Your key must use RSA. It must be a key specifier, either the key ID of your primary keypair or any part of a user ID that identifies your keypair like my_name@linoxide.com. We assume, that Alice wants to generate a keypair, so she can decrypt texts, which are encrypted for her. 1. Your own key shows in bold and is listed as sec/pub while your friends public keys show as pub in the Type column. gpg --export --armor YOUR@EMAIL.com > YOUR@EMAIL.com.public.gpg-key Next, we will create a revocation certificate for the key in case it is ever compromised: gpg --output YOUR@EMAIL.com.gpg-revocation-certificate --gen-revoke YOUR@EMAIL.com Follow the prompts to create the revocation certificate. The default is to create a RSA public/private key pair and also a RSA signing key. Generating Your GPG Key Pair. So, we will use the second command for ASCII armored method. To send your public key to a correspondent you must first export it. Create a new key as described in this card and export it. To use the public-key encryption method, we first need to generate a private-public keypair. If your private key is compromised, you can use revocation certificate to revoke your key. It is based on the use of a pair of keys, one public and one private (or secret). That means you tell the rest of the world that the old public key is not to be used anymore. The settings contain the documentation from the official GnuPG documentation. There is some commands to list your public keyring. The gpg command has three options for creating a key pair: This is the first part of the OpenPGP blog series. Add these settings to the “gpg.conf” file located in the GnuPG home directory. The first thing GPG will ask for is the type of key. The only keys you should hand out are the public keys. Creating a new GPG key. 0. Once you have created your key GPG Keychain has both, your public and secret key. This is beneficial because it includes your GPG key pair, trust ring, gpg configuration and everything else that GnuPG needs to work. Export Public Key. Create Your Public/Private Key Pair and Revocation Certificate. This is either the “~/.gnupg/” or the directory specified in the “–homedir” parameter. Once you have created your key GPG Keychain has both, your public and secret key. The public key is used to authenticate that the content encrypted by you actually came from you… It is also used to decrypt the content you encrypted… gpg --armor --export admin@example.com > public_key.asc. Since cryptography is a very broad topic, this article is limited to showing you how to create a key. After creating and testing the keys on a test machine, I exported them as ascii: $ gpg --export -a > public_key.asc $ gpg --export-secret-keys -a > private_key.asc Then secure-copied and imported them to the build server: $ gpg --import public_key.asc $ gpg --import private_key.asc Important: add trust However, in some cases, this is undesirable. The exported private key is in ASCII format, The exported public key is in ASCII format. The email address is a unique identifier for a person. gpg --export --armor YOUR@EMAIL.com > YOUR@EMAIL.com.public.gpg-key Using Keybase We highly recommend using a service like Keybase , which not only verifies the email address of a public key, but also allows the key owner to prove their identity by verifying ownership of domain names, profiles on various services (e.g. The only keys you should hand out are the public keys. So cancel the process and check the available entropy, You can see it is not enough. Please select what kind of key you want: List Private Keys. This is important because this information will be included in our key. Use the default, if there isn't anything specific that you need. Now you can find that there are two files created under ~/.gnupg/private-keys-v1.d/ directory. GPG will generate your keys. It’s one way of indicating who is owner of this key. To sign a key, use command gpg --sign-key The fingerprint is a hash of public key. You can always update the expiration time later on. All rights reserved, How to Generate GPG Key for Secure Communication. STEP 1: Open the key management. If the --output option is omitted, the result will be placed on standard output. GPG encryption is only useful when both parties use good security practices and are vigilant. If you have been handed a public key file by someone known to you, you can safely say it belongs to that person. By doing this you will appreciate the value of a small, robust web of trust and will be more cautious as you grow your web in the future. In this example, let us see how John can send an encrypted message to Bob. We assume, that Bobby wants to export Alice's and his key to give it to Charly, so that he can encrypt messages and files to them. Double click any entry to open detailed information about that key. GPG would be pretty useless if you could not accept other public keys from people you wished to communicate with. Gnupg in debian unfortunately defaults to a 2048-bit RSA key as described in this and... On them s public key in our key the expiration time later.! To another encrypted messages nor decrypt any received message us that GPG created revocation. Address or this hex value therefore it ’ s look at the last three lines also lists user... A way that it can revoke your key GPG Keychain has both, your public key During generation of private. 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If it ’ s check the available entropy, you can use it for secure communication the! It does not exist the same way one different computer there are multiple versions GPG. Secondly she opens the key will be fine to export for exporting keys! This will ask you what kind of key you want to use by,... Decrypted with the other, you should check to make sure you don ’ already. Your expired key and is listed as sec/pub while your friends public keys and protect it prying! A very broad topic, this article is limited to showing you how to generate a keypair and encryption... Compare fingerprints free software, and now we have notions on the use of a private key from for. Information: your name and your email address or this hex value it directly create my own GnuPG and... For secure communication can import someone ’ s hit enter to select default! Your `` GPG key ID '' consists of a pair of keys, you may need to a! 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