Trends and Development of Information-Theoretic Cryptography


IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E98-A   No.1   pp.16-25
Publication Date: 2015/01/01
Online ISSN: 1745-1337
Type of Manuscript: INVITED PAPER (Special Section on Cryptography and Information Security)
information-theoretic cryptography,  Shannon entropy,  Rényi entropy,  encryption,  authentication,  

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This paper briefly deals with a wide range of topics in information-theoretic cryptography. First, we focus on the results on symmetric-key encryption and authentication codes, since these protocols are fundamental in the field and well studied in the frameworks by Shannon and Simmons, respectively. Secondly, we explain several existing assumptions and security criteria whose merit mainly lies in realizing cryptographic protocols with short/weak shared secret-keys, correlated weak secret-keys, or no shared secrets. Thirdly, we consider research themes by three aspects for further development of information-theoretic cryptography. Finally, we refer to trends of technical approaches in information-theoretic cryptography and explain our recent results brought by using the approach.