Answer ALL questions.The ciphertext message below was encrypted using affine transformation C = P +k(mod 26),0 ≤ C ≤ 25.YFXMP CESPZC JTDBF PPYZQX LESPX LETNDa) By completing the following table, find the most frequently occurring letter in theciphertext.LetterNumber ofOccurrenceQuestion (b) is based on the information in tables below and answer in Question (a).A B C123Numerical 0equivalentFrequency 7(in %)LetterNumenicalequivalentFrequency 8(in %)N13ABCD E FGHIJKLMNOPQRSTUVWXYZ10147P153D4Q16<1E1313R178F53S186G2T199H L3U2038V211JK9<1W2210<1LM<1114XY23 242123Z25<1The tables show that the most frequently occurring letters in English text are E, T, N, R, I, Oand A, with E occurring substantially more than the other letters.b) Determine what is the letter that represents C and P in affine transformation C = P +k(mod 26),0 ≤ C≤ 25. Then, show that the value of k = 11(mod 26).c) What is the plaintext message?

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The ciphertext message below was encrypted using affine transformation C = P + k(mod 26),0 ≤ CS 25. YFXMP CESPZC JTDBF PPYZQX LESPX LETND a) By completing the following table, find the most frequently occurring letter in the ciphertext. Letter Number of Occurrence Numerical Frequency (5) Question (b) is based on the information in tables below and answer in Question (a). Letter Numenical Frequency (in %) A 7 AB N 13 8 1 O 14 7 3 P 15 3 4 Q 16 <1 13 R 17 8 3 2 18 19 6 9 8 U V 20 21 3 W 22 1 VWXYZ M 10 11 12 41 4 3 X 23 Y Z 24 2 41 The tables show that the most frequently occurring letters in English text are E, T, N, R, I, O and A, with E occurring substantially more than the other letters. b) Determine what is the letter that represents C and P in affine transformation C = P+ k(mod 26),0 ≤ C≤ 25. Then, show that the value of k = 11(mod 26). c) What is the plaintext message?

The ciphertext message below was encrypted using affine transformation C = P + k(mod 26),0 ≤ CS 25. YFXMP CESPZC JTDBF PPYZQX LESPX LETND a) By completing the following table, find the most frequently occurring letter in the ciphertext. Letter Number of Occurrence Numerical Frequency (5) Question (b) is based on the information in tables below and answer in Question (a). Letter Numenical Frequency (in %) A 7 AB N 13 8 1 O 14 7 3 P 15 3 4 Q 16 <1 13 R 17 8 3 2 18 19 6 9 8 U V 20 21 3 W 22 1 VWXYZ M 10 11 12 41 4 3 X 23 Y Z 24 2 41 The tables show that the most frequently occurring letters in English text are E, T, N, R, I, O and A, with E occurring substantially more than the other letters. b) Determine what is the letter that represents C and P in affine transformation C = P+ k(mod 26),0 ≤ C≤ 25. Then, show that the value of k = 11(mod 26). c) What is the plaintext message?

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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