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Get Full Access to Discrete Mathematics And Its Applications - 7 Edition - Chapter 4.6 - Problem 2e
Get Full Access to Discrete Mathematics And Its Applications - 7 Edition - Chapter 4.6 - Problem 2e

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# Encrypt the message .STOP POLLUTION by translating the

ISBN: 9780073383095 37

## Solution for problem 2E Chapter 4.6

Discrete Mathematics and Its Applications | 7th Edition

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Problem 2E

Encrypt the message .STOP POLLUTION by translating the letters into numbers, applying the given encryption function, and then translating the numbers back into letters.a) f(p) = (p + 4) mod 26________________b) f(p) = (p + 21) mod 26________________c) f(p) = (17p + 22) mod 26

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Leslie Ogu CSCI 4531 09/06/2016 ­ ​Chapter 2: Encryption Symmetric Encryption + The universal technique for providing confidentiality for transmitted or stored data + Also referred to as conventional encryption or ​single­key encryption + Two requirements to use: + Need a strong encryption algorithm + Sender and receiver must have obtained copies of the secret key in a secure fashion and and must keep the key secure + Only alternative before public­key encryption in 1970’s + Still most widely used alternative + 5 Ingredients + Plaintext + Encryption algorithm + Secret key + Ciphertext

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