NDLI: An encryption-based approach for protecting privacy in network-based location systems

Content Provider	IEEE Xplore Digital Library
Author	Shih-Hau Fang Wei-Jia Lai Yi-Chung Liang
Copyright Year	2011
Description	Author affiliation: Department of Electrical Engineering, Yuan-Ze University, Taiwan (Shih-Hau Fang; Wei-Jia Lai; Yi-Chung Liang)
Abstract	Since the privacy of the users can be threatened by location-based services (LBS), many privacy preserving approaches have been proposed to protect the user location information during a request for LBS. Nevertheless, the user's location information may still be exposed during positioning because of the nature of the unreliable wireless environment. This paper presents a secure network-based positioning system that can protect the privacy of the users by encrypting the location estimation. To preserve privacy, the proposed method exposes only an encrypted version of the user location based on asymmetric encryption schemes. When a network of base stations sends back the estimated result, it uses the public key to encrypt the data. The device will then use its private key to decrypt the location information. This intelligent scheme prevents the exposure of location information in the radio transmission and thus, protects the location privacy. Our experimental results show that, although the encryption in mobile device results in extra energy consumption, the computational time is acceptable in current high-level devices. The positioning accuracy is also comparable to the unencrypted results with a suitable choice of the scaling factor in the adopted RSA encryption techniques.
Starting Page	377
Ending Page	380
File Size	383591
Page Count	4
File Format	PDF
ISBN	9781457703058
ISSN	21601348
e-ISBN	9781457703089
DOI	10.1109/ICMLC.2011.6016714
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-07-10
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Cryptography RSA Security mobile phone positioning location fingerprinting Encryption and Decryption
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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