Francesco Aldà

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We investigate the general problem of function release under differential privacy. First we develop a mechanism leveraging the iterated Bernstein operator for polynomial approximation of the target function, followed by coefficient perturbation. We then prove ε-differential privacy using access to the target's sensitivity and function evaluation(More)
The Partial Sum Attack is one of the most powerful attacks , independent of the key schedule, developed in the last 15 years against reduced-round versions of AES. In this paper, we introduce a slight improvement to the basic attack which lowers the number of chosen plaintexts needed to successfully mount it. Our version of the attack on 6-round AES can be(More)
We define the notions of weak and strong usefulness and investigate the question whether a randomized response scheme can combine two conflicting goals, namely being weakly (or even strongly) useful and, at the same time, providing ε-differential privacy. We prove the following results. First, if a class F cannot be weakly SQ-learned under the uniform(More)
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