Assignment 2 Problem Submission Rules: 1) Detection of plagiarism will result in Failing grade. Students must do this assignment by themselves. 2) After completion, your work must be submitted to an...

The aim of this assignment is to implement a Feistel cipher round function which consists of the following steps:

Assignment 2 Problem Submission Rules: 1) Detection of plagiarism will result in Failing grade. Students must do this assignment by themselves. 2) After completion, your work must be submitted to an assignment folder in D2L by a corresponding deadline. 3) Late assignments will be accepted up to 24 hours after the due date for 50% credit. Assignments submitted more than 24 hours late will not be accepted for credit. 4) It is much better to submit a partial/failed-attempt solution than none. Include the circumstances of the incompletion in your report. Problems: The aim of this assignment is to implement a Feistel cipher round function which consists of the following steps: 1. Implementing a Feistel Cipher – 70 points Step 1: The function takes as input 8 bits and the 4-bit key ??. Step 2: The binary is divided into two halves (??0 and ??0). Step 3: The function computes ??1 = ??0 and ??1 = ??0 ⊕??(??0,??), where ??(??0,??) = 2 × ??0?? ?????? 24 Step 4: The function performs a swapping of ??1 and ??1, then outputs ??1||??1. 2. Combining with Assignment 1 – 20 points Improve your implementation for 1 by using your Text Converter, so it can handle a string from a user and output a string. 3. Make some test codes to show the correctness of your implementation – 10 points Note: It is recommended to exchange a ciphertext generated by the implementation with your friend and check the decryption algorithm successfully recovers the original plaintext (you can use the discussion section in D2L). Complier requirement: The text converter must be implemented using Python version 3.9.x or higher. Students must use Python official libraries that are accessible from the webpage (https://docs.python.org/3/library/index.html). All used libraries and their purpose should be described in the report. Submission instructions: Please submit your deliverables to the D2L Assignments folder: (a) “2. Feistel Cipher”: create a txt file, copy and paste your entire Python code, save, and then submit with a written report explaining your implementation. The report should have some test inputs and screenshots of execution results, which verify the correctness of your implementation. Once you submit, D2L will perform a similarity check for your submission and show you the result. Your similarity score must be lower than 50% unless valid reasons for a high score described in the report. Otherwise, (the score -50%) will be deducted. https://docs.python.org/3/library/index.html