添加源

deb https://mirrors.ustc.edu.cn/kali kali-rolling main non-free contrib
deb-src https://mirrors.ustc.edu.cn/kali kali-rolling main non-free contrib

设置公钥

1. 方法一

   apt-key adv --keyserver keyserver.ubuntu.com --recv ED444FF07D8D0BF6

2. 方法二

   gpg --keyserver hkp://keyserver.ubuntu.com:11371 --recv-keys ED444FF07D8D0BF6
   gpg --export --armor ED444FF07D8D0BF6 |apt-key add -