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Download PuTTYgen for Windows 10 (64/32-bit) PC/laptop.

You can now add the public key to those services you wish to authenticate. It’s common to have many keys with more descriptive filenames, for instance.Ĭongratulations! You have just generated a SSH key pair from Windows 10. By convention, the private key is usually called id_rsa and the public key id_rsa.pub, but this isn’t a requirement.

to export the public key, click Save public key from the main window.

to export the private key, select Export OpenSSH key from the Conversions menu.

Two important fields, Key passphrase and Confirm passphrase, allow you to enter a passphrase to protect the private key.įinally, you will need to export both the private and public keys separately: After this, the raw contents of the public key will be displayed alongside its fingerprint and a timestamp comment. You will be asked to move the mouse and press keys to improve the random number generation at the heart of SSH security. To generate a key pair with the PuTTY key generator, simply run puttygen.exe and click the Generate button in the window that appears.

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With SSH installed, run the SSH key generator by typing the following: ssh-keygen -t rsaĥ5555 1115×491 30.1 KB Key generation with Putty The key generation process is identical to the process on a native Linux or Ubuntu installation.

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Launch Ubuntu on WSL from the start menu and make sure SSH is installed by entering following command at the command prompt: sudo apt install openssh-client If you suspect a key has been compromised, simply generate a new pair for that service and remove the less secure key. If a third-party gains access to a private key without a passphrase they will be able to access all connections and services using the public key.Ī good compromise between convenience and security is to generate a separate key pair for each service or connection you want to use, adding a passphrase only for critical services. For this reason, creating a key pair without a passphrase is more convenient and potentially essential for certain scripts and automation tasks. Not adding a passphrase removes this requirement.

When creating the SSH key pair, as shown in the following steps, you can choose to either lock your private key with a passphrase or use no passphrase at all.Īdding a passphrase requires the same passphrase to be entered whenever the key pair is used.

If you don’t already have Ubuntu on WSL, take a look at our Install Ubuntu on WSL tutorial. The puttygen.exe executable from PuTTY for Windows 7 or 8.1.The OpenSSH client built into Windows 10.RequirementsĪll you need is a PC running Windows and one of the following installed: Over the following few steps, we’ll guide you through the process of generating SSH keys using Ubuntu on WSL, OpenSSH, and PuTTY.

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But even without Ubuntu, SSH keys can also be generated with the free and open source OpenSSH client built into Windows 10 or with PuTTY for Windows 8.1 and earlier.

Generating these keys from Linux is easy, and thanks to Ubuntu on WSL, you can follow the same process from Windows 10. But its authentication mechanism, where a private local key is paired with a public remote key, is used to secure all kinds of online services, from GitHub and Launchpad to Linux running on Microsoft’s Azure cloud. SSH, the secure shell, is often used to access remote Linux systems. Use the Ubuntu command line or PuTTY running on Windows 10 to generate SSH keys for use with SSH authentication and your own remote connections.