Title
Meetings through the cloud: Privacy-preserving scheduling on mobile devices
Abstract
Abstract: Mobile devices are increasingly being used to store and manage users' personal information, as well as to access popular third-party context-based services. Very often, these applications need to determine common availabilities among a set of user schedules, in order to allow colleagues, business partners and people to meet. The privacy of the scheduling operation is paramount to the success of such applications, as often users do not want to share their personal schedule details with other users or third-parties. In this paper, we propose practical and privacy-preserving solutions for mobile devices to the server-based scheduling problem. Our three novel algorithms take advantage of the homomorphic properties of well-known cryptosystems in order to privately and efficiently compute common user availabilities. We also formally outline the privacy requirements in such scheduling applications and we implement our solutions on real mobile devices. The experimental measurements and analytical results show that the proposed solutions not only satisfy the privacy properties but also fare better, in regard to computation and communication efficiency, compared to other well-known solutions. Finally, we assess the utility and expectations, in terms of privacy and usability, of the proposed solutions by means of a targeted survey and user-study of mobile-phone users.
Year
DOI
Venue
2011
10.1016/j.jss.2011.04.027
Journal of Systems and Software
Keywords
Field
DocType
common availability,common user availability,mobile devices,privacy property,scheduling operation,privacy requirement,scheduling application,client-server architecture,activity scheduling,proposed solution,privacy-preserving scheduling,homomorphic encryption,mobile device,server-based scheduling problem,real mobile device,client server architecture
Mobile search,Job shop scheduling,Scheduling (computing),Computer science,Computer security,Mobile device,Schedule,Personally identifiable information,Cloud computing,Client–server model
Journal
Volume
Issue
ISSN
84
11
The Journal of Systems & Software
Citations 
PageRank 
References 
14
0.70
16
Authors
7
Name
Order
Citations
PageRank
Igor Bilogrevic119513.82
Murtuza Jadliwala226625.26
Praveen Kumar3635.42
Sudeep Singh Walia4141.04
J. -P. Hubaux510006772.23
Imad Aad61150104.13
Valtteri Niemi733142.03