Jukka A. Koskinen

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Two public-key 0–1 knapsack cryptosystems are proposed, that have so high a density and use so weak a modular multiplication as a trapdoor, that known attacks can be avoided. Decryption is fairly slow and may produce more than one decipherment, but all alternative decipherments can be found. Disambiguating protocols are needed to determine the correct(More)
This article looks at the information security of private computer users at home and on the move, and describes the situation in Finland as observed in six surveys conducted in 2012 2015 at Tampere University of Technology where students have interviewed citizens. The results are in line with other studies of information security culture in society. This(More)
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