4

I am facing a problem upgrading from 18.04 to 20.04 - while running apt-get update I am getting

Err:2 https://ocean.surfshark.com/debian stretch InRelease            
 The following signatures were invalid: EXPKEYSIG 1DB7590E83C8F643
 Surfshark package maintainer <admin@surfshark.com>
W: GPG error: https://ocean.surfshark.com/debian stretch InRelease:
  The following signatures were invalid: EXPKEYSIG 1DB7590E83C8F643
  Surfshark package maintainer <admin@surfshark.com>
E: The repository 'https://ocean.surfshark.com/debian stretch 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.

Though surfshark didn't even get installed properly and is broken. After some searching I tried various ways to fix it but they didn't work for me as I couldn't get any updated PPA or keys for surfshark.

Zanna
  • 70,465
Nafiul Alam Fuji
  • 153

2 Answers2

3

Go to https://support.surfshark.com/hc/en-us/articles/360017418334-How-to-set-up-Surfshark-VPN-on-Linux-

Then follow steps 1 and 2 (Basically you are downloading and running the code to install surfshark). Note: I am not pasting the steps 1 and 2 because they rely on a link to the most up to date version of surfshark, and this link may change with time.

These steps will update the keys with a valid one.

Then you can "sudo apt update" and you will see that the problem is gone.

Note2: This worked on my Kubuntu 20.10

Luís Osório
  • 31
0

It would solve the problem if the problematic PPA isn't a big deal for you now. The problem is mainly that Surfshark isn't providing updated PPA/key and the previous is expired or the digest algo sha-1 used for that repository is no longer considered safe.

First run ls /etc/apt/sources.list.d and find out the Surfshark PPA. As Surfshark is not a big deal for me now, I just ran dpkg --list (to find the package name for Surfshark) and the just run sudo apt-get purge {package-name}

It solved the problem for me and now I can do apt-get update and apt-get upgrade.and if you face problems now of "“The following packages have been kept back ..." then follow "The following packages have been kept back:" Why and how do I solve it? which solved the problem for mine

Nafiul Alam Fuji
  • 153
  • @Kulfy now no error is showing but it still isn't allowing me to upgrade saying all updates need to be installed first. but apt-get update is showing just fine. – Nafiul Alam Fuji Apr 15 '21 at 09:02
  • Are you trying to upgrade to 20.04 from 18.04? Since I assume that's a different issue, I'd encourage you to ask a new question with full error message and code formatting. See help center for details. – Kulfy Apr 15 '21 at 09:09
  • should I edit the title/body? I was actually trying to update then upgrade but ran into these problems – Nafiul Alam Fuji Apr 15 '21 at 09:11
  • Well that might change the context of the question and may make your answer invalid/incomplete answer. – Kulfy Apr 15 '21 at 09:12
  • When you run sudo do-release-upgrade to upgrade to a newer release, it should automatically disable all PPAs (informing you and asking you to confirm). Presumably the GUI for upgrading does the same thing. So you would not have had this problem if you had tried to upgrade by those methods, in theory. So I think this is really a problem (or possibly a non-problem :) related to upgrading and you should explain in your question how you are/were trying to upgrade. (cc @Kulfy ) – Zanna Apr 15 '21 at 14:55
  • @Zanna IIRC PPAs are disabled when there's no package that is to be updated or kept back. – Kulfy Apr 15 '21 at 15:33