Questions tagged [pgp]

Pretty Good Privacy (PGP) is a data encryption and decryption computer program that provides cryptographic privacy and authentication for data communication.

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PGP, S/MIME and Thunderbird

I am using PGP encryption for my emails, my friend uses S/MIME. We both use thunderbird to write emails. When he writes me a signed email, I can verify the signature and, similarly, he can verify mine....
0 votes
0 answers
45 views

archive manager / file-roller to encrypt & decrypt pgp files

Is there any way to open/decrypt .pgp files in the gui? It would be great if archive manager was able to do this.
0 votes
0 answers
198 views

PGP Encryption with C#

Hi I am new to PGP Encryption. below issue i am facing is I am Encrypting a csv file with PGP public key using a C# Console application. When I am Encrypting the file into File System another Team is ...
0 votes
1 answer
217 views

How do I get gpg to actually add keys properly?

I've tried following along with this tutorial: https://linuxhint.com/generate-pgp-keys-gpg/ I used sudo gpg --full-generate-key and it seemed to be happy enough but when I tried gpg --list-keys ...
13 votes
1 answer
18k views

What is the difference between PGP and RSA protocols?

PGP and RSA protocols are the two widely used protocols in a number of servers and email applications for security with public/private key pair. What is the difference between them? What other popular ...
20 votes
3 answers
21k views

gpgkeys: key F60F4B3D7FA2AF80 not found on keyserver

How can I fix this issue? mona@pascal:~$ sudo apt-get update Ign file: InRelease Get:1 file: Release.gpg [181 B] Get:2 file: Release [196 B] ...
-2 votes
1 answer
723 views

How do I solve this GPG Key error [duplicate]

This occurs every time I run sudo apt update :
4 votes
3 answers
7k views

How do i generate a certificate to sign pdf electronically?

I'm stuck trying to figure out what kind of certificate I need to create, and how to create it to sign PDF's with LibreOffice. I created a GnuPG key, that did not work. I tried to create a private key ...
12 votes
1 answer
1k views

How to cache pgp passphrase permanently with seahorse (14.04)

I am trying to get seahorse-daemon (formerly seahorse-agent) to cache the passphrase for private pgp keys permanently. I have used dconf-editor to set gpg-cache-method to always, but the setting is ...
2 votes
1 answer
2k views

key Server indicated failure for sending gpg keys

Server indicated failure for sending keys debian@osboxes:~/$ gpg --keyserver keyserver.ubuntu.com --send-keys 8D32FF6AEEB7BA37 gpg: sending key 8D32FF6AEEB7BA37 to hkp://keyserver.ubuntu.com gpg: ...
0 votes
1 answer
351 views

How to recover keys

I recently did a fresh installation of Ubuntu 20.04 on my workstation. I made a complete backup of my home directory, and have been pulling out the bits that I need. I had set up a signing key for my ...
4 votes
0 answers
465 views

Why does my PPA not have any signing key?

Somehow one of the PPAs I maintain (belongs to a team) does not have a signing key. No signing key listed here Why does the PPA not have a signing key and how to fix this? Note that I can ...
2 votes
1 answer
2k views

Apt-mirror key question

Before downloading PPAs with apt-mirror I need to have the PPA GPG key installed in my key ring, e.g. by using the command add-apt-repository ppa:something/ppa After this (and editing mirror.list) ...
1 vote
2 answers
338 views

Enter GPG passphrase with Zenity GUI enviroment

I am working about a Zenity GUI based GPG application. But I have a problem with that. GPG ask passphrase for encryption in terminal with this command gpg -c $FILE. However users must enter their ...
0 votes
1 answer
4k views

Easy PGP Ubuntu 16.04

Is there easy use and install graphic pgp software for ubuntu 16.04? Not for email use. I tried to install gnupg but instructions didn't work. Can I use email versions for text use only? What would ...
1 vote
0 answers
26 views

Where can I suggest something to Ubuntu devs? [duplicate]

Ubuntu torrent downloads should include the PGP signature and the SHA256SUM. That would guarantee that the PGP signature and the S256SUM (current available at releases.ubuntu.com) aren't tampered.
2 votes
3 answers
23k views

gpg: no valid OpenPGP data found while installing brave browser

I've executed the below command line: curl -s https://brave-browser-apt-release.s3.brave.com/brave-core.asc | sudo apt-key --keyring /etc/apt/trusted.gpg.d/brave-browser-release.gpg add - I've got ...
0 votes
0 answers
35 views

