长安汽车申请防中继攻击离线控车方法专利，阻断中继攻击防止车辆被非法控制或窃取

Group 1 - Chongqing Changan Automobile Co., Ltd. has applied for a patent titled "Method, Device, Vehicle, Medium, and Program Product for Preventing Relay Attack Offline Control of Vehicles," with publication number CN121568118A and application date set for December 2025 [1] - The patent involves vehicle control technology, enabling communication and control processes between control devices and vehicles in offline or weak network conditions through Bluetooth connections [1] - The vehicle sends distance measurement signals to the control device and receives feedback to calculate distance information, which helps to prevent illegal remote requests by verifying the distance before accepting encrypted authentication requests [1] Group 2 - Chongqing Changan Automobile Co., Ltd. was established in 1996 and is primarily engaged in the automotive manufacturing industry, with a registered capital of 991,408.606 million RMB [2] - The company has invested in 120 enterprises and participated in 5,000 bidding projects, holding 3,078 trademark records and 5,000 patent records, along with 1,072 administrative licenses [2]