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do the following in python idle 3.5 or higher know nothing on this subject Eile Edit Yew Hbtory Bookmarks bols Help Microsoft Word-Situatio x S

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do the following in python idle 3.5 or higher know nothing on this subject

Eile Edit Yew Hbtory Bookmarks bols Help Microsoft Word-Situatio x S Female coaches: Why are. x a SakaieURI:csc 110 spri.. x O lab7-crypto-s17-labr-cry. x Writer The owing Code. x https sakai. 7-Cryptog rithms -10 28 /lab7-cryp 67k e a Search A Most visited e Getting started To decode an Affine cipher, we need to reverse the process. This is not a simple as reversing a Caesar cipher because it involves multiplication and addition. We need to find a way to reverse the operations in the encryption algorithm. Since we are doing modular multiplication, we need to find the modular inverse of the multiplier a. n other words, we need to find a number x such that: ex mod 26 1 once you have determinedx,the modular inverse of a, the decryption formula is pax (c-b mod m where c is the numerical value ofthe ciphertext letter and pis the numerical value of the plaintext. The algorithm to decrypt a ciphertext message given the keys a and b is Find the modular inverse ofa mod m. For each letter in the ciphertext o Convert the letter to the corresponding number c(see table above). o Compute the plaintext number using the formula p x (c-b mod m o Find the plaintext letter in the alphabet that corresponds to the number p o Append the plaintext letter to the plaintext you are generating a Practice decrypting a message that was encrypted with the Affine cipher Given the following ciphertext messages that wereencrypted using the Affine cipher with a 11 and b 6. (m is 26 since we have an alphabet of 26 letters First find the modular inverse of a 11 mod 26. Remember, this means you want a number X such that a mod 26-1

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