To decode a message encrypted using DES requires finding the key from among the 256 possible 56-bit binary keys. Although you might find the key early on, the worst case is that you have to test all 256 possible DES keys. a. How long would this take using the gaming PC described in the Special Interest Box “The Tortoise and the Hare” in Chapter 3? Assume that a single key can be tested in one floating-point operation. b. How long would this take using the Chinese Sunway TaihuLight supercomputer described in the Special Interest Box “The Tortoise and the Hare” in Chapter 3? Assume that a single key can be tested in one floating-point operation.

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

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