gpg is the main command line tool of the GNU Privacy Guard (GnuPG), implementing the OpenPGP standard for public key cryptography. It allows encryption, (verification of) signatures and trust models like the web of trust. gpg (and its library gpgme) are the base of many FOSS crypto applications ...

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2
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27 views

Reading GPG passphrase from the physical keyboard in OpenBSD

I'm using Synergy to control an OpenBSD desktop from a Linux computer (think of it like a VNC client/server). That is to say what I type on the keyboard goes through a network connection before it ...
2
votes
2answers
95 views

Is there a way to GLOBALLY set the DEFAULT keyserver for gpg on Debian?

I am not asking for per-request of a key, I know how to do that, but I want a chosen alternative gpg keyserver to be defaulted to, when no specific keyserver is specified in a request then-on-out. ...
0
votes
1answer
33 views

Sign a PDF file to verify integrity and validity

I've been asked to distribute electronic certificates (they were originally paper), in a PDF format, but I'd like to sign them with gpg or something similar so users can upload them to my site to ...
13
votes
2answers
2k views

How can I find out what keys gpg-agent has cached? (like how ssh-add -l shows you cached ssh keys)

ssh-add -l shows you all ssh-keys that have been added with ssh-add ~/.ssh/id_yourkey. How do I do the analogous thing with gpg and gpg-agent, in other words, ask it to show a list of cached keys?
0
votes
1answer
34 views

Create yum repo with multiple keys

I need to create a yum repository but I have 5 gpgkeys, the idea is to configure the repo and each package install its own gpgkey automatically. In other words, I need to configure multiple gpgkeys ...
1
vote
1answer
10 views

gpg will not let me change my passphrase

I want to change my gpg passphrase so I do tweedleburg:~/.gnupg # gpg --list-secret-keys /root/.gnupg/secring.gpg ------------------------ sec 1024D/43E855BB 2008-02-03 uid ...
-1
votes
1answer
21 views

Get gpg key info [closed]

I have a GPG public key, and I'd like to know its name. The key can be a file containing a text, or just the text.
-3
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1answer
22 views

Encryption issue with GPG and PGP [closed]

I want to know whether GPG or PGP are able to encrypt and decrypt a file with special and international characters in it.
4
votes
2answers
730 views

Decrypt files encrypted with gpg using xargs

I have a lot of files encrypted with gpg. All files have the same password. Is it possible to use xargs to decrypt files? ls | xargs -n 1 gpg asks for the password for every file.
0
votes
1answer
19 views

Redirect all GnuPG output to /dev/null

I'm doing key generation in a sort of batch mode with GnuPG (don't ask why): echo -e 'addkey\n4\n2048\n120d\nsave' | gpg --command-fd 0 \ --edit-key $master_key_id >/dev/null 2>&1 I ...
3
votes
2answers
65 views

monkeysphere to gnupg 2.1 workflow change

So, like many people, I was using my GPG key for SSH authentication with the help of monkeysphere, so I could load my private key to agent with monkeysphere s command and be free to connect anywhere I ...
1
vote
1answer
35 views

GPG keys copied, not working

I have copied my GPG keys from 1 server to another, on the first server everything is working correctly, on the new I get the following: (I have included the output of list-keys and list-secret-keys ...
5
votes
2answers
115 views

Silent GnuPG password request with bash commands

I'm trying to hide the "output" of a gnupg command, but it seems that it is always printed. the command is: echo "thisprogramwørks" | gpg -q --status-fd 1 --no-use-agent --sign --local-user D30BDF86 ...
2
votes
1answer
16 views

How to migrate GPG trust database from one machine to another?

I'm trying to copy my gpg related files over from an old machine to a new one. I've worked out how to copy the keys over: How to import secret gpg key (copied from one machine to another)? but this ...
1
vote
2answers
66 views

Encrypting directories with gpg

I want to use GPG for local encryption only, and after reading the man file, I'm doing the following in order to encrypt a whole directory: I zip the directory with a password "zip -r -e foo foo", ...
1
vote
0answers
9 views

Use GnuPG by default in Evolution

Is there a way to make Evolution default to encrypting messages with GnuPG? It'd be acceptable if Evolution complains and refuses to send unencrypted emails to addresses for which it lacks a gpg ...
7
votes
2answers
348 views

mutt: Use gpgme or classic gpg?

