Using the affine cipher, encrypt the string “TABLE” using the keys a = 3 and b = 2. Given the definition below: E(x) = a.x + b (mod 26) D(y) = a-1 .(x-b)(mod 26)

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Q: Using the affine cipher, encrypt the string “TABLE” using the keys a = 3 and b = 2. Given the…

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Q: If the shared key is "SECURITY" and the result of DES round 15 is "IT? 7b/," what is the ciphertext?

A:

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Q: If the shared key is "SECURITY" and the result of DES round 15 is "IT? 7b/," what is the ciphertext

A: Introduction Shared Key and Public Encryption KeyTo secure messages delivered between strangers,…