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Break the following ciphertext, knowing that it has been obtained by encrypting a short English message using the affine cipher: TPOPE BFOKT TPYRG YRTPO UABZF
Break the following ciphertext, knowing that it has been obtained by encrypting a short English message using the affine cipher: TPOPE BFOKT TPYRG YRTPO UABZF TACRF OBKTE RFYKT POYRW AIOTE DOYRK TOYR Please note that the letters of the ciphertext have been arranged for convenience and increased readability in the groups of five characters. Please use the analytical method (i.e., for each possible hypothesis regarding the possible frequency of letters in a short English message, form and solve a set of two equations with two unknown). Use tables you have developed as a solution to the first problem to confirm or reject each hypothesis, and recover the correct key. Please note that an exhaustive key search attack, i.e., trying all possible keys, or solutions to the equations, one by one, using a computer, will not be accepted as a valid solution. Break the following ciphertext, knowing that it has been obtained by encrypting a short English message using the affine cipher: TPOPE BFOKT TPYRG YRTPO UABZF TACRF OBKTE RFYKT POYRW AIOTE DOYRK TOYR Please note that the letters of the ciphertext have been arranged for convenience and increased readability in the groups of five characters. Please use the analytical method (i.e., for each possible hypothesis regarding the possible frequency of letters in a short English message, form and solve a set of two equations with two unknown). Use tables you have developed as a solution to the first problem to confirm or reject each hypothesis, and recover the correct key. Please note that an exhaustive key search attack, i.e., trying all possible keys, or solutions to the equations, one by one, using a computer, will not be accepted as a valid solution
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