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- W2951272204 abstract "In this paper, information theoretic cryptography is discussed based on conditional Renyi entropies. Our discussion focuses not only on cryptography but also on the definitions of conditional Renyi entropies and the related information theoretic inequalities. First, we revisit conditional Renyi entropies, and clarify what kind of properties are required and actually satisfied. Then, we propose security criteria based on Renyi entropies, which suggests us deep relations between (conditional) Renyi entropies and error probabilities by using several guessing strategies. Based on these results, unified proof of impossibility, namely, the lower bounds on key sizes are derived based on conditional Renyi entropies. Our model and lower bounds include the Shannon’s perfect secrecy, and the min-entropy based encryption presented by Dodis, and Alimomeni and Safavi-Naini at ICITS2012. Finally, a new optimal symmetric key encryption protocol achieving the lower bounds is proposed." @default.
- W2951272204 created "2019-06-27" @default.
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- W2951272204 date "2013-01-01" @default.
- W2951272204 modified "2023-10-16" @default.
- W2951272204 title "Information Theoretic Security for Encryption Based on Conditional Renyi Entropies." @default.
- W2951272204 hasPublicationYear "2013" @default.
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