![]() So far, so good? Now, to solve the problem, what you did was to add the new, unverified key to your system’s trusted GPG key. Since this new public key was not added in the trusted GPG key of the system, Ubuntu doesn’t download the packages from this particular repository and informs you that it could not verify the mentioned key. Probably the developer changed the GPG key and signed the repository with the new key. If the developer doesn’t renew his/her keys or if the developer changes the key, your system will complain about it.Īnd that’s exactly what happened in the error in my case. You can see the GPG keys stored on your system using this command: apt-key listĪs you can see in the screenshot above, some GPG keys also have expiry dates. This ensures that your Linux system trusts the packages coming from the repository. When you add a repository to your system, the public GPG key of its developer is added in trusted GPG keys on your system. Public key is shared and private key is kept secret.Įvery repository, be it from Ubuntu itself or a PPA or a third party repository, is signed with GPG keys by its developer. Like SSH, GPG also has public-private key pair. The APT package manager on Ubuntu and Debian-based distributions employs a trust/security mechanism with GPG. Now that you know how to fix this error, learn why this error occurs and how it was fixed. ![]() Just do an sudo apt-get update and you should not see this error anymore. The above command will add the key to the system. If you see a warning message about apt-key command being deprecated, please ignore it. Now add this public key to your Ubuntu system using the apt-key command: sudo apt-key adv -keyserver -recv-keys 68980A0EA10B4DE8 ![]()
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