The GNU Privacy Guard (GnuPG) is a free replacement for PGP.

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How do I use GNUPG to create a signed message?

To better explain I used gpg --output encrypt.txt --sign encrypt to create an encrypted file that can be decrypted with my public key, but what I would like to do is to output an encrypted message ...
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48 views

Broken package ubuntu-keyring (ubuntu 15.04 64 bit)

I've tried to reinstall ubuntu-keyring, because i couldn't fix some GPG errors, but the apt system has failed, Now, i can't even upgrade or install anything. i tried i lot of things such as : sudo ...
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14 views

trying to import GPG key to launchpad

i am totally new to ubuntu and i want to get involved in development process. I went through the processes of setting up my pc according to the requirement and i am struck at uploading GPG key to the ...
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2answers
54 views

Installing Tor on Ubuntu 14.04

Hey guys I've tried installing Tor on my Ubuntu 14.04 but with no luck. I did just as the instructions in the official Tor website said but a problem appears in the middle. The instruction says: ...
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0answers
15 views

How to remove old, unused keyrings in /etc/apt/trusted.gpg.?

I frequently receive error messages of the following type: gpg: keyblock resource `/etc/apt/trusted.gpg.d/rwky-nodejs.gpg': resource limit It seems apt-key available cannot handle so many ...
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1answer
17 views

How to transfer Launchpad SSH and OpenPGP keys to another computer?

I maintain some PPAs at launchpad. I created SSH and OpenPGP keys for that. If I need to update a PPA from another computer, I will have to transfer these keys there. I tried to export and import ...
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22 views

libgpg-error throws gcc fatal error

Attempting to install some GnuPG packages on Ubuntu 12.04 When attempting to install libgpg-error, I am getting a gcc fatal error. Here are the commands I am running (in the libgpg-error directory) ...
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1answer
54 views

getting GPG error while runnign “sudo apt-get update” command [duplicate]

System detail: Ubuntu 14.04 LTS (64 bit) Executing command on terminal: sudo apt-get update Got Error: . . . Fetched 2,079 kB in 1min 1s (33.7 kB/s) Reading ...
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33 views

I can't open programs on flash drive

There is a "start linux 64 bit" application in a file folder for a PGP encryption program I installed. When I try to run it it says: Oops! There was a problem running this software. Unable to locate ...
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24 views

GPG adding secret key

I have trouble with gpg commands. I downloaded a public key, saved it with gedit with, imported it with gpg. Now when i decrypt a message, it wants a secret key. This key is outputed and i have to ...
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1answer
16 views

GPG having trouble

Im having trouble with GPG. I downloaded a public key saved it with gedit and imported it. Now i have the public key but not a secret key. How can i import also the secret key?
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2answers
88 views

Untrusted packages warning

When I try to update my system I get following warnings: W: GPG error: http://archive.canonical.com vivid Release: The following signatures couldn't be verified because the public key is not ...
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1answer
52 views

GPG key issue qTox repository

I have noticed that after installing qTox and its repository, that when running the commands (and it's either at the end of the first one, or at the beginning of the second one, sorry, but I cannot ...
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37 views

Empty list in Trusted Software Providers

I was checking something on the Software & Updates and I noticed that in the Authentication tab, the list with the Trusted software providers is empty! Does anyone know how can I recover the list ...
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1answer
42 views

How to use an exisiting OpenPGP key from Launchpad

I want gpg to use my existing active OpenPGP key from Launchpad without having to generate and import a new key. $ gpg --list-keys returns nothing. Btw I'm trying to sign the Code of Conduct $ ...
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17 views

The following signatures couldn't be verified because the public key is not available [duplicate]

I opened up the terminal typed sudo apt-get update and after it finished I got this GPG error: <W: GPG error: http://repository.spotify.com stable InRelease: The following signatures couldn't be ...
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74 views

gpg-agent not handling ssh after ubuntu upgrade

My ubuntu 14.10 setup had gpg-agent handle ssh logins as per the instructions here: http://www.bootc.net/archives/2013/06/09/my-perfect-gnupg-ssh-agent-setup/ It stopped working after I upgraded ...
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2answers
76 views

