SSH, the secure shell, is often used to access remote Linux systems. 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.

Generating these keys from Linux is easy, and thanks to Ubuntu on Windows, you can follow the same process from Windows 10. But even without Ubuntu, SSH keys can also be generated with the free and open source Windows application, PuTTy

Create New Ssh Key

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To create a new key pair, select the type of key to generate from the bottom of the screen (using SSH-2 RSA with 2048 bit key size is good for most people; another good well-known alternative is ECDSA). Then click Generate, and start moving the mouse within the Window. Putty uses mouse movements to. Apr 12, 2018 SSH-key-based authentication provides a more secure alternative to password-based authentication. In this tutorial we'll learn how to set up SSH key-based authentication on an Ubuntu 16.04 installation. Working with PuTTY's Public Key Format. Open PuTTYgen. Next to Load an existing private key file, click the Load button. Navigate to the private key in your file system and select it. Sep 26, 2019  Generating an SSH key. To generate an SSH key with PuTTYgen, follow these steps: Open the PuTTYgen program. For Type of key to generate, select SSH-2 RSA. Click the Generate button. Move your mouse in the area below the progress bar. When the progress bar is full, PuTTYgen generates your key pair. Type a passphrase in the Key passphrase field. Warning: If you are saving your keys under C:/User/username/.ssh ( the default place), make sure to back up your keys somewhere (eg your password manager). After the most recent Windows 10 Update (version 1607), my.ssh folder was empty. This is where my keys have always been, but Windows decided to delete them when updating.

Ssh Generate Key

Over the following few steps, we’ll guide you through the process of generating SSH keys using both Ubuntu on Windows and PuTTY.

Requirements

All you need is a PC running Windows 10 and either of the following installed:

• The puttygen.exe executable from PuTTY

If you don’t already have Ubuntu on Windows, take a look at our Install Ubuntu on Windows 10 tutorial.