将P12证书转为pem证书

GPT太好用了，上代码

from cryptography.hazmat.primitives.serialization.pkcs12 import load_key_and_certificates
from cryptography.hazmat.primitives import serialization
from cryptography.hazmat.backends import default_backend

def convert_p12_to_pem(p12_file, password, pem_file):
    with open(p12_file, 'rb') as f:
        p12_data = f.read()

    # Load the PKCS12 data
    private_key, certificate, additional_certs = load_key_and_certificates(
        p12_data, password.encode(), default_backend()
    )

    # Extract the private key
    if private_key:
        private_key_pem = private_key.private_bytes(
            encoding=serialization.Encoding.PEM,
            format=serialization.PrivateFormat.TraditionalOpenSSL,
            encryption_algorithm=serialization.NoEncryption()
        )
    else:
        private_key_pem = b''

    # Extract the certificate
    if certificate:
        certificate_pem = certificate.public_bytes(
            encoding=serialization.Encoding.PEM
        )
    else:
        certificate_pem = b''

    # Write to PEM file
    with open(pem_file, 'wb') as f:
        f.write(private_key_pem)
        f.write(certificate_pem)

# 使用示例
p12_file = 'XXX1.p12'
password = 'XXXX'
pem_file = 'XXX1.pem'

convert_p12_to_pem(p12_file, password, pem_file)