In Python cryptography, how do I build a CLI?

In Python cryptography, building a Command Line Interface (CLI) involves using libraries such as `argparse` for argument parsing and a cryptography library like `cryptography` to handle encryption and decryption tasks. Below is a simple example of how you can implement a CLI for encrypting and decrypting text using the symmetric algorithm Fernet.


        from cryptography.fernet import Fernet
        import argparse

        # Generate a key for encryption
        key = Fernet.generate_key()
        cipher_suite = Fernet(key)

        def encrypt(text):
            """Encrypts the provided text."""
            return cipher_suite.encrypt(text.encode())

        def decrypt(encrypted_text):
            """Decrypts the provided encrypted text."""
            return cipher_suite.decrypt(encrypted_text).decode()

        def main():
            parser = argparse.ArgumentParser(description='Encrypt or Decrypt text')
            parser.add_argument('action', choices=['encrypt', 'decrypt'], help='Choose to encrypt or decrypt text.')
            parser.add_argument('text', help='The text to encrypt or decrypt.')

            args = parser.parse_args()

            if args.action == 'encrypt':
                encrypted = encrypt(args.text)
                print(f'Encrypted: {encrypted.decode()}')
            elif args.action == 'decrypt':
                decrypted = decrypt(args.text.encode())
                print(f'Decrypted: {decrypted}')

        if __name__ == '__main__':
            main()

Python Cryptography CLI Encryption Decryption Command Line Interface

In Python cryptography, how do I build a CLI?

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In Python cryptography, how do I build a CLI?

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