源

阿里云

deb http://mirrors.aliyun.com/kali kali-rolling main non-free contrib
deb http://http.kali.org/kali kali-rolling main non-free contrib

GPG key 错误

wget -q -O - archive.kali.org/archive-key.asc | apt-key add

如何提示没有安装gnupg，gnupg2，gnupg1，换回原来的源，然后apt install gnupg* 即可