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kramer65
Asked: 2014-01-04 15:36:13 +0800 CST

WARNING: The following packages cannot be authenticated. `apt-key update` doesn't work

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I'm trying to install bitcoind by simply doing sudo apt-get install bitcoind, but I get this error saying that the following packages could not be authenticated:

libdb5.1++ libcrypto++9 bitcoind

I can simply install them without authenticating them, but since this program may handle money, I would like them to be the correct ones. So I found this solution here on AskUbuntu, which suggests to do the following:

$ sudo apt-key update
$ sudo apt-get update

After the first command, it lists four keys of which it says that all remain unchanged. The second command simply does the usual, but it ends with a message saying that there was a GPG-error. After some blabla, it then says that the following signatures are invalid (freely translated from Dutch): 

BADSIG 16126D3A3E5C1192 Ubuntu Extras Archive Automatic Signing Key <[email protected]>
BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <[email protected]>

And the following signatures could not be verified because the public key is not available: 

NO_PUBKEY 1F968B3903D886E7

And the following sugnatures were invalid:

BADSIG E585066A30C18A2B Opera Software Archive Automatic Signing Key 2013 <[email protected]>

And that getting stuff from the following address has failed:

 http://extras.ubuntu.com/ubuntu/dists/precise/Release

Does anybody know what I can do to solve this?

apt

2 Answers

  1. Best Answer

    You have to add the pub key manually.

    The command is 

    sudo apt-key adv --recv-key --keyserver keyserver.ubuntu.com «key number»

    where «key number» you must replace it with the missing key.

    For example in this error you received 

    NO_PUBKEY 1F968B3903D886E7

    you can do 

    sudo apt-key adv --recv-key --keyserver keyserver.ubuntu.com 1F968B3903D886E7
sudo apt-get update

    That way you will download this key in your keyring from the keyserver (keyserver.ubuntu.com)

    About the BADSIG error, check this answer here

    • 22

  2. Not the direct answer maybe, but there is a need to update the program: update-manager-core . If any users are getting the error that packages cannot be authenticated when running update manager, then updating this program also updates update managerand provides a really quick answer.

    BTW, I used synaptic to do this update, if that is any help. Once the update processed, then update manager worked as it normally does.

    see 1204_HWE_EOL in Ubuntu wiki

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