python import smtplib from email.message import EmailMessage from cryptography.hazmat.primitives.asymmetric import ec from cryptography.hazmat.primitives import serialization from cryptography.hazmat.primitives.ciphers.aead import AESGCM # Load the ECC public key from the .asc file with open(‘recipient_public_key.asc’, ‘rb’) as key_file: public_key_bytes = key_file.read() public_key = ec.EllipticCurvePublicKey.from_public_bytes( ec.SECP384R1(), public_key_bytes ) # Create the email message msg = EmailMessage() msg.set_content(‘This is the encrypted email.’) msg[‘Subject’] = ‘Encrypted Email’ msg[‘From’] = ‘you@example.com’ msg[‘To’] = ‘recipient@example.com’ # Encrypt the email message using the ECC public key nonce = bytes.fromhex(‘000102030405060708090a0b0c0d0e0f’) cipher = AESGCM(public_key.public_key().secret_key_bytes) ciphertext = cipher.encrypt(nonce, msg.as_bytes(), None) # Send the encrypted email server = smtplib.SMTP(‘smtp.example.com’) server.send_message(msg, from_addr=‘you@example.com’, to_addr=‘recipient@example.com’) server.quit() # Save the encrypted email to a file with open(‘encrypted_email.bin’, ‘wb’) as f: f.write(ciphertext)