The Shannon cipher system with a guessing wiretapper
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چکیده
منابع مشابه
The Shannon Cipher System with a Guessing Wiretapper
The Shannon theory of cipher systems is combined with recent work on guessing values of random variables. The security of encryption systems is measured in terms of moments of the number of guesses needed for the wiretapper to uncover the plaintext given the cryptogram. While the encrypter aims at maximizing the guessing effort, the wiretapper strives to minimize it, e.g., by ordering guesses a...
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In this paper we discuss the processes in the Shannon cipher system with discrete memoryless source and a guessing wiretapper. The wiretapper observes a cryptogram of N vector of ciphered messages in the public channel and tries to guess successively the vector of messages within given distortion level ∆ and small probability of error less than exp{−NE} with positive reliability index E. The se...
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Rate-distortion theory is considered for the Shannon cipher system (SCS). The admissible region of cryptogram rateR, key rate Rk, legitimate receiver’s distortion D, and wiretapper’s uncertainty h is determined for the SCS with a noisy channel. Furthermore, inner and outer bounds of the admissible region of R, Rk, D, and wiretapper’s attainable minimum distortion ~ D are derived for the SCS wit...
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ژورنال
عنوان ژورنال: IEEE Transactions on Information Theory
سال: 1999
ISSN: 0018-9448
DOI: 10.1109/18.782106