如何让 apt-get 源验证工作？

Question

示例（使用 Debian Wheezy）：

sudo apt-get source hello

结果：

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Need to get 705 kB of source archives.
Get:1 http://ftp.us.debian.org/debian/ testing/main hello 2.8-3 (dsc) [1287 B]
Get:2 http://ftp.us.debian.org/debian/ testing/main hello 2.8-3 (tar) [697 kB]
Get:3 http://ftp.us.debian.org/debian/ testing/main hello 2.8-3 (diff) [6598 B]                                                               
Fetched 705 kB in 8s (80.6 kB/s)                                                                                                              
gpgv: keyblock resource `/root/.gnupg/trustedkeys.gpg': file open error
gpgv: Signature made Wed Feb 13 10:30:20 2013 UTC using RSA key ID 9F1B8B32
gpgv: Can't check signature: public key not found
dpkg-source: warning: failed to verify signature on ./hello_2.8-3.dsc
dpkg-source: info: extracting hello in hello-2.8
dpkg-source: info: unpacking hello_2.8.orig.tar.gz
dpkg-source: info: unpacking hello_2.8-3.debian.tar.gz

dpkg-dev 和 debian-keyring 软件包已经安装。

我尝试以用户身份以 root 身份运行 apt-get source，预先以用户身份和 root 身份使用“gpg --recv-keys 9F1B8B32”。没有任何帮助来验证下载的源。

我怎样才能摆脱这个“dpkg-source：警告：无法验证签名”警告？

Answer 1

做

apt-get install debian-keyring

安装所有 debian 开发人员密钥环。在那之后它会检查。