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4. Decipher the following ciphertext, which was enciphered with the Caesar cipher: TEBKFKQEBZLROPBLCERJXKBSBKQP, using the statistical cryptoanalysis and the 1-gram model of English (see the table below). Write a program to calculate the correlation (i) for 0 ≤ i ≤ 25 to help identify the key and the plaintext. a b с d e f 61) 0.080 0.015 0.030 0.040 0.130 0.020 0.015 h i k 0.060 j 0.005 1 0.065 0.005 0.035 m 0.030 n 0 9 Р 0.020 r 0.070 S 0.080 0.002 0.065 0.060 t u V X y N 0.090 0.030 0.010 0.015 0.005 0.020 0.002

4. Decipher the following ciphertext, which was enciphered with the Caesar cipher: TEBKFKQEBZLROPBLCERJXKBSBKQP, using the statistical cryptoanalysis and the 1-gram model of English (see the table below). Write a program to calculate the correlation (i) for 0 ≤ i ≤ 25 to help identify the key and the plaintext. a b с d e f 61) 0.080 0.015 0.030 0.040 0.130 0.020 0.015 h i k 0.060 j 0.005 1 0.065 0.005 0.035 m 0.030 n 0 9 Р 0.020 r 0.070 S 0.080 0.002 0.065 0.060 t u V X y N 0.090 0.030 0.010 0.015 0.005 0.020 0.002

Database System Concepts
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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4. Decipher the following ciphertext, which was enciphered with the Caesar cipher: TEBKFKQEBZLROPBLCERJXKBSBKQP, using the statistical cryptoanalysis and the 1-gram model of English (see the table below). Write a program to calculate the correlation (i) for 0 ≤ i ≤ 25 to help identify the key and the plaintext. a b с d e f 61) 0.080 0.015 0.030 0.040 0.130 0.020 0.015 h i k 0.060 j 0.005 1 0.065 0.005 0.035 m 0.030 n 0 9 Р 0.020 r 0.070 S 0.080 0.002 0.065 0.060 t u V X y N 0.090 0.030 0.010 0.015 0.005 0.020 0.002
Transcribed Image Text:4. Decipher the following ciphertext, which was enciphered with the Caesar cipher: TEBKFKQEBZLROPBLCERJXKBSBKQP, using the statistical cryptoanalysis and the 1-gram model of English (see the table below). Write a program to calculate the correlation (i) for 0 ≤ i ≤ 25 to help identify the key and the plaintext. a b с d e f 61) 0.080 0.015 0.030 0.040 0.130 0.020 0.015 h i k 0.060 j 0.005 1 0.065 0.005 0.035 m 0.030 n 0 9 Р 0.020 r 0.070 S 0.080 0.002 0.065 0.060 t u V X y N 0.090 0.030 0.010 0.015 0.005 0.020 0.002
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