如何使用Python创建自签名SSL证书

from OpenSSL import crypto

# 创建私钥
key = crypto.PKey()
key.generate_key(crypto.TYPE_RSA, 2048)

# 创建证书请求
req = crypto.X509Req()
subject = req.get_subject()
subject.C = "CN"
subject.ST = "Shanghai"
subject.L = "Shanghai"
subject.O = "Pidancode"
subject.OU = "Tech"
subject.CN = "pidancode.com"
req.set_pubkey(key)
req.sign(key, "sha256")

# 创建证书
cert = crypto.X509()
cert.set_version(3)
cert.set_serial_number(1000)
cert.gmtime_adj_notBefore(0)
cert.gmtime_adj_notAfter(10 * 365 * 24 * 60 * 60)
cert.set_subject(req.get_subject())
cert.set_issuer(cert.get_subject())
cert.set_pubkey(req.get_pubkey())
cert.sign(key, "sha256")

# 保存证书和私钥到文件
with open("server.crt", "wb") as cert_file:
    cert_file.write(crypto.dump_certificate(crypto.FILETYPE_PEM, cert))

with open("server.key", "wb") as key_file:
    key_file.write(crypto.dump_privatekey(crypto.FILETYPE_PEM, key))