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I was thinking about putting only my real name into it without any email address as they possibly will change anyway over the years as well as nobody shall send an email to the master key as well.
#WHAT IS GPG MAIL OFFLINE#
I posted some more elaboration on offline keys in another answer.īack to your questions: Primary User ID Without Mail Address
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Storing it offline can be reasonable to enhance it's security, as chances of getting hold of it in case your computer gets corrupted are lowered it would have to be on your computer at the time being corrupted. Going through a couple of thread it seems like the most popular scheme for maximum security is to have an offsite master (sign-only) key which provides a shell for a couple of daily-use subkeys. Generating a GPG key on your system is a simple one-command procedure.Your primary key (which is the OpenPGP saying for what you called "master" key) is the entity all other subkeys and user IDs are bound to.
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#WHAT IS GPG MAIL INSTALL#
If you use Arch based distributions, install the gnupg package with the pacman command: sudo pacman -S gnupg Step 2: Generating a GPG key On Debian and Ubuntu-based systems, install the gpg package: sudo apt install gpg
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GPG can be found in most distribution’s repositories out of the box. And for that, I’ll show you how you can share your public key with others. After that, you can use this knowledge in a real-world situation (if need be). My aim is to get you acquainted with GPG commands and functioning. Of course, this is not a practical use case but that’s also not the purpose of this tutorial. You encrypt the file and then decrypt it on the same system. You are not sending the files to other system. I presume that you have just one system and you want to see how GPG works. Now that you are a bit familiar with the concept, let’s see how you can use GPG for encrypting a file and then use it to decrypt. But it’s better to not go in to those details right now. Since your Linux system has the public file, it understands that the package is actually coming from the trusted developer.Ī number of encrypted services use some sort of GPG implementation underneath without you realizing it. The developer signs the packages (generates a signature) with his/her private key. You add the public key of the developer into your system’s trusted keys. One of the most common example of using GPG is in Linux package manager, specially the external repositories. You are already using GPG without realizing And if a file was encrypted with a public key, it can only be decrypted with the corresponding private key. In other words, if a file was encrypted with a private key, it can only be decrypted with the corresponding public key. Thus allowing others to publicly post files without worry of people besides you being able to read them. This also works in the opposite direction! Other people can encrypt files using your public key, and the only way it’ll be able to be decrypted is with your private key. As the only way they’ll be able to decrypt the file is with your public key, which would only work if the file was encrypted using your private key in the first place. It allows you to encrypt files locally and then allow others to be ensured that the files they received were actually sent from you. This is where GPG’s main approach for encryption comes into play. The public key on the other hand is meant to be given to others, or anyone you want to be able to decrypt your files. The private key is meant to be stored in a fashion stated directly in its name – privately, and not given out to anyone. The new, encrypted file can then only be decrypted with the paired public key. When you encrypt a file with GPG, it uses the private key. These two keys are tied to each other, and are both needed to use all of GPG’s functionality, notably encrypting and decrypting files. GPG keys work by using two files, a private key and a public key.