The safest way to backup GPG and SSH keys

I have, in Ubuntu 14.10, generated a public and private GPG and SSH key set, but I am now needing to do a fresh install and don't want to lose them but don't just want to put them as text files on a ...
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0answers
25 views

Apt-Get missing keys and won't let me add new ones [duplicate]

APT gives me this when I run sudo apt-get update: W: GPG error: http://repository.spotify.com stable InRelease: The following signatures couldn't be verified because the public key is not ...
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1answer
28 views

gnuPG encrypt and decrypt folder

I use this command to compress and encrypt a directory: tar zcvf - /tmp/directory | gpg -c > /tmp/directory.tar.gz.gpg What is the command to decrypt and unpack at the same time?
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2answers
86 views

How do I safely uninstall gnupg?

Warned by Enigmail they soon won't support gnupg and switch to gnupg2 I installed the later. Now trying to remove gnupg, I see a bunch of software will be removed as a consequence: apt apturl ...
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1answer
26 views

How to get rid of “The authenticity of host 'bazaar.launchpad.net (91.189.95.84)' can't be established.”

I have seen the response when ever I ssh to a server for the first time. After I give yes, it is never asked again. My question is, is there a way to solve this ? I mean I am expecting, from the very ...
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36 views

Passphrase in a script

I am trying to decrypt the content of a gEdit tab using an external script. My script is based on this article: http://blog.brunobraga.net/encrypting-and-decrypting-with-gedit/ #!/bin/bash ...
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23 views

Update Manager Error message [duplicate]

I get this message when I use Update Manager: W: GPG error: http://archive.ubuntu.com precise Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing ...
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803 views

Failed to add GPGKEY at http://cuda-repo/repos/GPGKEY to apt keys

I am trying to install JetPack-1.1.0 to my Ubuntu 14.04.2 x86_64 laptop. When the installation was at between %80 and %90 it warned me for installation of cuda-toolkit-6-5 cuda-cross-armhf-6-5 failed. ...
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1answer
190 views

Too many no_pubkey errors . How to fix?

After some updates few months ago i have these outputs: W: Erro GPG: http://sft.if.usp.br trusty Release: As assinaturas a seguir não puderam ser verificadas devido à chave pública não estar ...
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1answer
58 views

How to revoke old OpenPGP keys?

I've been foolish over the years and created a few OpenPGP keys for various reasons (mostly self teaching) and never revoked any of them or changed them etc before re-installs or whatnot. Anyhow I ...
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1answer
49 views

GnuPG key management - Revoke, delete or expire? [closed]

What's the best practice for eliminating keys you don't want? So I figured out that I have an extra set of keys. What I want to know is if I should expire the ones I don't want or revoke them or ...
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1answer
33 views

GnuPG Error - GnuPG failed to start because of “unsafe permissions” [duplicate]

Every time I start Kubuntu, I get same error. Here is the KSnapshot: Any suggestions on how to fix it?
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23 views

Key exists already but getting GPG error

I am using Ubuntu 14.04 64 bit desktop,and updating worked fine before, but suddenly it doesn't (it is a long time from last updating, so I can't ensure what operation leads this problem). As you ...
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1answer
142 views

Can't connect to ubuntu keyserver when guest in virtualbox

I'm trying to install an application on an Ubuntu 10.04 via a ppa. This setup is necessary since a customer's error seems to be platform dependent. Here's what sudo add-apt-repository ppa:user/app ...
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1answer
172 views

Unable to update ubuntu 12.04: GPG error : the public key is not available: NO_PUBKEY 3EF2666A18CEC0F6

W: GPG error: http://download.opensuse.org Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3EF2666A18CEC0F6 W: Failed to fetch ...
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2answers
114 views

GPG says that it needs a passphrase but it actually doesn't

I try to use GPG to sign files but something confuses me: If I enter in the terminal (the file I want to sign is called "checksums") it says: $ gpg -s checksums You need a passphrase to unlock ...
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0answers
18 views

Trouble adding a PPA and verifying with signing ring [duplicate]

I'm trying to add the ppa deb http://ppa.launchpad.net/sunab/kdenlive-release/ubuntu trusty main I've tried adding it to /etc/apt/sources.list but during the update process I get this error. W: ...
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1answer
266 views

GPG Password Agent and SSH Key Agent

Yesterday I wanted to add an app to the startup menu, and I noticed that there are two instances that weren't there before: GPG Password Agent and SSH Key Agent. I didn't install those, and I read it ...
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1answer
25 views

gpg equivalent of ssh-add?