Mutt's wiki on GnuPG integration and many other places (like default on Debian) use the classic way of connecting mutt to gnupg. That is, one configures a bunch of commands to call gpg directly. On ...
2
votes
1answer
30 views

Which keys gpg exports and what is in the keyrings?

I've been making my way through what's on the internet concerning gpg lately. And I must say it's pretty confusing. Particularly, the importing/exporting part. When you generate a key, you basically ...
2
votes
1answer
41 views

Installation of GPG alongside a running one: configure problem?

I already have a production version of GPG from a previous installation. I would like to build and test the last version of GPG without interfering with the production one. I am performing this test ...
2
votes
2answers
48 views

GPG decrypt returns empty file

Im decrypting a file sent by a client using gpg. The file is Obviusly encrypted, and theoretically, using my public key. I have installed both his public key and my private key. So, im running: ...
0
votes
1answer
131 views

GPG error with http://volatile.debian.org : 'The following signatures were invalid: NODATA 1 NODATA 2'

I am currently trying to add a new repository to apt-get but it is not working. I'm adding it like this: deb http://volatile.debian.org/debian-volatile wheezy/volatile non-free Then I get this ...
3
votes
1answer
373 views

Can emacs use gpg-agent in a terminal at all?

I understand that there are problems with getting pinentry-curses to work with emacs (see some of the comments on http://emacswiki.org/emacs/EasyPG), and so using emacs in a terminal isn't compatible ...
1
vote
0answers
83 views

Decrypting with GPG after a “su - different user”

I have cron job running a script in the cron of "USER A" that encrypts many files in a loop using the gpg command below: gpg --batch --cipher-algo AES256 --passphrase "PASSWORDISHERE" -c FILENAME ...
1
vote
2answers
66 views

Is there a way to edit a password-protected file without having to retype the password all the time?

I want to encrypt a text file using a password and a way to safely edit that file. The problem I am having is that I haven't managed to find a simple way to do that while only requiring the password ...
1
vote
0answers
44 views

How can I have pinentry ask if a password should be remembered?

In this answer, the password prompt for gpg-agent includes options for how long the password should be remembered. However, in my system I get a much simpler prompt, without that option How can ...
1
vote
1answer
23 views

How do I get the Truecrypt CLI installed?

I have a unix machine with truecrypt 7.1a installed. I'm trying to mount a volume to test with the command line but I don't have the truecrypt command installed evidently. Did the command line ...
2
votes
2answers
472 views

Hard drive partition and updating trouble

I'm new to linux and am using Linux Mint 15 Olivia. I am running it alongside windows 7 and I want to increase the size of my current linux hard drive partition. I read somewhere that I should install ...
3
votes
1answer
48 views

Not possible to use batch mode?! FreeBSD gpg 1.4.19

I use a script to decrypt my password for offlineimap, but somehow it's not working anymore ... The file was encrypted with gpg --symmetric password For offlineimap I use this combination. gpg ...
1
vote
1answer
61 views

How can I tell gpg that I do not want password caching for a specific program?

I'm using gnupg 2.1.2. Usually it is quite handy when gnupg caches my passwords. But for some sensitive programs I would prefer that gnupg does not cache them with gpg-agent. I searched a good while ...
10
votes
6answers
18k views

gpg asks for password even with --passphrase

I expect the following command to extract the gpg file without asking for password: gpg --passphrase 1234 file.gpg But it asks for the password. Why? This also have the same behavior: gpg ...
9
votes
3answers
3k views

How do I tell which GPG key an RPM package was signed with?

The cryptographic signature of an RPM can be verified with the rpm -K command. This returns a string containing gpg (or pgp) and ending in OK if the signature is in RPM's database and is valid. If ...
2
votes
3answers
104 views

gpg key generation on Tails live cd - why so quick?

I just used gpg2 --gen-key to generate a 2048 bit RSA key pair on an OS running on a live cd (Tails). This happened much faster than I expected. When I have done this before on a regular machine it ...
2
votes
1answer
202 views

What are gpg-pubkey* packages?

