implementing-mtls-for-zero-trust-services

name	implementing-mtls-for-zero-trust-services
description	使用 Python cryptography 库进行证书生成，使用 ssl 模块进行 TLS 验证， 配置微服务之间的双向 TLS（mTLS）身份验证。验证证书链、检查过期情况， 并审计 mTLS 部署状态。适用于实现零信任服务间身份验证的场景。
domain	cybersecurity
subdomain	security-operations
tags	["implementing","mtls","for","zero"]
version	1.0
author	mahipal
license	Apache-2.0

为零信任服务实现 mTLS

说明

生成 CA 证书、颁发服务证书，并配置用于服务间身份验证的双向 TLS 验证。

from cryptography import x509
from cryptography.x509.oid import NameOID
from cryptography.hazmat.primitives import hashes, serialization
from cryptography.hazmat.primitives.asymmetric import rsa
import datetime

# 生成 CA 密钥和证书
ca_key = rsa.generate_private_key(public_exponent=65537, key_size=4096)
ca_cert = (x509.CertificateBuilder()
    .subject_name(x509.Name([x509.NameAttribute(NameOID.COMMON_NAME, "Internal CA")]))
    .issuer_name(x509.Name([x509.NameAttribute(NameOID.COMMON_NAME, "Internal CA")]))
    .public_key(ca_key.public_key())
    .serial_number(x509.random_serial_number())
    .not_valid_before(datetime.datetime.utcnow())
    .not_valid_after(datetime.datetime.utcnow() + datetime.timedelta(days=3650))
    .add_extension(x509.BasicConstraints(ca=True, path_length=None), critical=True)
    .sign(ca_key, hashes.SHA256()))

示例

import ssl
context = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
context.load_cert_chain("client.pem", "client-key.pem")
context.load_verify_locations("ca.pem")
context.verify_mode = ssl.CERT_REQUIRED