如何将Python加密CRL对象序列化为PEM

import OpenSSL.crypto as crypto
import base64

with open('path/to/crl_file.crl', 'rb') as file:
    crl_data = file.read()

crl = crypto.load_crl(crypto.FILETYPE_ASN1, crl_data)

pem_crl = crypto.dump_crl(crypto.FILETYPE_PEM, crl).decode('utf-8')

password = "your_password"
encrypted_pem_crl = crypto.encrypt(pem_crl.encode('utf-8'), password, "aes_256_cbc")
base64_encrypted_pem_crl = base64.b64encode(encrypted_pem_crl).decode('utf-8')