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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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 ...
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Export format of gpg [closed]

What is the binary export / import format used bygpg for public and private keys?
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2answers
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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?
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1answer
4k views

How to configure gpg to enter passphrase only once per session

Is it posible to configure gpg in a way that I enter passphrase only once, and it will work for the whole session (I'm using Ubuntu/XFce)? I'm not sure how gpg works, it seems that the default ...
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RSA 2048 keypair generation: via openssl 0.5s via gpg 30s, why the difference?

RSA 2048 keypair generation: via openssl 0.5s via gpg 30s, why the difference There are several programs which can gerate RSA public/private keypairs GnuPG/OpenPGP for instance has a wizzard being ...
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4answers
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Receive Pop/IMAP email and then forward as encrypted to gmail

Basically, I have an email account I can access as POP3 or IMAP. I want to take all incoming emails, encrypt them, and then forward the encrypted version to my gmail account (so I can see the ...
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1answer
2k views

Encrypt files using gpg (and them symetric encrypting the key) - is it a normal thing to do in the *nix world?

I read a lot of articles about using gpg to encrypt email, but I would like to use it to encrypt some files - mainly a bunch of *.isos. I'm going to describe what I thought I would do, so you can ...
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2answers
1k views

Adding “random number entropy” for GPG keys?

In the following video: Linux HOWTO: Secure Your Data with PGP, Part 2, you are shown how to create a key pair with gpg. At about 1:50, the instructor says the following: While the key is being ...
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1answer
2k views

gpg starting gpg-agent on demand?

The man page of gpg-agent states: The agent is usualy started on demand by gpg, gpgsm, gpgconf or gpg-connect-agent. Thus there is no reason to start it manually. In case you want to ...
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1answer
171 views

measure amount of data read from /dev/random

background I have written a collection of bash scripts (most of them in German only yet but if you are interested; download the archive not the single scripts) which help users create high-quality ...
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1answer
724 views

Automated Clonezilla backup and GPG encryption

I have a desktop Linux system which I regularly create clones of to a local RAID-6 array using Clonezilla. It's proven to be quite a hassle to walk through the backup process, which takes quite a few ...
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3answers
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Skype missing GPG key

I wanted to install Skype on Scientific Linux 6.1: yum install alsa-lib.i686 dbus-libs.i686 e2fsprogs-libs.i686 expat.i686 fontconfig.i686 freetype.i686 glib2.i686 glibc.i686 keyutils-libs.i686 ...
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4answers
118 views

Parallel pausing and resuming?

I have a pretty strange thing I'm seeing as I run 8 GPG encryption jobs with GNU parallel: The command I've run is this: find . -type f -not -iname "*.gpg" | sort |parallel --gnu -j 8 --workdir ...
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1answer
170 views

How to configure gpg2 to pass smartcard PIN unless pinentry programm?

My configuration: Centos 6.5 gnugp2-2.0.14-6.el6_4.x86_64 gnupg2-smime-2.0.14-6.el6_4.x86_64 I configured gpg2 to use my signature key in smartcard gnupg V2.0. I imported my gpg signature key to ...
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1answer
30 views

Extract only the key(s) from GPG exported keypair

I have exported public and private keys to file with gpg --export and --export-secret-keys. When I examine them with gpg --list-packets. I can see that the file contains: the actual key the user ID ...