kali无法更新,显示没有签名signatures were invalid

  The following signatures were invalid: EXPKEYSIG ED444FF07D8D0BF6 Kali Linux Repository <[email protected]>

Get:2 http://mirrors.neusoft.edu.cn/kali kali-rolling InRelease [30.5 kB]   

Err:2 http://mirrors.neusoft.edu.cn/kali kali-rolling InRelease

  The following signatures were invalid: EXPKEYSIG ED444FF07D8D0BF6 Kali Linux Repository <[email protected]>

Reading package lists... Done

W: GPG error: http://mirrors.ustc.edu.cn/kali kali-rolling InRelease: The following signatures were invalid: EXPKEYSIG ED444FF07D8D0BF6 Kali Linux Repository <[email protected]>

E: The repository 'http://mirrors.ustc.edu.cn/kali kali-rolling InRelease' is not signed.

N: Updating from such a repository can't be done securely, and is therefore disabled by default.

N: See apt-secure(8) manpage for repository creation and user configuration details.

W: GPG error: http://mirrors.neusoft.edu.cn/kali kali-rolling InRelease: The following signatures were invalid: EXPKEYSIG ED444FF07D8D0BF6 Kali Linux Repository <[email protected]>

E: The repository 'http://http.kali.org/kali kali-rolling InRelease' is not signed.

N: Updating from such a repository can't be done securely, and is therefore disabled by default.

N: See apt-secure(8) manpage for repository creation and user configuration details.

解决：

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

添加新密钥即可。