如何修复“apt-get update 时签名无效”错误？

Question

每当我尝试时，都会sudo apt-get update收到以下错误：

W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://packages.linuxmint.com rafaela Release: The following signatures were invalid: BADSIG 3EE67F3D0FF405B2 Clement Lefebvre (Linux Mint Package Repository v1) <root@linuxmint.com>

W: GPG error: http://extra.linuxmint.com rafaela Release: The following signatures were invalid: BADSIG 3EE67F3D0FF405B2 Clement Lefebvre (Linux Mint Package Repository v1) <root@linuxmint.com>
W: Failed to fetch http://packages.linuxmint.com/dists/rafaela/Release  

W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/trusty/Release  Unable to find expected entry 'restricted/binary-amd64/Packages' in Release file (Wrong sources.list entry or malformed file)

W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/trusty/main/binary-amd64/Packages  Hash Sum mismatch

W: Some index files failed to download. They have been ignored, or old ones used instead.

所以，我做了一些阅读并尝试更改软件源区域中的镜像，并且也遵循了这个答案，并运行了这个命令：

sudo apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 3EE67F3D0FF405B2

但得到了这个对我没有帮助的结果：

Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --homedir /tmp/tmp.joWxQNcMmd --no-auto-check-trustdb --trust-model always --keyring /etc/apt/trusted.gpg --primary-keyring /etc/apt/trusted.gpg --recv-keys --keyserver keyserver.ubuntu.com 3EE67F3D0FF405B2
gpg: requesting key 0FF405B2 from hkp server keyserver.ubuntu.com
gpg: key 0FF405B2: "Clement Lefebvre (Linux Mint Package Repository v1) <root@linuxmint.com>" not changed
gpg: Total number processed: 1
gpg:              unchanged: 1

知道我还能尝试什么来解决它吗？

ps 这一切都是在尝试安装 nodejs 和 npm 时开始的。

Answer 1

这对我在 Linux Mint 17 Qiana 上有用：

sudo rm -r /var/lib/apt/lists

sudo mkdir -p /var/lib/apt/lists/partial

sudo apt-get clean

sudo apt-get 更新

sudo apt-key 列表 | grep 已过期

从该结果中获取要使用的密钥：
pub 4096R/ BE1DB1F1 2011-03-29 [过期：2014-03-28]

sudo apt-key adv --recv-keys --keyserverkeys.gnupg.net BE1DB1F1

sudo apt-get 更新

解决方案部分来自这篇文章。