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Identity in the Information Society

, Volume 2, Issue 3, pp 205–220

First Online: 01 October 2009Received: 24 March 2009Accepted: 26 July 2009


A method for sharing private data through personalized searches is described. This method enables users to retrieve access-controlled private data as well as publicly available data by submitting a single query to a conventional search engine. Seamless integration of the method into current search services through a prototype on the Mozilla Firefox web browser, without any changes to existing search functions, such as crawling, indexing, and matching, is also described. Evaluations showed that the additional storage requirement is only 10% and that the system implementing the method responds in 10 s with 1,000 dummy results for anonymization.

KeywordsPrivacy Digital identity Identity-based hashing Private information retrieval Multi-factor authentication Personalized search AbbreviationsAJAXAsynchronous JavaScript and XML

HTTPHyperText Transfer Protocol

IBEIdentity-Based Encryption

PIMPersonal Information Management

PIRPrivacy Information Retrieval

PGPPretty Good Privacy

PSEPersonalized Search Engine

SAMLSecurity Assertion Markup Language

SNSSocial Network Services

SSLSecure Socket Layer

TLSTransport Layer Security

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Author: Kei Karasawa


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