Authors:
Leyli Javid Khayati
1
;
Erkay Savaş
1
;
Berkant Ustaoğlu
2
and
Cengiz Örencik
1
Affiliations:
1
Sabancı University, Turkey
;
2
Izmir Institute of Technology, Turkey
Keyword(s):
IPTV, Targeted Advertising, Privacy, Cryptography, Cloud Server.
Related
Ontology
Subjects/Areas/Topics:
Data and Application Security and Privacy
;
Data Protection
;
Information and Systems Security
;
Information Assurance
;
Information Hiding
;
Privacy
;
Secure Cloud Computing
;
Security Protocols
Abstract:
In this paper, we present a privacy-preserving scheme for targeted advertising via the Internet Protocol
TV (IPTV). The scheme uses a communication model involving
a collection of viewers/subscribers, a content provider (IPTV), an advertiser, and a cloud server. To provide high
quality directed advertising service, the advertiser can utilize not only demographic information of subscribers, but also their watching habits. The latter includes watching history, preferences for IPTV content and watching rate, which are published on the cloud server periodically (e.g. weekly) along with anonymized demographics. Since the published data may leak sensitive information about subscribers, it is safeguarded using cryptographic techniques in addition to the anonymization of demographics. The techniques used by the advertiser, which can be manifested in its queries to the cloud, are considered (trade) secrets and therefore are protected as well. The cloud is oblivious to the published data, the
queries of the advertiser as well as its own responses to these queries. Only a legitimate advertiser, endorsed with a so-called {\em trapdoor} by the IPTV, can query the cloud and utilize the query results. The performance of the proposed scheme is evaluated with experiments, which show that the scheme is suitable for practical usage.
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