Revealing information while preserving privacy
Symposium on Principles of Database Systems, pp. 202-210, 2003.
integrity and securitysubset-sums with noisedata reconstruction
We examine the tradeoff between privacy and usability of statistical databases. We model a statistical database by an n-bit string d1,..,dn, with a query being a subset q ⊆ [n] to be answered by Σiεq di. Our main result is a polynomial reconstruction algorithm of data from noisy (perturbed) subset sums. Applying this reconstruction algori...More