I'm trying to use a passphrase-protected GPG key with Obnam, which invokes gpg (1.4.x on Ubuntu Server 14.04) in batch mode. gpg can't ask for the password in batch mode. All gpg-agent stuff that I ...
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2answers
3k views

Signatures not verified [duplicate]

These are the signature errors that persist after I tried several fixes mentioned on the Internet W: GPG error: http://deb.opera.com stable InRelease: The following signatures couldn't be verified ...
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1answer
108 views

gnupg permissions problems on dual OS machine

I am running Thunderbird with GnuPG on a dual OS machine (Ubuntu 14.04 and Windows 8.1). I forward Ubuntu's GnuPG to the Windows GnuPG with a symlink (according ...
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1answer
77 views

GPG Key/File Naming Confusion

When managing encryption keys in Ubuntu, I created a GPG key through the CLI with gpg --gen-key. Ubuntu provides a nice little GUI for managing keys called "Passwords and Keys". It however lists keys ...
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1answer
449 views

How to easily install any GPG GUI on Ubuntu that actually works?

I am trying to install any GnuPG GUI for easy encryption/decryption of text, and I feel like I am in bizarro world where nothing works at all. On Mac OS X, I use GPGTools and it works flawlessly, so I ...
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6answers
1k views

PGP Enigmail Problem, can no longer decrypt or sign my own messages

From one day to another my Enigmail Thunderbird Plug-In stopped working and I can no longer decrypt messages send to me encrypted with my public key. Even if I wrote these messages myself. Every time ...
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2answers
129 views

Silent installation for apt-get

For work I have to prepare a lot of PCs. I have to shove bunch of sudo apt-get install commands into the terminal - that's quite tedious. I could probably put all of them into sh script (maybe), but ...
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1answer
74 views

What is GPG error?

When my update is complete I am getting an GPG error but I don't know what is GPG.Can someone explain me what is this error and why it has occurred? I know how to fix it but I want to know what is ...
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1answer
282 views

Package with bad signature got instlaled on second try: how?

I executed my daily sudo apt-get update && sudo apt-get upgrade command, and got a bad signature error when hitting google chrome: Fetched 2178 kB in 2s (981 kB/s) Reading package lists... ...
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46 views

Updated to 14.04, Mutt only S/MIME? Whence PGP/MIME?

I might be going senile. Using the stock Mutt on 13.04 I was able to something like (E)ncrypt (from memory) and have it use GnuPG. With 14.04, the Mutt 1.5.21 that came with the upgrade, there's an ...
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137 views

Seahorse/gnupg: encryption not working properly in 14.10

I installed both 32bit and 64bit Utopic Unicorn on 2 PCs. As I usually do, I copied the .gnupg folder into the /home directory and installed seahorse-nautilus. Now I can decrypt my old files as usual ...
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268 views

gpg ask for passphrase every time although gpg-agent is configured

On Kubuntu Trusty and before, I had the GnuPG agent set up such that it would only ask for the password occasionally, like this: I have a .gnupg/gpg.conf: utf8-strings keyserver-options ...
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2answers
314 views

Unable to connect and GPG Error on Ubuntu 14.04

I have been getting the following error when i apt-get update Err http://extras.ubuntu.com trusty InRelease Err http://extras.ubuntu.com trusty Release.gpg Unable to ...
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1answer
66 views

How to make non-ascii-armored public key from ascii-armored secret key

I have old key pair (GnuPG keys), both only ascii-armored 1 fresh Ubuntu-Desktop 14.04 installation How can I make a non-ascii armored public key from the old secret key?
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1answer
2k views

GPG error: http://it.archive.ubuntu.com trusty InRelease: Clearsigned file isn't valid, got 'NODATA' (does the network require authentication?) [duplicate]

apt-get used to work until a couple of days ago. Now I am banging my head on the wall with no avail. This is the output from a Ubuntu server 14.04 sudo apt-get update Get:1 ...