PYTHON3Complete the given function, encrypt_text that encrypts the variable text using the provided key by applying a modified version of Caesar’s Cipher with the following rules:The key will contain a word made up of the letters ‘u’ and ‘d’. The cipher will use the key to determine the direction of the shift, with a ‘u’ indicating that the character must be shifted upwards while a ‘d’ indicating a downward shift. The number of characters in the key will determine the number of positions to shift.The given text variable will only contain characters from the ASCII table with values between 32 and 126.If the key is invalid (empty string, contains characters other than u and d) or the text is invalid (empty string), no encryption occurs and the function returns the original text.If the text has more characters than the key, the key will loop through again to accommodate the additional text characters.An iterative approach should be used to solve this problem. Brute force solutions will not be accepted. Input FormatThe user will enter two strings one after the other, the first will be the text to encrypt, and the second will bethe key used to encrypt it.Example:Hello WorlduddConstraints0<=len(text)<=1000 0<=len(key)<=1000 len(key) can be greater than len(text)Output FormatThe program should print out the encrypted text.Example:Kbiol|ZlooaSample Input 0Hello WorlduddSample Output 0Kbiol|ZlooaSample Input 1abracadabrauuSample Output 1cdtcecfcdtc

Solution: Given, The key will contain a word made up of the letters ‘u’ and ‘d’. The cipher…

Answered: PYTHON3 Complete the given function,…

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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PYTHON3

Complete the given function, encrypt_text that encrypts the variable text using the provided key by applying a modified version of Caesar’s Cipher with the following rules:

The key will contain a word made up of the letters ‘u’ and ‘d’. The cipher will use the key to determine the direction of the shift, with a ‘u’ indicating that the character must be shifted upwards while a ‘d’ indicating a downward shift. The number of characters in the key will determine the number of positions to shift.
The given text variable will only contain characters from the ASCII table with values between 32 and 126.
If the key is invalid (empty string, contains characters other than u and d) or the text is invalid (empty string), no encryption occurs and the function returns the original text.
If the text has more characters than the key, the key will loop through again to accommodate the additional text characters.
An iterative approach should be used to solve this problem. Brute force solutions will not be accepted.