The program should support the following features:

• Accept command-line arguments for the file path, encryption algorithm, and secret key.

• Encrypt the file using the specified encryption algorithm and secret key.

• Save the encrypted file with the original file name and a ".enc" extension.

main_file.txt

+import argparse
+from cryptography.hazmat.primitives import hashes
+from cryptography.hazmat.primitives.kdf.pbkdf2 import PBKDF2HMAC
+from cryptography.hazmat.backends import default_backend
+from cryptography.hazmat.primitives import serialization
+from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes
+import os
+
+def encrypt_file(file_path, algorithm, key):
+    with open(file_path, 'rb') as file:
+        plaintext = file.read()
+
+    backend = default_backend()
+    salt = os.urandom(16)
+    kdf = PBKDF2HMAC(
+        algorithm=hashes.SHA256(),
+        length=32,
+        salt=salt,
+        iterations=100000,
+        backend=backend
+    )
+    derived_key = kdf.derive(key.encode())
+
+    iv = os.urandom(16)
+    cipher = Cipher(algorithm=algorithms._dict_[algorithm](derived_key), mode=modes.CFB(iv), backend=backend)
+    encryptor = cipher.encryptor()
+    ciphertext = encryptor.update(plaintext) + encryptor.finalize()
+
+    with open(file_path + '.enc', 'wb') as file:
+        file.write(salt + iv + ciphertext)
+
+def main():
+    parser = argparse.ArgumentParser(description='Encrypt a file using specified encryption algorithm and secret key')
+    parser.add_argument('--file', required=True, help='Path to the file to be encrypted')
+    parser.add_argument('--algorithm', required=True, choices=['AES', 'DES', '3DES'], help='Encryption algorithm')
+    parser.add_argument('--key', required=True, help='Secret key for encryption')
+
+    args = parser.parse_args()
+
+    encrypt_file(args.file, args.algorithm, args.key)
+
+if _name_ == '_main_':
+    main()
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