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Category > Information Systems Posted 10 Jun 2017 My Price 5.00

Prove that the DES cipher satisfies the complementation property

1. Prove that the DES cipher satisfies the complementation property (see page 229).

2. Let k be the encipherment key for a Caesar cipher. The decipherment key differs; it is 26 – k. One of the characteristics of a public key system is that the encipherment and decipherment keys are different. Why then is the Caesar cipher a classical cryptosystem, not a public key cryptosystem? Be specific.

 

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Alpha Geek
(8)
Status NEW Posted 10 Jun 2017 10:06 AM My Price 5.00

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file 1497090081-2037508_1_636325273462731587_solution.docx preview (1055 words )
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