为了解决Zynq-7000在无操作系统情况下Processing System部分开发困难的问题,研究并给出了An⁃droid操作系统在Zynq-7000 All Programmable SoC平台上移植的具体方法。通过安装交叉编译器、移植Boot⁃Loader引导程序、配置和编译Linux内核、编译Android源码、生成Android文件系统和镜像文件等步骤,完成了Android系统的移植工作。将Android系统在Zynq-7000平台启动所需要的文件拷贝到SD卡中并进行系统启动,实验结果表明Android系统移植成功,这可以使得Zynq-7000平台的开发与使用更加广泛。
Address-resolution protocol （ARP） is an important protocol of data link layers that aims to obtain the corresponding relationship between Internet Protocol （IP） and Media Access Control （MAC） addresses. Traditional ARPs （address-resolution and neighbor-discovery protocols） do not consider the existence of malicious nodes, which reveals destination addresses in the resolution process. Thus, these traditional protocols allow malicious nodes to easily carry out attacks, such as man-in-the-middle attack and denial-of-service attack. To overcome these weaknesses, we propose an anonymous-address-resolution （AS-AR） protocol. AS-AR does not publicize the destination address in the address-resolution process and hides the IP and MAC addresses of the source node, The malicious node cannot obtain the addresses of the destination and the node which initiates the address resolution; thus, it cannot attack. Analyses and experiments show that AS-AR has a higher security level than existing security methods, such as secure-neighbor discovery.
