以下是 sudo apt-get update 的输出
Get:1 http://deb.torproject.org precise Release.gpg [490 B]
Get:2 http://deb.torproject.org precise Release [3,709 B]
Ign http://deb.torproject.org precise Release
Get:3 http://http.kali.org kali Release.gpg [819 B]
Get:4 http://security.kali.org kali/updates Release.gpg [819 B]
Get:5 http://downloads.sourceforge.net all Release.gpg [163 B]
Get:6 http://http.kali.org kali Release [19.4 kB]
Get:7 http://downloads.sourceforge.net all Release.gpg [17.1 kB]
Get:8 http://security.kali.org kali/updates Release [11.0 kB]
Get:9 http://http.kali.org kali/main Sources [7,555 kB]
Get:10 http://downloads.sourceforge.net all Release [1,681 B]
Get:11 http://deb.torproject.org precise/main Sources [2,885 B]
Get:12 http://deb.torproject.org precise/main i386 Packages [3,933 B]
Ign http://deb.torproject.org precise/main Translation-en_US
Ign http://deb.torproject.org precise/main Translation-en
Get:13 http://downloads.sourceforge.net all/main i386 Packages [857 B]
Get:14 http://downloads.sourceforge.net all Release [17.1 kB]
Ign http://downloads.sourceforge.net all Release
W: GPG error: http://deb.torproject.org precise Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 74A941BA219EC810
E: GPG error: http://downloads.sourceforge.net all Release: The following signatures were invalid: NODATA 1 NODATA 2
来源.列表：
## Regular repositories
deb http://http.kali.org/kali kali main non-free contrib
deb http://security.kali.org/kali-security kali/updates main contrib non-free
## Source repositories
deb-src http://http.kali.org/kali kali main non-free contrib
deb-src http://security.kali.org/kali-security kali/updates main contrib non-free
deb http://downloads.sourceforge.net/project/ubuntuxilla/mozilla/apt all main
deb http://downloads.sourceforge.net/project/ubuntuzilla/mozilla/apt all main
deb http://downloads.sourceforge.net/project/ubuntuzilla/mozilla/apt all main
问题是我无法安装任何软件，包括 okteta 甚至 vlc。
答案1
我遇到过同样的问题;问题是 Tor 的存储库是错误的。将其更改为以下内容：
deb https://deb.torproject.org/torproject.org stretch main
deb-src https://deb.torproject.org/torproject.org stretch main