Problem1 how many permutations are used in a des cipher, Ask an Expert

Engineering

Problem

1. How many permutations are used in a DES cipher algorithm? How many permutations are used in the round-key generator?

2. How many exclusive-or operations are used in the DES cipher?

3. Why does the DES function need an expansion permutation?

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Computer Engineering, Engineering

Category:- Computer Engineering
Reference No.:- M92745759

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