3. File Encryption and Decryption Write a program that uses a dictionary to assign "codes" to each letter of the alphabet. For example: 'a' : '9', 'B' : '@', 'b': '#', etc...} Using this example, the letter A would be assigned the symbol %, the letter a would be assigned the number 9, the letter B would be assigned the symbol e, and so forth. codes = { 'A' : The program should open a specified text file, read its contents, then use the dictionary to write an encrypted version of the file's contents to a second file. Each character in the second file should contain the code for the corresponding character in the first file. Write a second program that opens an encrypted file and displays its decrypted on the screen. contents

3. File Encryption and Decryption Write a program that uses a dictionary to assign "codes" to each letter of the alphabet. For example: 'a' : '9', 'B' : '@', 'b': '#', etc...} Using this example, the letter A would be assigned the symbol %, the letter a would be assigned the number 9, the letter B would be assigned the symbol e, and so forth. codes = { 'A' : The program should open a specified text file, read its contents, then use the dictionary to write an encrypted version of the file's contents to a second file. Each character in the second file should contain the code for the corresponding character in the first file. Write a second program that opens an encrypted file and displays its decrypted on the screen. contents

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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