Use as many advanced python techniques as you can • Write classes to support the Decrypt and the Rotation algorithms.• Use Bitsets, Bytes, where bit manipulations are needed.• Use Regular Expressions to parse and search strings.• Write any supporting classes necessary to support the Decrypt and Rotation Algorithms.• For example, the Decrypt Algorithm needs support for reading an encrypted file.• The Decrypt class is only responsible for decrypting a character, NOT reading a file ANDdecrypting each character. Computing Rotation AlgorithmThis is a potential solution though not the ONLY solution. Use it in-caseyou don't have an idea where to start.A. See the Frequencies.txt in the zip file to determine the mostfrequent characterB. Do a rotation, and decrypt the fileC. Determine the most frequent decrypted character in the fileD. If the most frequent decrypted character is the same as the one inFrequencies.txt the rotation is correctE. If these characters are different, repeat from step B Decryption AlgorithmAlgorithm Decrypt(byte,amount)// Reverse the Encrypt processUsage:byte = 'S' <83 ascii>amount = 3Decrypt(byte,amount)During the decrypt process, the amount-to-rotate isn't known wherethe amount to rotate ranges from 1 to 7.

Below I am adding python code for above requirement below

Answered: Use as many advanced python techniques…

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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Use as many advanced python techniques as you can

• Write classes to support the Decrypt and the Rotation algorithms.
• Use Bitsets, Bytes, where bit manipulations are needed.
• Use Regular Expressions to parse and search strings.
• Write any supporting classes necessary to support the Decrypt and Rotation Algorithms.
• For example, the Decrypt Algorithm needs support for reading an encrypted file.
• The Decrypt class is only responsible for decrypting a character, NOT reading a file AND
decrypting each character.

Computing Rotation Algorithm
This is a potential solution though not the ONLY solution. Use it in-case
you don't have an idea where to start.
A. See the Frequencies.txt in the zip file to determine the most
frequent character
B. Do a rotation, and decrypt the file
C. Determine the most frequent decrypted character in the file
D. If the most frequent decrypted character is the same as the one in
Frequencies.txt the rotation is correct
E. If these characters are different, repeat from step B

Decryption Algorithm
Algorithm Decrypt(byte,amount)
// Reverse the Encrypt process
Usage:
byte = 'S' <83 ascii>
amount = 3
Decrypt(byte,amount)
During the decrypt process, the amount-to-rotate isn't known where
the amount to rotate ranges from 1 to 7.

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