Suppose Data Encryption Standard (DES) is used to encrypt the following 64-bit block of plaintext: 6 3 F A C 0 D 0      3 4 D 9 F 7 9 3 Given the initial 64-bit key is: 1 C 5 8 7 F 1 C       1 3 9 2 4 F E F

Q: Encrypt : QuiZ Cresar cypher is OVER using the with $ (p) = p+18 (mod 2b Let AこO, B=, Z=25

A: Given plain text is QUIZ IS OVER Also given f(p) = p+18(mod 26) So, key is 18

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A: The answer is

Q: A1D6D039776742 2514B829BF486A

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