GNuPG - GPG , OpenPGP standard

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GNuPG - GPG ?

It’s a free and open source implementation of the OpenPGP standard for data encryption and digital signatures. It is widely used for having Secure Shell connections without password or any means of interactive authenticate, which improves security level

How do you export your public key

You need to make your public key freely accessible, but not share your private key. Below is the command to export your public key

gpg --armor --export EMAIL_ADDRESS > public_key.asc

where the EMAIL_ADDRESS is the email address associated with your public key.

Next search for the 8 digit string (primary id) associated with the key you want to export. Then use below command

gpg --send-keys PRIMARY_ID

here the PRIMARY_ID is the actual ID of that key.

So, the public key is available in the key server and is publicly available.

Create and use a GNuPG key

1. First of all install haveged using below command

    sudo apt-get install haveged
   

   To speed up the random byte process, then run beloe commands

    gpg --gen-keys
    gpg --list-keys
   

   It should show below kind of result

    pub 2048D/NNNNNNNN 2019-2-3
    uid                Name <abc@alphabet.org>
    sub 2048D/xxxxxxxx 2019-2-3
   

2. Publish

    gpg --keyserver pgp.abc.org --send-keys NNNNNNNN
   

Conclusion →

In the this blog we understood, what is GNuPG key, how to make the public key accessible and how to create and use a GNuPG key.

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