How to enable SSH access using a GPG key for authentication

opensource.com/article/19/4/gpg-subkeys-ssh
To do this, specify the keys in the ~/.gnupg/sshcontrol file. The entries in this file are keygrips —internal identifiers gpg-agent uses to refer to keys. Unlike a key hash, a keygrip refers to both the public and private key. To find the keygrip, use gpg2 -K --with-keygrip, as shown below. Then add that line to the sshcontrol file.

A setup guide to use a personal gpg key for ssh authentication

gist.github.com/mcattarinussi/834fc4b641ff4572018d0c665e5a94d3
Retrieve the public ssh key for the subkey. gpg --export-ssh-key mattia. ssh-rsa <A_LOT_OF_STUFF_HERE> openpgp:0xA2E43D00. You can test if the key is working with your Github account. The ssh public key generated in the previous step has to be added to your Github SSH keys. ssh -T git@github.com.

How to use a GPG key for SSH authentication | Linode Docs

www.linode.com/docs/guides/gpg-key-for-ssh-authentication/
GPG is likely already installed, but if it isn't, a quick internet search should give you the instructions you need. Open a command prompt and execute: gpg2 --gen-key. When prompted to select the kind of key you want, select (1) RSA and RSA. When asked for a keysize, type 4096.

How to Login to SSH Servers using GPG Keys - Make ... - Make Tech Easier

www.maketecheasier.com/login-to-ssh-servers-using-gpg-keys/
Start by opening a GPG prompt for your main key: gpg --expert --edit-key YOUR-KEY @ EMAIL.ADDRESS. Note: you can find the email address for your main key by listing the contents of your keyring: gpg --list-keys. Type "addkey" on the GPG prompt, select "8," then press Enter. Set the capability of your subkey to "=A" then press Enter.

Generating a new SSH key and adding it to the ssh-agent

docs.github.com/en/authentication/connecting-to-github-with-ssh/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent
This creates a new SSH key, using the provided email as a label. > Generating public/private ALGORITHM key pair. When you're prompted to "Enter a file in which to save the key", you can press Enter to accept the default file location. Please note that if you created SSH keys previously, ssh-keygen may ask you to rewrite another key, in which case we recommend creating a custom-named SSH key.

Using a GPG key for SSH Authentication - Ryan Lue

ryanlue.com/posts/2017-06-29-gpg-for-ssh-auth
gpg-agent manages GPG private keys and can be used as a drop-in replacement for ssh-agent. In order for this to work, a few things have to happen: ssh must be directed to authorize via gpg-agent rather than ssh-agent (by setting SSH_AUTH_SOCK), gpg-agent must be directed to receive authorization requests from ssh (either by having the --enable ...

How To Configure SSH Key-Based Authentication on a Linux Server

www.digitalocean.com/community/tutorials/how-to-configure-ssh-key-based-authentication-on-a-linux-server
Step 1 — Creating SSH Keys. The first step to configure SSH key authentication to your server is to generate an SSH key pair on your local computer. To do this, we can use a special utility called ssh-keygen, which is included with the standard OpenSSH suite of tools. By default, this will create a 3072 bit RSA key pair.

HowTo :: SSH access using a GPG key for authentication

psylinux.github.io/posts/howto_ssh_with_gpg/
To get gpg-agent to handle requests from SSH, you need to enable support by adding the line enable-ssh-support to the ~/.gnupg/gpg-agent.conf. $ cat .gnupg/gpg-agent.conf. enable -ssh-support. Optionally, you may want to pre-specify the keys to be used for SSH so you won't have to use ssh-add to load the keys.

Adding a new SSH key to your GitHub account

docs.github.com/en/authentication/connecting-to-github-with-ssh/adding-a-new-ssh-key-to-your-github-account
In the upper-right corner of any page on GitHub, click your profile photo, then click Settings. In the "Access" section of the sidebar, click SSH and GPG keys. Click New SSH key or Add SSH key. In the "Title" field, add a descriptive label for the new key. For example, if you're using a personal laptop, you might call this key "Personal laptop ...

Connecting to GitHub with SSH

docs.github.com/en/authentication/connecting-to-github-with-ssh
Use verified email in GPG key. Authentication / Connect with SSH; Connecting to GitHub with SSH. You can connect to GitHub using the Secure Shell Protocol (SSH), which provides a secure channel over an unsecured network. ... You can secure your SSH keys and configure an authentication agent so that you won't have to reenter your passphrase ...

gnupg - How to use gpg and SSH together? - Super User

superuser.com/questions/378853/how-to-use-gpg-and-ssh-together
SSH Keys, which are to be used through the agent, need to be added to the gpg-agent initially through the ssh-add utility. When a key is added, ssh-add will ask for the password of the provided key file and send the unprotected key material to the agent; this causes the gpg-agent to ask for a passphrase, which is to be used for encrypting the newly received key and storing it in a gpg-agent ...

security - GPG vs SSH keys - Stack Overflow

stackoverflow.com/questions/51412164/gpg-vs-ssh-keys
27. They are used for different things on github. SSH is used for authentication while GPG is used for signing tags and commits. - Xaqron. Jul 18, 2018 at 23:39. 3. Note that the comment above is no longer accurate, see answer. - LinuxDisciple. Dec 20, 2023 at 3:02.

