How does the use of keys affect the encryption and decryption process?
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Q: If the encryption rule is E(M)= M + 23, what is 'Y' encrypted as? 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14…
A: Y = 24Y+23 = 24+23 = 47since 47 is more than 25, 47 is wrapped around form the front47-26 = 21…
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How does the use of keys affect the encryption and decryption process?
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