智能車鑰匙系統(tǒng)及其安全防護研究與設計
發(fā)布時間：2019-03-29 07:42
【摘要】：隨著社會經濟水平的提高和科學技術的發(fā)展,人們對現(xiàn)代便利生活有了更高的要求。汽車作為現(xiàn)代生活出行的基本工具越來越成為人們日常生活的重要組成部分,進而對汽車的舒適性、安全性有了更高的要求。智能車鑰匙系統(tǒng)提高了汽車的自動程度,極大便利了用戶。然而傳統(tǒng)的智能車鑰匙系統(tǒng)采用準雙向通信模式,易被攻擊者截獲低頻報文,進而誘導高頻加密信號,因此存在安全隱患。即使采用全雙向通信模式消除了這個隱患,也不能有效防范中繼攻擊。距離邊界協(xié)議理論上可以防止中繼攻擊,但距離邊界協(xié)議理論需要很高的時間精度,缺乏廣泛適用的實現(xiàn)方案。作為物聯(lián)網的延伸,車聯(lián)網實現(xiàn)了人、車、路和環(huán)境的協(xié)同交互,將使用戶擁有更加安全、舒適的駕駛環(huán)境,未來智能車鑰匙系統(tǒng)也將成為車聯(lián)網的一個重要組成部分。然而,傳統(tǒng)智能車鑰匙系統(tǒng)不能與車身控制模塊有效結合,進而無法拓展實現(xiàn)車內的更多功能,也無法接入網絡與外界通信,因此其不符合車聯(lián)網的發(fā)展趨勢。本文改進了智能車鑰匙系統(tǒng),并提出了一種安全防護方案,通過無線網絡實現(xiàn)遠程控制汽車,并在車內將智能車鑰匙系統(tǒng)與CAN總線整合。設計并實現(xiàn)了汽車與服務器間通信、汽車與鑰匙間通信的安全協(xié)議。通過引入無線網絡,當用戶遠離汽車時,可通過網絡關閉汽車本地智能車鑰匙子系統(tǒng),隔絕了針對智能車鑰匙系統(tǒng)的中繼攻擊等攻擊方式;同時,還可以遠程監(jiān)控汽車狀態(tài)信息,若遭到攻擊,可向遠程報警,以便用戶采取對應措施。通過引入CAN總線,將智能車鑰匙系統(tǒng)整合入車身控制系統(tǒng),使系統(tǒng)具有了實時性好、可靠性高及方便拓展的優(yōu)點,且便于準確快速地進行故障診斷和更新固件程序。搭建了系統(tǒng)軟硬件平臺,包括硬件平臺、天線設計與制作,軟件、協(xié)議設計與開發(fā)等。最后測試了系統(tǒng)的安全策略和各項功能,驗證了本方案設計的有效性。
[Abstract]:With the improvement of social and economic level and the development of science and technology, people have higher requirements for modern convenient life. As a basic means of travel in modern life, automobile has become an important part of people's daily life, and has a higher requirement for comfort and safety of automobile. Intelligent car key system improves the automatic degree of the car and greatly facilitates users. However, the traditional intelligent vehicle key system adopts quasi-bi-directional communication mode, which is easy for attackers to intercept low-frequency messages and then induce high-frequency encrypted signals, so there is a security hazard. Even if full two-way communication mode is used to eliminate this hidden danger, it can not effectively prevent relay attacks. Distance boundary protocol can prevent relay attack in theory, but the theory of distance boundary protocol needs high time precision and lacks of widely applicable implementation scheme. As an extension of the Internet of things, the Internet of vehicles realizes the collaborative interaction among people, cars, roads and environments, which will make users have a safer and more comfortable driving environment. The intelligent car key system in the future will also become an important part of the Internet of cars. However, the traditional intelligent vehicle key system can not be effectively combined with the body control module, and then it can not expand to realize more functions in the car, nor can it connect to the network to communicate with the outside world, so it is not in line with the trend of the development of the car network. In this paper, the key system of intelligent vehicle is improved, and a security protection scheme is put forward. The remote control of vehicle is realized through wireless network, and the key system of intelligent vehicle is integrated with CAN bus in the vehicle. The safety protocols of communication between vehicle and server and between car and key are designed and realized. Through the introduction of wireless network, when the user is away from the car, the local intelligent vehicle key subsystem can be shut down through the network, and the attack mode such as relay attack against the intelligent vehicle key system can be isolated. At the same time, the vehicle status information can be monitored remotely, if attacked, the remote alarm can be made, so that the user can take corresponding measures. Through the introduction of CAN bus, the intelligent car key system is integrated into the body control system. The system has the advantages of good real-time performance, high reliability and convenient expansion, and is convenient for accurate and rapid fault diagnosis and updating firmware program. The hardware and software platform of the system is built, including hardware platform, antenna design and manufacture, software, protocol design and development, etc. Finally, the security policy and functions of the system are tested, and the effectiveness of the scheme is verified.
【學位授予單位】：吉林大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：U463.6
[Abstract]:With the improvement of social and economic level and the development of science and technology, people have higher requirements for modern convenient life. As a basic means of travel in modern life, automobile has become an important part of people's daily life, and has a higher requirement for comfort and safety of automobile. Intelligent car key system improves the automatic degree of the car and greatly facilitates users. However, the traditional intelligent vehicle key system adopts quasi-bi-directional communication mode, which is easy for attackers to intercept low-frequency messages and then induce high-frequency encrypted signals, so there is a security hazard. Even if full two-way communication mode is used to eliminate this hidden danger, it can not effectively prevent relay attacks. Distance boundary protocol can prevent relay attack in theory, but the theory of distance boundary protocol needs high time precision and lacks of widely applicable implementation scheme. As an extension of the Internet of things, the Internet of vehicles realizes the collaborative interaction among people, cars, roads and environments, which will make users have a safer and more comfortable driving environment. The intelligent car key system in the future will also become an important part of the Internet of cars. However, the traditional intelligent vehicle key system can not be effectively combined with the body control module, and then it can not expand to realize more functions in the car, nor can it connect to the network to communicate with the outside world, so it is not in line with the trend of the development of the car network. In this paper, the key system of intelligent vehicle is improved, and a security protection scheme is put forward. The remote control of vehicle is realized through wireless network, and the key system of intelligent vehicle is integrated with CAN bus in the vehicle. The safety protocols of communication between vehicle and server and between car and key are designed and realized. Through the introduction of wireless network, when the user is away from the car, the local intelligent vehicle key subsystem can be shut down through the network, and the attack mode such as relay attack against the intelligent vehicle key system can be isolated. At the same time, the vehicle status information can be monitored remotely, if attacked, the remote alarm can be made, so that the user can take corresponding measures. Through the introduction of CAN bus, the intelligent car key system is integrated into the body control system. The system has the advantages of good real-time performance, high reliability and convenient expansion, and is convenient for accurate and rapid fault diagnosis and updating firmware program. The hardware and software platform of the system is built, including hardware platform, antenna design and manufacture, software, protocol design and development, etc. Finally, the security policy and functions of the system are tested, and the effectiveness of the scheme is verified.
【學位授予單位】：吉林大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：U463.6
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