Does client OS verify packages downloaded from Ubuntu main repository? [duplicate]

Packages seem to be downloaded over http from the Ubuntu main repository, so I was wondering whether the client's OS verifies the packages once downloaded? If so please could someone outline the ...
0 votes
1 answer
705 views

Apt-get NO_PUBKEY error after trying to install mongodb [duplicate]

I issued this command to try to install mongodb wget -qO - https://www.mongodb.org/static/pgp/server-4.2.asc | sudo apt-key add - It all seemed fine untill I tried to run apt-get update and got a ...
-2 votes
1 answer
866 views

GPG decryption challenge. No passphrase available - Unknown sender / GPG [closed]

I am doing an online challenge and I am wondering how someone would go about getting the data that is encrypted? any advice would be great. the website is defendtheweb.net I have put the full ...
1 vote
0 answers
2k views

Can't import keys to keyring, nothing happening

I'm trying to use Keyring's import functionality but nothing happens - neither an error of any sort, nor any of my keys getting imported into Keyring's GUI. I created a public/private key using gpg ...
17 votes
1 answer
21k views

How do I revoke a PGP key on a server?

Here's the situation, I have a PGP key I generated a long time ago and I have lost my private key. However I have a revocation certificate on my USB drive and I would like to revoke the key. After ...
0 votes
0 answers
536 views

How to import pgp backup back into smartcard?

I generated a backup of my master key and 3 sub keys following this into these archives: gpg.conf mastersub.key openpgp-recovs.d private-keys-v1.d (contains 4 .key files) pubring.kbx random_seed ...
0 votes
1 answer
6k views

What is the file named linux_signing_key.pub in the home folder and can I delete it?

I found a file linux_signing_key.pub in my home folder. What is it for? Can I safely delete it?
7 votes
1 answer
8k views

How do i back up my PGP key [duplicate]

Possible Duplicate: How to share one pgp-key on multiple machines? I am about to upgrade my computer to 11.04. But before I do I want to backup my PGP key that I use for signing my ubuntu .deb ...
0 votes
0 answers
432 views

Tried to generate PGP key with seahorse got error: Couldn't generate PGP key, not found

I'm trying to use seahorse to generate a PGP key. When I hit ok then it returns aerror Couldn't generate PGP Key, not found error What would I need to do to fix this? This is the output when I run ...
1 vote
1 answer
8k views

how to decrypt pgp file? What is best GUI tool for it?

i have my s.jpg and t.jpg encrypted. Need to decode them with nazar*.pgp how to do it? Best GUI method.? Seahorse??
171 votes
3 answers
156k views

Difference between PGP and GPG

What are the main differences between PGP (Pretty Good Privacy) and GPG (GNU Privacy Guard) in relationship with security in Ubuntu and Launchpad?
4 votes
2 answers
5k views

How to transfer public and private PGP keys to another computer?

How do I transfer public and private PGP Keys to a Mac OS X Lion machine?
4 votes
0 answers
225 views

Enigmail pgp key in Libre office

sorry if this was already answered, but I couldn't find the right answer on my own. I am using Enigmail in Thunderbird and created a pgp key (priv and pub) for myself in Enigmail. Now I want to sign ...
3 votes
1 answer
7k views

Importing GPG key in ubuntu:bionic Docker container

I am trying to import a GPG key on a Gitlab CI system with an ubuntu:bionic Docker image. To do this securely, I have to store the key in a so called secret variable (which then simply becomes an ...
1 vote
1 answer
843 views

Sync PGP key with Ubuntu keyserver [closed]

I tried to save my PGP public key on keyserver.ubuntu.com, but it didn't work. I tried to save from the console and a web form. When I save from the web form, I get the error - Unexpected POST ...
0 votes
1 answer
302 views

Add PGP key as attachment in Evolution

Using Evolution 3.28.1-2 (installed from the Ubuntu 18.04 repositories) and added my PGP key to one of my accounts. It works fine but Evolution inlines my PGP key instead of adding it as an attachment....
1 vote
1 answer
1k views

Cannot add apt key to install Koha

When I try to install Koha and run this command to add the key: wget -o- http://debian.koha-community.org/koha/gpg.asc | sudo apt-key add - I always get this error message: gpg: no valid OpenPGP ...
1 vote
1 answer
110 views

What kind of PGP key does ubuntu 2016 come with?