Developers Guide to GPG and YubiKey | Okta Developer

developer.okta.com/blog/2021/07/07/developers-guide-to-gpg
1. make a note of the Key ID; you will need this for a few different steps below. Add an authentication sub-key for use with SSH for authentication—more on that below. gpg --quick-add-key{your-key-id} rsa4096 auth 2y. If you list the secret keys again, you can see the new key and capability: gpg --list-secret-keys.

How to import your existing SSH keys into your GPG key

opensource.com/article/19/4/gpg-subkeys-ssh-multiples
# get the software $ dnf install -y monkeysphere # temporary_id is a temporary identifier required by GPG $ pem2openpgp temporary_id < .ssh/my_fancy_key | gpg2 --import --homedir temp_gpg/ Enter PEM pass phrase: gpg: key 66091F2C70AF02A9: public key "temporary_id" imported gpg: key 66091F2C70AF02A9: secret key imported gpg: Total number processed: 1 gpg: imported: 1 gpg: secret keys read: 1 ...

SSH Authentication with GPG. Why Authenticate with GPG - Medium

medium.com/@chrispisano/ssh-authentication-with-gpg-411676781647
1 gpg --export-ssh-key <key id> > .ssh/id_rsa.pub. The above command will export the public GPG key in SSH format to an id_rsa.pub file in the .ssh directory. The last thing to do with the public ...

Adding a GPG key to your GitHub account

docs.github.com/en/authentication/managing-commit-signature-verification/adding-a-gpg-key-to-your-github-account
Adding a GPG key. In the upper-right corner of any page on GitHub, click your profile photo, then click Settings. In the "Access" section of the sidebar, click SSH and GPG keys. Next to the "GPG keys" header, click New GPG key. In the "Title" field, type a name for your GPG key. In the "Key" field, paste the GPG key you copied when you ...

Using Keybase for SSH with gpg-agent on macOS - James Panther

jamespanther.com/writings/using-keybase-for-ssh-with-gpg-agent-on-macos/
While password authentication is the default method most SSH (Secure Shell) clients use to authenticate with remote servers, there's plenty of potential security vulnerabilities with this approach. This guide takes you through setting up public key authentication using your Keybase GPG key as an alternative method of verifying identity.

SSH Authentication to GitHub Using a YubiKey on Windows

developers.yubico.com/PGP/SSH_authentication/Windows.html
Configuring Git. Step 1 To use Git with SSH on Windows, download and install the Git client on your machine. Step 2 Check the general-key-id and authentication-key-id of the PGP keys at the YubiKey by running the command: gpg --card-status.

Generating a new GPG key - GitHub Docs

docs.github.com/en/authentication/managing-commit-signature-verification/generating-a-new-gpg-key
Download and install the GPG command line tools for your operating system. We generally recommend installing the latest version for your operating system. Open Terminal Terminal Git Bash.. Generate a GPG key pair. Since there are multiple versions of GPG, you may need to consult the relevant man page to find the appropriate key generation command.. If you are on version 2.1.17 or greater ...

GPG keys vs ssh keys vs personal access tokens - Stack Overflow

stackoverflow.com/questions/69485595/gpg-keys-vs-ssh-keys-vs-personal-access-tokens
1. GPG keys are for signing commits, in the sense that they become part of the Git repository. SSH keys only allow you to temporarily access the repo (push, pull). You can use SSH keys for commit signings, but it's not what it's used for and not recommended [0] Personal access tokens and SSH keys are also similar but personal access tokens have ...

drduh/YubiKey-Guide: Guide to using YubiKey for GnuPG and SSH - GitHub

github.com/drduh/YubiKey-Guide
gpg --export-ssh-key <public key id>. Copy the public SSH key to a file - it corresponds to the secret key on YubiKey and can be copied to SSH destination hosts. Create a shortcut that points to gpg-connect-agent /bye and place it in the startup folder shell:startup to make sure the agent starts after reboot.

Telling Git about your signing key - GitHub Docs

docs.github.com/en/authentication/managing-commit-signature-verification/telling-git-about-your-signing-key
To set your primary GPG signing key in Git, paste the text below, substituting in the GPG primary key ID you'd like to use. In this example, the GPG key ID is 3AA5C34371567BD2: git config --global user.signingkey 3AA5C34371567BD2. Alternatively, you may want to use a subkey. In this example, the GPG subkey ID is 4BB6D45482678BE3:
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