5 papers
What Do Our Choices Say About Our Preferences?
Krzysztof Grining, Marek Klonowski, Małgorzata Sulkowska
Taking online decisions is a part of everyday life. Think of buying a house, parking a car or taking part in an auction. We often take those decisions publicly, which may breach ou…
Probabilistic Counters for Privacy Preserving Data Aggregation
Dominik Bojko, Krzysztof Grining, Marek Klonowski
Probabilistic counters are well-known tools often used for space-efficient set cardinality estimation. In this paper, we investigate probabilistic counters from the perspective of…
How to Cooperate Locally to Improve Global Privacy in Social Networks? On Amplification of Privacy Preserving Data Aggregation
Krzysztof Grining, Marek Klonowski, Małgorzata Sulkowska
In many systems privacy of users depends on the number of participants applying collectively some method to protect their security. Indeed, there are numerous already classic resul…
Towards Extending Noiseless Privacy -- Dependent Data and More Practical Approach
Krzysztof Grining, Marek Klonowski
In 2011 Bhaskar et al. pointed out that in many cases one can ensure sufficient level of privacy without adding noise by utilizing adversarial uncertainty. Informally speaking, thi…
Practical Fault-Tolerant Data Aggregation
Krzysztof Grining, Marek Klonowski, Piotr Syga
During Financial Cryptography 2012 Chan et al. presented a novel privacy-protection fault-tolerant data aggregation protocol. Comparing to previous work, their scheme guaranteed pr…