GPG版本冲突求助：已装gnupg2却无法用HTTPS获取密钥

Hey there, let's break down what's happening and how to fix it:

Your system has two versions of GnuPG installed:

• The old 1.4.20 (linked to the gpg command) which doesn't support HTTPS for key fetching
• The latest gnupg2 (2.1.11) which does support HTTPS, but it's using the gpg2 command instead of the default gpg

Here are your solutions:

1. Use gpg2 Directly (Quick Fix) #

Since you already have the latest gnupg2 installed, just run your key fetch command with gpg2 instead:

gpg2 --fetch-keys https://keys.qubes-os.org/keys/qubes-master-signing-key.asc

This should work immediately because GnuPG 2.x added support for HTTPS key sources.

2. Set gpg2 as the Default gpg (Permanent Fix) #

If you want the gpg command to always point to the newer version, use the update-alternatives tool to configure your system's default:

1. First, check if gpg2 is already in the alternatives list:

update-alternatives --list gpg

2. If you don't see /usr/bin/gpg2 in the output, add it with a high priority:

sudo update-alternatives --install /usr/bin/gpg gpg /usr/bin/gpg2 100

3. Now select gpg2 as the default:

sudo update-alternatives --config gpg

You'll see a menu with numbered options—enter the number next to /usr/bin/gpg2 and press Enter.

After this, run gpg --version and you should see the 2.x version. Your original gpg --fetch-keys command will now work over HTTPS.

Bonus Note #

GnuPG 1.x is outdated and lacks modern features (like HTTPS support, newer encryption algorithms). It's a good idea to stick with 2.x long-term. If you want to remove the old 1.x package, you can run sudo apt remove gnupg—just double-check that no critical software depends on it first (most modern apps use gnupg2 anyway).

内容的提问来源于stack exchange，提问作者YouHaveaBigEgo