CVC-STAR: Protecting data confidentiality while increasing flexibility and quality of responses
by Daniel O. Rice, Robert Garfinkel, Ram Gopal
International Journal of Information and Computer Security (IJICS), Vol. 2, No. 2, 2008

Abstract: Confidentiality via Camoufiage (CVC) provides a practical method for giving unlimited, correct, numerical responses to ad-hoc queries to an on-line database, while not compromising confidential numerical data. CVC-POL guarantees confidentiality by hiding protected data points in a polytope and generating query answers over the polytope. In this paper we introduce CVC-STAR, which protects confidential data using a set defined by a union of line segments resembling a star. Solutions for determining CVC-STAR interval answers are given for several common query types. Computational experience shows that the answers for CVC-STAR are superior to those of CVC-POL while providing more robust confidentiality protection.

Online publication date: Mon, 26-May-2008

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