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2024-08-07 06:44:52 +00:00
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## Creating and Using SSH Keys
### Understanding SSH Keys
SSH keys provide a secure method for authenticating to remote servers. They consist of a public key and a private key. The public key is shared with the server, while the private key remains on your local machine.
### Generating an SSH Key Pair
To generate a new SSH key pair, open your terminal and run the following command:
```bash
ssh-keygen -t ed25519 -C "your_email@example.com"
```
Replace your_email@example.com with your actual email address.
You will be prompted to enter a passphrase for added security. It's recommended to use a strong passphrase. Store this passphrase as it will be one of our login methods.
The generated keys will be stored in the following files:
Private key: ~/.ssh/id_ed25519
Public key: ~/.ssh/id_ed25519.pub
### Adding Your Public Key to the Server
1. Copy the contents of the public key file:
2. On your server, log in as the user you created.
3. Create the .ssh directory: mkdir -p ~/.ssh
4. Create the authorized_key file:touch ~/.ssh/authorized_keys
5. Set permissions:
```bash
chmod 700 ~/.ssh
chmod 600 ~/.ssh/authorized_keys
```