I compared the packages list reported by RPM and YUM on a CentOS 6 and 7. I noticed the lists were slightly different (same issue with RHEL). See Listing installed packages with yum and rpm mismatch ...
3
votes
1answer
69 views

Zsh gpg2 autocompletion

I am using zsh with oh-my-zsh on OSX. I installed gnupg2 from homebrew giving me the executable gpg2. Unfortunately zsh auto completion appears to only support gpg (even though that executable is not ...
1
vote
1answer
154 views

How does GPG agent work?

I have a line in my gpg.conf file which says use-agent I understand this refers to gpg-agent which is a daemon. The man page states "gpg-agent is a daemon to manage secret (private) keys independently ...
0
votes
0answers
74 views

'Pass' password manager - does it require public key?

The 'pass' password manager uses gpg keys. http://www.passwordstore.org/ However, gpg itself can be used for symmetric encryption of files. Does pass only work using public/private keys, or is it ...
1
vote
1answer
46 views

Simple-cdd keyring addition

I'm looking to add a personal key for an apt repo to a netinstall disc which would require end users to not have to install it. I'm using simple-cdd to generate the build, so wrapping it into a .deb ...
2
votes
0answers
198 views

How do I combine SSH agent forwarding and gpg-agent?

I have an ssh-agent running on my local machine. I connect to a remote machine via SSH, with agent forwarding enabled. On that remote there is an instance of gpg-agent running. I know that recent ...
19
votes
2answers
5k views

How are the GPG usage flags defined in the key details listing?

When I list the details of a key I get output like this: $ gpg --edit-key SOMEID pub [..] created: [..] expires: [..] usage:SC [..] sub [..] created: [..] expires: [..] usage: E Or even usage: ...
2
votes
4answers
180 views

File encryption utility without key integrity check (symmetric key)

When encrypting a file with symmetric key, most common utilities (such as gpg, mcrypt, etc) store information in the encrypted message which can be used to verify integrity of the key during ...
3
votes
2answers
101 views

How to quickly generate (insecure) GPG keys?

I'd like to automate generating at least two GPG keys for testing and demonstration purposes in a virtual machine. Because of this context I want to make sure the key generation is fast, ideally not ...
7
votes
1answer
2k views

How to import secret gpg key (copied from one machine to another)?

I'm trying to copy my gpg key from one machine to another. I do: gpg --export ${ID} > public.key gpg --export-secret-key ${ID} > private.key Move files to new machine, and then: gpg ...
0
votes
3answers
148 views

creating and sending a self-signed public key using GnuPG in CentOS 7

I know that I can create a GPG keypair from the CentOS 7 terminal by typing gpg --gen-key and following the resulting steps, but how can I make sure that the resulting public key is self-signed? And ...
-2
votes
2answers
106 views

installing GnuGPG with Thunderbird on CentOS 7

How can I install GnuPG on my CentOS 7 system? I want to use GnuPG alongside Thunderbird and Enigmail to manage pgp keys, as per the instructions in this link. The problem is that the download ...
3
votes
3answers
2k views

Creating a GnuPG keyring for apache

Here's the scenario, we're using GnuPG to encrypt data between 2 web servers. 1 is on RHEL. GnuPG will be accessed through cgi scripts to encrypt and decrypt. So I need a keyring that the apache user ...
0
votes
1answer
24 views

gnupg broken after power outage

Recently I happend to experience a quite unpleasant power outage which caused my system to go down unexpectadly. After power came back the system came back as well and other than a fsck being required ...
2
votes
2answers
6k views

Invalid signatures when running apt-get update

I'm new to linux and am trying to run an update, I get a lot of "Hit"'s and "Ign"'s but in the end I get these errors, does anybody know what they mean and how I can fix them? W: GPG error: ...
1
vote
1answer
63 views

GPG Problems When Releasing With Leiningen

I'm trying to use lein release (default, not the plugin). Now, I've installed gpg-agent and pinentry-curses, and gotten to the point where a separate curses screen appears, asking me for my secret ...
0
votes
1answer
24 views

Enforcing minimum passphrase length with gpg

When encrypting a file with --symmetric option, gpg asks for the passphrase using the pinentry program (small window). I want it to reject passphrases below a certain length. How can I do this?
6
votes
1answer
192 views

How to renew an expired keypair with gpg

What is the best way to renew a gpg key pair when it got expired and what is the reason for the method? The key pair is already signed by many users and available on public servers. Should the new ...