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Commit 73552a6

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Merge pull request avinashkranjan#1480 from AvishkarArjan/branch_avishkar
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‎File-Encrypter/README.md

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File Encrypter

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This is a command-line interface (CLI) tool that provides secure file encryption and decryption functionalities. The tool allows users to encrypt sensitive files using a strong encryption algorithm, making the contents unreadable to unauthorized individuals. It also enables users to decrypt encrypted files, restoring them to their original state.

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Install Dependencies

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  • Step 1 : Clone the Repository
  • Step 2 : Change directory to File-Encrypter
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 cd Amazing-Python-Scripts/File-Encrypter
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  • Step 3: run the command
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 pip install -r requirements.txt
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Usage

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  • Create a file with the content you want to encrypt in the same directory as the script, the run -
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 python script.py <file_name> encrypt
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  • Congratulations ! The file is encrypted. You would notice that your original file is gone and replaced with a .encrypted file of the same name. To decrypt it run -
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 python script.py <file_name.encrypted> decrypt
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  • For more info, run this -
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 python script.py --help
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secret.key

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This is a crucial file generated automatically when you first encrypt your file. It contained the main Encryption Key. It needs to be present in the same folder too. If you're really planning to hide some important data, better move this file somewhere else. But dont lose it.

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‎File-Encrypter/requirements.txt

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‎File-Encrypter/script.py

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from cryptography.fernet import Fernet
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import os
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import sys
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import argparse
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def generate_key():
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return Fernet.generate_key()
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def save_key(key, file_path):
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# save encryption key to a file
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with open(file_path,'wb') as f:
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f.write(key)
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def load_key(file_path):
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with open(file_path,'rb') as f:
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return f.read()
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def encrypt_file(key,file_path):
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f=Fernet(key)
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with open(file_path,'rb') as f_input:
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data = f_input.read()
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encrypted_data = f.encrypt(data)
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with open(file_path.split(".")[0]+'.encrypted','wb') as f_output:
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f_output.write(encrypted_data)
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os.remove(file_path)
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def decrypt_file(key, file_path):
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f=Fernet(key)
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with open (file_path,'rb') as f_enc:
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data = f_enc.read()
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dec_data = f.decrypt(data)
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with open(file_path.split(".")[0]+".txt",'wb') as f_dec:
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f_dec.write(dec_data)
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os.remove(file_path)
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if __name__ == "__main__":
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parser = argparse.ArgumentParser(description = "[*]Encrypt youre files and password protect them")
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parser.add_argument('file_path', help="Add the name of the file to be encrypted")
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parser.add_argument('mode',choices=['encrypt','decrypt'],help="Choose either encrypt or decrypt")
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args = parser.parse_args()
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if args.mode == "encrypt":
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key = generate_key()
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save_key(key,"secret.key")
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encrypt_file(key,args.file_path)
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print("Encrypted")
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else:
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key = load_key("secret.key")
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decrypt_file(key, args.file_path )
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print("Decrypted")

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