The following signatures were invalid: EXPKEYSIG ED444FF07D8D0BF6 Kali Linux Repository

invalid: EXPKEYSIG ED444FF07D8D0BF6 Kali Linux Repository"/>

The following signatures were invalid: EXPKEYSIG ED444FF07D8D0BF6 Kali Linux Repository

今天，使用kali 系统运行apt-get update时，报了如下错误：

root@kali:~# apt-get update
Get:1  kali-rolling InRelease [30.5 kB]
Err:1  kali-rolling InReleaseThe following signatures were invalid: EXPKEYSIG ED444FF07D8D0BF6 Kali Linux Repository <devel@kali>
Reading package lists... Done
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error:  kali-rolling InRelease: The following signatures were invalid: EXPKEYSIG ED444FF07D8D0BF6 Kali Linux Repository <devel@kali>
W: Failed to fetch   The following signatures were invalid: EXPKEYSIG ED444FF07D8D0BF6 Kali Linux Repository <devel@kali>
W: Some index files failed to download. They have been ignored, or old ones used instead.
root@kali:~# apt-get update
Get:1  kali-rolling InRelease [30.5 kB]
Err:1  kali-rolling InReleaseThe following signatures were invalid: EXPKEYSIG ED444FF07D8D0BF6 Kali Linux Repository <devel@kali>
Reading package lists... Done
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error:  kali-rolling InRelease: The following signatures were invalid: EXPKEYSIG ED444FF07D8D0BF6 Kali Linux Repository <devel@kali>
W: Failed to fetch   The following signatures were invalid: EXPKEYSIG ED444FF07D8D0BF6 Kali Linux Repository <devel@kali>
W: Some index files failed to download. They have been ignored, or old ones used instead.
root@kali:~

经过查询，找到了一下两个链接，成功解决

解决方案：

方法1：

wget -q -O - .asc | apt-key add

方法2：

root@kali:~# wget .1_all.deb
root@kali:~# apt install ./kali-archive-keyring_2018.1_all.deb:~# wget .1_all.deb
root@kali:~# apt install ./kali-archive-keyring_2018.1_all.deb

方法3：

apt-key adv --keyserver hkp://keys.gnupg --recv-keys 7D8D0BF6keys.gnupg --recv-keys 7D8D0BF6