Quantitative analysis of the leakage of confidential data

Basic information theory is used to analyse the amount of confidential information which may be leaked by programs written in a very simple imperative language. In particular, a detailed analysis is given of the possible leakage due to equality tests and if statements. The analysis is presented as a set of syntax-directed inference rules and can readily be automated

Some Empirical Criteria for Attributing Creativity to a Computer Program

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