基于FPGA加速云的Hitag2攻击算法

A Hitag2 attack algorithm based on FPGA accelerated cloud

为了验证基于Hitag2加密算法的汽车防盗系统的安全性,研究了Hitag2加密算法的通信协议与加密原理,并根据Hitag2加密算法存在的弱点,提出了一种基于FPGA加速云的Hitag2攻击算法,并在华为云FPGA加速服务器上对攻击算法进行了测试。测试结果表明,该算法能够在得到72bit密钥流后,快速获得Hitag2的初始内部状态,证明了使用Hitag2加密算法的汽车防盗系统已不再安全。

In order to verify the security of the car anti-theft system based on Hitag2 encryption algorithm and promote the development of car anti-theft system,this paper studies the communication protocol and encryption principle of Hitag2 encryption algorithm,and based on the weakness of the Hitag2 encryption algorithm applied to the chip,The FPGA accelerates the cloud's Hitag2 attack algorithm and implements the attack algorithm on the Huawei cloud FPGA acceleration server.The test results show that the method can quickly obtain the initial internal state of Hitag2 after obtaining the 72-bit key stream,which proves that the car anti-theft system using Hitage2 encryption algorithm is no longer safe.