I'm trying to write about this subject in my blog and I didn't find an answer to which PGP key does Ubuntu come with (PGP 4, 5, open?)? It is already installed and the only thing that it says is that ...
15 votes
3 answers
6k views

Recover personal PGP key from old home

Many lives ago, I created a GPG key to sign the Ubuntu Code of Conduct on Launchpad. I haven't really used it since. Some time later, I backed up my home and started fresh. That was all back in 2009. ...
0 votes
1 answer
2k views

Restore enigmail private keys from file system

I have a newly installed Ubuntu 17.10 and do want to recover my private pgp keys from an already extracted duplicity backup. How to accomplish this task?
1 vote
1 answer
301 views

How do I use PGP with Thunderbird in 16.04? [duplicate]

I'm an Ubuntu newbie. Can anyone tell me how to set up PGP on Thunderbird today? It looks like it may have changed. Should I download more of the canonical apps (an option in software setup)?
0 votes
1 answer
98 views

Do I need Django-2.0.checksum.txt to check if the downloaded tar.gz is not malware ?

I am a newbie in Ubuntu and bash. I want to install Django on my Ubuntu 14.04 by typing bash commands in the terminal. I downloaded Django latest release from here https://www.djangoproject.com/...
0 votes
1 answer
967 views

Actions in kleopatra result in general error

I have setup a fresh kubuntu 16.10 installation from cd. I have a seperate home volume (physically and logically) which is mounted at start. After installing kleopatra I am not able to do anything ...
2 votes
2 answers
4k views

Trying to import a friend's public OpenPGP key - but nothing happening and I cannot see the key

Strange issue: A friend of mine sent me his public OpenPGP key. I tried the following: Method 1 Pasted his OpenPGP key block into a .txt file Launched seahorse and clicked on File > Import Selected ...
0 votes
1 answer
333 views

Why doesn't Ubuntu/Thunderbird save my PGP key?

I installed Thunderbird and followed the instructions from: https://help.ubuntu.com/community/GnuPrivacyGuardHowto to set up PGP. First it worked, but after restarting my system the next day, I wasn'...
0 votes
1 answer
1k views

Ubuntu 16.04 PGP Key Importing problems

I just installed Ubuntu 16.04. The only problem is that I cannot get them to show up in my Passwords and Keys application. Typing gpg --list-keys in terminal shows all the keys I've added but they don'...
7 votes
1 answer
725 views

How is the authenticity of Ubuntu updates verified?

I couldn't find much info on the security of Ubuntu (and Linux in general) update verification/security. The connection appears to be plain ftp. but the packages are signed using a private key and ...
1 vote
2 answers
7k views

Where do I find Ubuntu's PGP signatures and signing keys? [duplicate]

where can I find PGP signatures and signing keys for Ubuntu? I want to verify the download, but the only thing I can find are the MD5 hashes (https://help.ubuntu.com/community/UbuntuHashes). I can't ...
0 votes
2 answers
232 views

Unknown pgp key in my key ring

I have a key in my keyring and I don't know how it got there. Every other key I imported other than this one. How do keys make it into the keyring other than by me importing them?
20 votes
1 answer
12k views

How can I adjust the default passphrase caching duration for GPG/PGP/SSH keys?

As far as I know, gnome-keyring-daemon caches passphrases for keys by default until I log out. I would like to set the default to something like "cache for 10 minutes". How can I do that in Ubuntu 12....
6 votes
8 answers
11k 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 ...
36 votes
1 answer
27k views

How to change the gpg key of the pass password store

One can use pass as a password manager to store passwords. One thing that is not clear from the manual is whether it is possible to easily change the gpg key that is used. One initializes the ...
0 votes
2 answers
1k views

Generated pgp keys to thunderbird enigmail

I generated a keybundle by gpg --key-gen. How can I find this keys and import them to thunderbird enigmail now? And shouldn't enigmail find them by itself? It only imported the public key. I looked ...