apt-get update not working in parrot OS

Question

i am trying to to do a sudo apt-get update in parrot OS, but all i get is this error

Err:1 http://your.repo.domain/repository JollyRoger InRelease
  Could not resolve 'your.repo.domain'
Ign:2 http://dl.google.com/linux/chrome/deb stable InRelease                                                                                 
Hit:3 http://dl.google.com/linux/chrome/deb stable Release                                                                                   
Hit:4 http://deb.playonlinux.com wheezy InRelease                                            
Get:5 http://mirrordirector.archive.parrotsec.org/parrot parrot InRelease [14.6 kB]          
Err:5 http://mirrordirector.archive.parrotsec.org/parrot parrot InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY ED05F7B2EC3C9224
Reading package lists... Done
W: GPG error: http://mirrordirector.archive.parrotsec.org/parrot parrot InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY ED05F7B2EC3C9224
E: The repository 'http://mirrordirector.archive.parrotsec.org/parrot parrot 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.

how can i fix it permanently?

Answer 1

The apt packaging system has a set of trusted keys that determine whether a package can be authenticated and therefore trusted to be installed on the system. Sometimes the system does not have all the keys it needs and runs into this issue. Fortunately, there is a quick fix. Each key that is listed as missing needs to be added to the apt key manager so that it can authenticate the packages.

Looking at the error above, apt is telling us that the following key is missing:

NO_PUBKEY ED05F7B2EC3C9224

To add these keys, run the following command:

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys ED05F7B2EC3C9224

Something very similar should be executed

Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --homedir /tmp/tmp.QTeppiINUh --no-auto-check-trustdb --trust-model always --keyring /etc/apt/trusted.gpg --primary-keyring /etc/apt/trusted.gpg --keyserver keyserver.ubuntu.com --recv-keys 40976EAF437D05B5 gpg: requesting key 437D05B5 from hkp server keyserver.ubuntu.com gpg: key 437D05B5: public key "Ubuntu Archive Automatic Signing Key " imported gpg: Total number processed: 1 gpg: imported: 1

And Voila!!! You should be able to run your update command

Answer 2

Edit /etc/resolv.conf. In a Terminal window run

sudo nano /etc/resolv.conf

Comment out all other 'nameservers' #

and add the line

nameserver 8.8.8.8

and save. Press ctr + x then press the letter 'y' and press Enter again,

Then do

ping www.google.com

If this succeeds then run the following commands

sudo apt-get --download-only --reinstall install resolvconf
sudo dpkg --purge --force-depends resolvconf
sudo apt-get install resolvconf

Good luck! it worked for me.

PS Dont do while logged as root