range of purpose. Location information is sensitive and users don’t want to share such information to untrustworthy LBS servers. Because number of malicious adversaries may obtain more private knowledge of the users also, queries fire by the user having sensitive information about individuals, including health condition, lifestyle habits. So he doesn’t want to disclose it.