服务端参考实现
概述
本文档提供ATH协议服务端的参考实现指南,开发者可以基于此实现完整的服务端功能。核心模块
1. 身份管理模块
负责管理服务端DID身份和公私钥对:class IdentityManager:
def __init__(self):
self.did = None
self.private_key = None
self.public_key = None
def load_identity(self, file_path):
# 从文件加载身份信息
pass
def sign(self, data):
# 使用私钥对数据签名
pass
def verify_signature(self, public_key, data, signature):
# 验证客户端签名
pass
2. 授权确认模块
负责向用户确认授权请求:class AuthorizationConfirmation:
def __init__(self):
self.notification_channels = ["sms", "email", "app_push"]
def send_confirmation_request(self, user_id, client_info, scopes):
# 向用户发送授权确认请求
pass
def verify_confirmation_response(self, response):
# 验证用户确认响应的签名
pass
def get_authorization_result(self, request_id):
# 查询用户授权结果
pass
3. 权限管理模块
负责权限审批和访问控制:class PermissionManager:
def __init__(self):
self.permission_policies = {}
def validate_scopes(self, requested_scopes, user_authorization):
# 验证请求的权限是否在用户授权范围内
pass
def apply_policies(self, scopes, client_info):
# 应用安全策略,调整权限范围
pass
def generate_access_token(self, client_did, user_id, scopes, ttl):
# 生成签名的访问令牌
pass
4. 握手服务模块
负责实现完整的握手流程:class HandshakeService:
def __init__(self, identity_manager, auth_confirmation, permission_manager):
self.identity_manager = identity_manager
self.auth_confirmation = auth_confirmation
self.permission_manager = permission_manager
self.sessions = {}
def handle_handshake_request(self, request):
# 处理客户端握手请求
pass
def handle_identity_proof(self, request):
# 处理客户端身份证明
pass
def handle_scope_request(self, request):
# 处理权限请求
pass
def handle_key_negotiation(self, request):
# 处理密钥协商
pass
def validate_access_token(self, token):
# 验证访问令牌有效性
pass
握手流程实现示例
# 初始化服务端
identity_manager = IdentityManager()
identity_manager.load_identity("server_identity.json")
auth_confirmation = AuthorizationConfirmation()
permission_manager = PermissionManager()
handshake_service = HandshakeService(
identity_manager,
auth_confirmation,
permission_manager
)
# 处理握手请求
@app.route('/ath/handshake', methods=['POST'])
def handshake_endpoint():
request_data = request.get_json()
response = handshake_service.handle_handshake_request(request_data)
return jsonify(response)
# 处理业务请求
@app.route('/api/<path:path>', methods=['GET', 'POST'])
def api_endpoint(path):
token = request.headers.get('Authorization')
if not handshake_service.validate_access_token(token):
return jsonify({"error": "Invalid token"}), 401
# 处理业务请求
pass
安全最佳实践
- 服务端私钥必须离线存储,不得暴露在公网环境
- 用户授权确认必须使用多因素认证(MFA)
- 所有握手请求必须进行速率限制,防止暴力攻击
- 定期审计授权日志,发现异常行为及时处理