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Commit 3bb02ed

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Merge pull request avinashkranjan#1748 from Abhinavcode13/patch-5
Added the File Encryption/Decryption script
2 parents 9cd87ed + ec25b7d commit 3bb02ed

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# File Downloader Script
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This script is about file encryption and decryption using the Fernet symmetric encryption algorithm from the cryptography library in Python.
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The script provides functions to generate an encryption key, load the key from a file, encrypt a specified file, and decrypt a previously encrypted file.
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<br>
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## Instructions 📝
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### Step 1:
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Make sure you have Python installed on your system. You can download and install Python from the official Python website (https://www.python.org).
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### Step 2:
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Open a text editor and copy the script provided in the previous response into a new file.
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### Step 3:
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Save the file with a .py extension, such as file_encryption.py
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### Step 4:
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Open a terminal or command prompt and navigate to the directory where you saved the Python script.
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### Step 5:
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Check the Output: The script will attempt to download the file from the specified URL and save it to the destination path. You will see either a success message or a failure message displayed in the command prompt or terminal, depending on the outcome of the download operation.
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### Step 6:
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If you haven't generated a key before, uncomment the generate_key() line in the script by removing the # character at the beginning of the line. This line should only be executed once to generate the key. After generating the key, you can comment out the generate_key() line again by adding the # character.
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### step 7:
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Run the script again (python file_encryption.py) to encrypt the file specified in the file_to_encrypt variable. It will print a success message when the encryption is complete.
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### step 8:
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To decrypt the file, run the script once more (python file_encryption.py). It will use the same key to decrypt the file, and print a success message when the decryption is complete.
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from cryptography.fernet import Fernet
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def generate_key():
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key = Fernet.generate_key()
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with open("key.key", "wb") as key_file:
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key_file.write(key)
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def load_key():
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with open("key.key", "rb") as key_file:
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key = key_file.read()
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return key
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def encrypt_file(file_path, key):
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cipher = Fernet(key)
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with open(file_path, "rb") as file:
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file_data = file.read()
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encrypted_data = cipher.encrypt(file_data)
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with open(file_path, "wb") as file:
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file.write(encrypted_data)
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def decrypt_file(file_path, key):
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cipher = Fernet(key)
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with open(file_path, "rb") as file:
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encrypted_data = file.read()
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decrypted_data = cipher.decrypt(encrypted_data)
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with open(file_path, "wb") as file:
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file.write(decrypted_data)
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# Generate a new key (run this only once)
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# generate_key()
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# Load the key
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key = load_key()
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# Encrypt a file
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file_to_encrypt = "example.txt"
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encrypt_file(file_to_encrypt, key)
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print("File encrypted successfully!")
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# Decrypt the file
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file_to_decrypt = "example.txt"
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decrypt_file(file_to_decrypt, key)
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print("File decrypted successfully!")

‎SCRIPTS.md

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|94\. | Linked List | Linked List data Scripts are used to store and manage a collection of elements in a dynamic and flexible manner | [Take Me](./Linked%20List/) | [Himanshu Agarwal](https://github.com/himanshu-03)
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| 95\. | Searching Techniques | Searching techniques are scripts used to find a specific element or value within a collection of data. | [Take Me](./Searching%20Techniques/) | [Himanshu Agarwal](https://github.com/himanshu-03)
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| 96\. | Sorting Techniques | Sorting techniques are scripts that arrange a collection of data elements in a particular order, typically ascending or descending. | [Take Me](./Sorting%20Techniques/) | [Himanshu Agarwal](https://github.com/himanshu-03)
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| 99\. | File Organizer script | A File Organizer script is a program or script that automates the process of organizing files within a directory or multiple directories | [Take Me](./File Organizer script/) | [Abhinav kumar](https://github.com/Abhinavcode13)
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| 100\. | File Encryption/Decryption script | A File Organizer script is a program or script that automates the process of organizing files within a directory or multiple directories | [Take Me](./File Encryption/Decryption script/) | [Abhinav kumar](https://github.com/Abhinavcode13)
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