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Reduction of the secret key length in the perfect cipher by data compression and randomisation. (arXiv:2307.09735v1 [cs.CR])
cs.CR updates on arXiv.org arxiv.org
Perfect ciphers have been a very attractive cryptographic tool ever since C.
Shannon described them. Note that, by definition, if a perfect cipher is used,
no one can get any information about the encrypted message without knowing the
secret key. We consider the problem of reducing the key length of perfect
ciphers, because in many applications the length of the secret key is a crucial
parameter. This paper describes a simple method of key length reduction. This
method gives a …
cipher ciphers compression data data compression definition encrypted information key length message perfect secret secret key tool