Titlebook: An Introduction to Cryptology; Henk C. A. Tilborg Book 1988 Kluwer Academic Publishers 1988 computer.computer science.computer-aided desig

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The Springer International Series in Engineering and Computer Sciencehttp://image.papertrans.cn/a/image/155203.jpg

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An Introduction to Cryptology978-1-4613-1693-0Series ISSN 0893-3405

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,Struktur und Entwicklung der Bevölkerung,e 2.1 we could find the key 19, because BRUTUS was the only word in the table that made sense. This structure in the plaintext remains present in the ciphertext (it is hoped in a hidden form). If the extra information arising from this structure exceeds our uncertainty about the key, one may be able to determine the ciphertext!

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Shannon Theory,e 2.1 we could find the key 19, because BRUTUS was the only word in the table that made sense. This structure in the plaintext remains present in the ciphertext (it is hoped in a hidden form). If the extra information arising from this structure exceeds our uncertainty about the key, one may be able to determine the ciphertext!

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Die Sozialstruktur DeutschlandsIn modern day communication systems the conventional cryptosystems turned out to have two disturbing disadvantages.