Public key error

When i run apt-get update i have this errors:

Code:

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W: GPG error: http://http.kali.org /kali Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY ED444FF07D8D0BF6

W: GPG error: http://http.kali.org kali-dev Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY ED444FF07D8D0BF6

W: GPG error: http://security.kali.org kali/updates Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY ED444FF07D8D0BF6

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How can i have a valid key and why did this happen?

regards


FIXED:

for those who have the same problem:

Code:

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gpg --keyserver pgpkeys.mit.edu --recv-key  ED444FF07D8D0BF6
gpg -a --export ED444FF07D8D0BF6 | sudo apt-key add -

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replace the key with that of the key that was displayed in the error message


- - -

2018 Update

See:
- https://bugs.kali.org/view.php?id=4514
- https://twitter.com/kalilinux/status/959515084157538304

Solution: wget https://archive.kali.org/archive-key.asc -O /etc/apt/trusted.gpg.d/kali-archive-key.asc
OR: wget -q -O - https://archive.kali.org/archive-key.asc | apt-key add

i have problem with this method

Code:

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root@kali:~# gpg --keyserver pgpkeys.mit.edu --recv-key CCC158AFC1289A29
gpg: requesting key C1289A29 from hkp server pgpkeys.mit.edu
gpg: keyserver timed out
gpg: keyserver receive failed: keyserver error

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Try this

`sudo gpg --keyserver keyserver.ubuntu.com --recv-keys CCC158AFC1289A29
sudo gpg -a --export CCC158AFC1289A29 | sudo apt-key add -`

Make sure you have allowed firewall access if it continues to time out for you.

can you explain why you did this.. ;)