Computers and Technology, 06.03.2020 00:35 Cocco
As you know, des is insecure because of its short key length (56 bits). an improvement, proposed by rivest, is desx. desx has key length 120 bits, seen as a pair k = (k1, k2), where k1 is 56 bits and k2 is 64 bits. the encryption of a one-block message m is desx(k, m) = k2 ⊕ des(k1, (m ⊕ k2))
a. explain how decryption is done.
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As you know, des is insecure because of its short key length (56 bits). an improvement, proposed by...
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