# Generate SSH Key

Here are step-by-step instructions to generate an SSH key on both **Windows** and **Mac** systems:

### For Windows (Windows 10/11):

1. **Ensure OpenSSH Client is Installed**
   - Open **Settings** > **Apps > Apps & Features** > **Optional Features**.
   - Check if **OpenSSH Client** is listed.
   - If not, click **Add a feature**, find **OpenSSH Client**, and install it.
   - Restart your computer if needed.

2. **Open Command Prompt or PowerShell**
   - Press `Windows + R`, type `cmd` or `powershell`, and press Enter.

3. **Generate SSH Key**
   - Type the command:
     ```
     ssh-keygen
     ```
   - Press Enter to accept the default save location (`C:\Users\<username>\.ssh\id_rsa`).

4. **Set a Passphrase (Optional)**
   - When prompted, enter a passphrase for extra security, or just press Enter twice to skip.

5. **Complete**
   - The keys are generated, usually two files: `id_rsa` (private key) and `id_rsa.pub` (public key) under `.ssh` folder in your user directory.

### For Mac (macOS):

1. **Open Terminal**
   - Find Terminal via Spotlight Search or in **Applications > Utilities**.

2. **Generate SSH Key**
   - Run the command, replacing your email with your own:
     ```
     ssh-keygen -t ed25519 -C "your_email@example.com"
     ```
   - If your macOS or server doesn't support Ed25519, use:
     ```
     ssh-keygen -t rsa -b 4096 -C "your_email@example.com"
     ```

3. **Save Key Location**
   - Press Enter to accept the default file location (`/Users/you/.ssh/id_ed25519` or `/Users/you/.ssh/id_rsa`).

4. **Set a Passphrase (Optional)**
   - Enter a secure passphrase or press Enter to leave it blank.

5. **Add SSH Key to ssh-agent**
   - Start the ssh-agent:
     ```
     eval "$(ssh-agent -s)"
     ```
   - Add your private key:
     ```
     ssh-add -K ~/.ssh/id_ed25519
     ```
   - If using RSA:
     ```
     ssh-add -K ~/.ssh/id_rsa
     ```

In both OS, your generated SSH public key is the one you copy and add to services like GitHub, servers, etc. The private key should remain secure and never shared.