Fix Public Key Parrot OS Update Error

Get:1 http://mirrordirector.archive.parrotsec.org/parrot stable InRelease [14.6 kB]
Err:1 http://mirrordirector.archive.parrotsec.org/parrot stable InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY ED05F7B2EC3C9224


Fix command line:

Code:

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

Notice the Key and should be same as in your error!

then

Code:

sudo apt update --fix-missing

Code:

sudo apt update -y && sudo apt upgrade -y

Or

Code:

sudo apt update -y && sudo apt full-upgrade -y --allow-downgrades

Bashrc Function

Code:

function updatekey(){
# Usage: ./fix.sh "Key"
#
# Setups:
var=$1
#
#
# See if args are missing!.....
if [ $# -lt 1 ]; then
  echo "Enter Public Key To Add"
  read var
fi
#
#
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys $var
}

put above into your bashrc file!!!