NDLI: A Distance-Sensitive Attribute Based Cryptosystem for Privacy-Preserving Querying

Content Provider	IEEE Xplore Digital Library
Author	Wei Sun Rane, S.
Copyright Year	2012
Abstract	We propose an attribute-based cryptosystem in which decryption is conditional on the distance between attributes. Alice constructs a cipher text that consists of an encrypted message and a hidden attribute vector. Bob is able to decrypt Alice's message if and only if his attribute vector is within a specified maximum distance from Alice's attribute vector. We provide constructions for Euclidean and Hamming distances. The cryptosystem has advantages for privacy preserving querying. In particular, all parties can broadcast their respective cipher texts or store them on a database server. Then, a client -- not necessarily belonging to the original set of parties -- can independently and privately query the database server for cipher texts whose attributes are within some small distance from its own attribute. We describe an application of this cryptosystem in which a customer obtains recommendations from other customers of a movie rental company in a privacy-preserving manner.
Starting Page	386
Ending Page	391
File Size	228841
Page Count	6
File Format	PDF
ISBN	9781467316590
ISSN	19457871
DOI	10.1109/ICME.2012.64
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-07-09
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Motion pictures Vectors Encryption Protocols Servers Privacy preserving querying Attribute-based encryption Bilinear maps
Content Type	Text
Resource Type	Article

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