Analyzing Caesar Cipher

Let p₀, p₁, . . . , p₂₅ denote the frequencies of the English alphabets A, B, ..., Z, respectively (the probabilities of occurrence). The following table shows each p_i value:

\Write a java program that automates a brute-force key search attack using the above Mutual Index of Coincidence to find the right key for a ciphertext encrypted by a Caesar cipher. The program should be a command-line program that can take in a ciphertext txt file as an input and display MIC values for each key, the right key, and the decrypted plaintext.

character A B D E probability of occurrence Po = .082 P1 = .015 P2 = .028 P3 = .043 P4 = .127 P5 = .022 P6 = .020 P = .061 P8 = .070 po = .002 P10 = .008 P11 = .040 P12 = .024 N O Q R S T G UWLUI-YE P13 = .067 P14 = .075 P15 = .019 P16 = .001 P17 = .060 P18 = .063 P19 = .091 P20 = .028 P2i = .010 P22 = .023 P23 = .001 P24 = .020 P25 = .001 K L M Y Z character A B D E probability of occurrence Po = .082 P1 = .015 P2 = .028 P3 = .043 P4 = .127 P5 = .022 P6 = .020 P = .061 P8 = .070 po = .002 P10 = .008 P11 = .040 P12 = .024 N O Q R S T G UWLUI-YE P13 = .067 P14 = .075 P15 = .019 P16 = .001 P17 = .060 P18 = .063 P19 = .091 P20 = .028 P2i = .010 P22 = .023 P23 = .001 P24 = .020 P25 = .001 K L M Y Z