Question: m no S B. Computation & Encryption (1) Caesar Cipher is early known substitution cipher Mathematically give each letter a number a b c d

m no S B. Computation & Encryption (1) Caesar Cipher is

m no S B. Computation & Encryption (1) Caesar Cipher is early known substitution cipher Mathematically give each letter a number a b c d e f g h i j k 1 pqr t 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 then we have Caesar cipher as: c=E(p) = (p + k) mod (26) and p=D(c) = (c k) mod (26) u V W x z (a) With k=17, please decrypt the following ciphertext fepbgztj (b) With k=23, encryption rattler

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