CAN总线逆向分析:使用ICSim模拟实践

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"这篇文档是关于汽车安全领域的CAN总线逆向分析,主要介绍如何使用ICSim工具在没有实际车辆的情况下模拟CAN通信进行学习和研究。作者BaCde分享了他在实践中遇到的问题和解决方法,内容包括CAN总线的基础知识、所需的工具以及ICSim的编译和使用。" 正文: 在汽车安全研究领域,了解和掌握CAN总线协议至关重要,因为它是现代汽车电子系统间通信的主要方式。CAN(Controller Area Network)总线是一种广泛应用在制造业和汽车行业的串行通信协议,遵循ISO国际标准。由于其广播式的通信机制,类似于UDP,使得不同电子控制单元(ECU)能够相互通信,控制和管理汽车的各种功能。 从1996年开始,CAN总线在美国轿车和轻型卡车中成为标准协议,并逐渐成为全球汽车的必备通信协议。随着汽车电子化的深入,越来越多的组件通过CAN总线连接,这也意味着针对汽车的安全攻击往往需要通过CAN总线进行。 为了进行CAN总线的逆向分析和研究,作者推荐使用ICSim(Instrument Cluster Simulator),这是一个由OpenGarages开发的工具,能够模拟多个CAN信号并产生背景噪声,便于在无车或不改动汽车硬件的情况下进行练习。ICSim目前仅支持Linux操作系统,特别是在Kali Linux 2020环境下,可能会遇到"libsdl2-dev"依赖未满足的问题。为解决这个问题,可以通过`apt-get update`更新软件源,然后使用`apt-get install aptitude`和`aptitude install libibus-1.0-dev`来安装缺失的依赖。 此外,文档中还提到了其他用于CAN总线分析的工具,如can-utils、Kayak和Wireshark。can-utils是一组实用程序,用于CAN总线的管理和数据捕获;Kayak则是一个图形化的CAN数据分析工具;Wireshark,尽管主要被用作网络协议分析器,但也可以捕获和分析CAN数据包。 这份资料提供了一个全面的指南,让读者能够在安全环境中学习和实践CAN总线逆向分析。通过理解和掌握这些工具和技术,研究人员可以更深入地理解汽车的内部通信机制,从而提高汽车网络安全防护能力。

The following is the data that you can add to your input file (as an example). Notice that the first line is going to be a line representing your own hobbies. In my case, it is the Vitaly,table tennis,chess,hacking line. Your goal is to create a class called Student. Every Student will contain a name (String) and an ArrayList<String> storing hobbies. Then, you will add all those students from the file into an ArrayList<Student>, with each Student having a separate name and ArrayList of hobbies. Here is an example file containing students (the first line will always represent yourself). NOTE: eventually, we will have a different file containing all our real names and hobbies so that we could find out with how many people each of us share the same hobby. Vitaly,table tennis,chess,hacking Sean,cooking,guitar,rainbow six Nolan,gym,piano,reading,video games Jack,cooking,swimming,music Ray,piano,video games,volleyball Emily,crochet,drawing,gardening,tuba,violin Hudson,anime,video games,trumpet Matt,piano,Reading,video games,traveling Alex,swimming,video games,saxophone Roman,piano,dancing,art Teddy,chess,lifting,swimming Sarah,baking,reading,singing,theatre Maya,violin,knitting,reading,billiards Amy,art,gaming,guitar,table tennis Daniel,video games,tennis,soccer,biking,trumpet Derek,cooking,flute,gaming,swimming,table tennis Daisey,video games,guitar,cleaning,drawing,animated shows,reading,shopping Lily,flute,ocarina,video games,baking Stella,roller skating,sudoku,watching baseball,harp Sophie,viola,ukulele,piano,video games Step 2. Sort the student list in the ascending order of student names and print them all on the screen After reading the file and storing the data in an ArrayList<Student>, your program should sort the ArrayList<Student> in alphabetical order based on their names and then print the students' data (please see an example below). As you can see, here is the list of all students printed in alphabetical order based on their names and hobbies. You are not going to have yourself printed in this list (as you can see, this list does not have Vitaly). Alex: [swimming, video games, saxophone] Amy: [art, gaming, guitar] Daisey: [video games, guitar, cleaning, drawing, animated shows, reading, shopping] Daniel: [video games, tennis, soccer, biking, trumpet] Derek: [cooking, flute, gaming, swimming] Emily: [crochet, drawing, gardening, tuba, violin] Hudson: [anime, video games, trumpet] Jack: [cooking, swimming, music] Lily: [flute, ocarina, video games, baking] Matt: [piano, Reading, video games, traveling] Maya: [violin, knitting, reading, billiards] Nolan: [gym, piano, reading, video games] Ray: [piano, video games, volleyball] Roman: [piano, dancing, art] Sarah: [baking, reading, singing, theatre] Sean: [cooking, guitar, rainbow six] Sophie: [viola, ukulele, piano, video games] Stella: [roller skating, sudoku, watching baseball, harp] Teddy: [chess, lifting, swimming] Step 3. Find all students who share the same hobby with you and print them all on the screen Finally, your program should print the information related to the students who share the same hobby as you. In my case, it would be the following based on the above-mentioned file. There are 0 students sharing the same hobby called "hacking" with me. There are 1 students (Teddy) sharing the same hobby called "chess" with me. There are 2 students (Amy, Derek) sharing the same hobby called "table tennis" with me.

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