import sys

from cryptography.hazmat.primitives import serialization, hashes
from cryptography.hazmat.primitives.asymmetric import rsa, padding

def encryptFile(public_key, text):
	ciphertext = public_key.encrypt(
		text,
		padding.OAEP(
			mgf=padding.MGF1(algorithm=hashes.SHA256()),
			algorithm=hashes.SHA256(),
			label=None
		)
	)
	return ciphertext

def load_public_key(file):
	with open(file, 'rb') as key_file:
		public_key = serialization.load_pem_public_key(
			key_file.read(),
		)

	return public_key