Abstract
Controlled query evaluation enforces security policies for confidentiality in information systems. It deals with users who may apply background knowledge to infer additional information from the answers to their queries. For each query the correct answer is first judged by some censor and then – if necessary – appropriately modified to preserve security. In previous approaches, modification has been done uniformly, either by lying or by refusal. A drawback of lying is that all disjunctions of secrets must always be protected. On the other hand, refusal may hide an answer even when the correct answer does not immediately reveal a secret. In this paper we introduce a hybrid answer modification method that appropriately combines lying and refusal. We prove that the new method is secure under the models of known potential secrets and of known secrecies, respectively. Furthermore, we demonstrate that the combined approach can be more cooperative than uniform lying and uniform refusal, and enjoys the advantages of both.
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References
J. Biskup, For unknown secrecies refusal is better than lying, Data and Knowledge Engineering 33 (2000) 1–23.
J. Biskup and P.A. Bonatti, Lying versus refusal for known potential secrets, Data and Knowledge Engineering 38 (2001) 199–222.
J. Biskup and P.A. Bonatti, Confidentiality policies and their enforcement for controlled query evaluation, in: Proc. of ESORICS 2002, Lecture Notes in Computer Science, Vol. 2502 (Springer, New York, 2002) pp. 39–54.
P.A. Bonatti, S. Kraus and V.S. Subrahmanian, Foundations of secure deductive databases, IEEE Transactions on Knowledge and Data Engineering 7(3) (1995) 406–422.
S. Dawson, S. De Capitani di Vimercati, P. Lincoln and P. Samarati, Minimal data upgrading to prevent inference and association attacks, in: Proc. of the 18th ACM SIGMOD-SIGACT-SIGART Symposium on Principles of Database Systems (PODS) (1999) pp. 114–125.
J.W. Lloyd, Foundations of Logic Programming (Springer, Berlin, 1987).
X. Quian, View-based access control with high assurance, in: Proc. of the 1996 IEEE Symposium on Security and Privacy (1996) pp. 85–93.
J.R. Shoenfield, Mathematical Logic (Addison-Wesley, Reading, MA, 1967).
G.L. Sicherman, W. de Jonge and R.P. van de Riet, Answering queries without revealing secrets, ACM Transactions on Database Systems 8(1) (1983) 41–59.
M.E. Stickel, Elimination of inference channels by optimal upgrading, in: Proc. of the 1994 IEEE Symposium on Security and Privacy (1994) pp. 168–174.
T.A. Su and G. Ozsoyoglu, Controlling FD and MVD inferences in multilevel relational database systems, IEEE Transactions on Knowledge and Data Engineering 3(4) (1991) 474–485.
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Biskup, J., Bonatti, P.A. Controlled Query Evaluation for Known Policies by Combining Lying and Refusal. Annals of Mathematics and Artificial Intelligence 40, 37–62 (2004). https://doi.org/10.1023/A:1026106029043
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DOI: https://doi.org/10.1023/A:1026106029043