python将pkcs8的私钥转换为pkcs1

场景是与支付宝对接，手里只有java sdk使用的pkcs8的私钥，但需要使用python sdk开发一些工具，私钥不兼容，所以需要进行转换。

from cryptography.hazmat.primitives import serialization
from cryptography.hazmat.primitives.asymmetric import rsaprivate_key_base64 = '[pkcs8私钥]'private_key_bytes = base64.b64decode(private_key_base64)private_key_pem = f"-----BEGIN PRIVATE KEY-----\n{base64.b64encode(private_key_bytes).decode('utf-8')}\n-----END PRIVATE KEY-----"private_key = serialization.load_pem_private_key(private_key_pem.encode('utf-8'),password=None)private_key_pkcs1_pem = private_key.private_bytes(encoding=serialization.Encoding.PEM,format=serialization.PrivateFormat.TraditionalOpenSSL,encryption_algorithm=serialization.NoEncryption())print(private_key_pkcs1_pem.decode('utf-8'))