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On Optimal Information-Theoretically Secure Key Management
2019 16th Canadian Workshop on Information Theory (CWIT), 2019With an underlying secure symmetric cipher of key length l, this paper addresses how best to securely generate, distribute, and maintain a large number Λ of random keys, from an information theoretic perspective, under the practical condition that one can manage only a relatively small number L of shared secret bits K, where L ≪ Λ ≤ 2l.
En-Hui Yang, Xin-Wen Wu
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Nested QPSK Encoding for Information Theoretic Security
2018 IEEE International Conference on Communications (ICC), 2018This paper proposes a method to provide secrecy for digital communications with arbitrarily large quadrature amplitude modulation (QAM) constellations for transmission over a Gaussian fading wiretap channel. This is accomplished by breaking the constellation down into nested quadrature phase-shift keying (QPSK) symbols and randomizing the assignment ...
Gregory T. Rendon +3 more
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INFORMATION THEORETIC APPROACH TO SECURE LSFR CIPHERS
Cryptologia, 1985To break a normal LFSR cipher, a cryptanalyst needs only 2n bits of corresponding plain and ciphertext, where n is the number of stages of the shift register.[l] In this paper, a method of substituting completely random characters into the ciphertext and therefore preventing the encipherment of a full 2n-length sequence (under its proper key) will be ...
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Information Theoretic Security Based on Bounded Observability
2010Under the condition that all users can observe a common object, each using an observation function independently chosen from the same limited set of observation functions, we show necessary and sufficient conditions for users to be able to generate secret keys by public discussion.
Jun Muramatsu +2 more
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An Information-Theoretic Approach for Secure Protocol Composition
2015Privacy protection has become a crucial issue in the information era. In recent years, many protocols have been developed to accomplish computational tasks collaboratively without revealing the participants’ private data. However, developing protocols for each individual application would not be practical.
Yi-Ting Chiang +6 more
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Information-Theoretic Security in BB84 QKD
2023 33rd International Telecommunication Networks and Applications Conference, 2023Shawn A. Prestridge +2 more
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An Overview of Information-Theoretic Security and Privacy: Metrics, Limits and Applications
IEEE Journal on Selected Areas in Information Theory, 2021Lalitha Sankar +2 more
exaly
Information-theoretic metrics for security and privacy.
2015In this thesis, we study problems in cryptography, privacy and estimation through the information-theoretic lens. We introduce information-theoretic metrics and associated results that shed light on the fundamental limits of what can be learned from noisy data.
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