Chrome Os Generate Ssh Key

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On Windows, you can create SSH keys in many ways. This document explains how to use two SSH applications, PuTTY and Git Bash.

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Joyent recommends RSA keys because the node-manta CLI programs work with RSA keys both locally and with the ssh agent. DSA keys will work only if the private key is on the same system as the CLI, and not password-protected.

PuTTY

PuTTY is an SSH client for Windows. You can use PuTTY to generate SSH keys. PuTTY is a free open-source terminal emulator that functions much like the Terminal application in macOS in a Windows environment. This section shows you how to manually generate and upload an SSH key when working with PuTTY in the Windows environment.

About PuTTY

PuTTY is an SSH client for Windows that you will use to generate your SSH keys. You can download PuTTY from www.chiark.greenend.org.uk.

When you install the PuTTY client, you also install the PuTTYgen utility. PuTTYgen is what you will use to generate your SSH key for a Windows VM.

This page gives you basic information about using PuTTY and PuTTYgen to log in to your provisioned machine. For more information on PuTTY, see the PuTTY documentation

Generating an SSH key

To generate an SSH key with PuTTYgen, follow these steps:

  1. Open the PuTTYgen program.
  2. For Type of key to generate, select SSH-2 RSA.
  3. Click the Generate button.
  4. Move your mouse in the area below the progress bar. When the progress bar is full, PuTTYgen generates your key pair.
  5. Type a passphrase in the Key passphrase field. Type the same passphrase in the Confirm passphrase field. You can use a key without a passphrase, but this is not recommended.
  6. Click the Save private key button to save the private key. You must save the private key. You will need it to connect to your machine.
  7. Right-click in the text field labeled Public key for pasting into OpenSSH authorized_keys file and choose Select All.
  8. Right-click again in the same text field and choose Copy.

Importing your SSH key

Now you must import the copied SSH key to the portal.

  1. After you copy the SSH key to the clipboard, return to your account page.
  2. Choose to Import Public Key and paste your SSH key into the Public Key field.
  3. In the Key Name field, provide a name for the key. Note: although providing a key name is optional, it is a best practice for ease of managing multiple SSH keys.
  4. Add the key. It will now appear in your table of keys under SSH.

PuTTY and OpenSSH use different formats of public SSH keys. If the text you pasted in the SSH Key starts with —— BEGIN SSH2 PUBLIC KEY, it is in the wrong format. Be sure to follow the instructions carefully. Your key should start with ssh-rsa AAAA….

Once you upload your SSH key to the portal, you can connect to your virtual machine from Windows through a PuTTY session.

Git Bash

The Git installation package comes with SSH. Using Git Bash, which is the Git command line tool, you can generate SSH key pairs. Git Bash has an SSH client that enables you to connect to and interact with Triton containers on Windows.

To install Git:

  1. (Download and initiate the Git installer](https://git-scm.com/download/win).
  2. When prompted, accept the default components by clicking Next.
  3. Choose the default text editor. If you have Notepad++ installed, select Notepad++ and click Next.
  4. Select to Use Git from the Windows Command Prompt and click Next.
  5. Select to Use OpenSSL library and click Next.
  6. Select to Checkout Windows-style, commit Unix-style line endings and click Next.
  7. Select to Use MinTTY (The default terminal of mYSYS2) and click Next.
  8. Accept the default extra option configuration by clicking Install.

When the installation completes, you may need to restart Windows.

Launching GitBash

To open Git Bash, we recommend launching the application from the Windows command prompt:

  1. In Windows, press Start+R to launch the Run dialog.
  2. Type C:Program FilesGitbinbash.exe and press Enter.

Generating SSH keys

Chrome os generate ssh key generator

First, create the SSH directory and then generate the SSH key pair.

One assumption is that the Windows profile you are using is set up with administrative privileges. Given this, you will be creating the SSH directory at the root of your profile, for example:

  1. At the Git Bash command line, change into your root directory and type.
  1. Change into the .ssh directory C:Usersjoetest.ssh

  2. To create the keys, type:
  1. When prompted for a password, type apassword to complete the process. When finished, the output looks similar to:

Uploading an SSH key

To upload the public SSH key to your Triton account:

  1. Open Triton Service portal, select Account to open the Account Summary page.
  2. From the SSH section, select Import Public Key.
  3. Enter a Key Name. Although naming a key is optional, labels are a best practice for managing multiple SSH keys.
  4. Add your public SSH key.

Generate Ssh Key Putty

When Triton finishes the adding or uploading process, the public SSH key appears in the list of SSH keys.

What are my next steps?

  • Adding SSH keys to agent.
  • Set up the Triton CLI and CloudAPI on Windows.
  • Set up the Triton CLI and CloudAPI.
  • Create an instance in the Triton Service Portal.
  • Set up the triton-docker command line tool.
  • Visit PuTTYgen to learn more about the PuTTYgen and to seethe complete installation and usage guide.

For this exercise the client system is a Chromebook, and the server system is an Ubuntu VM running on Google Compute Engine.

Generate Ssh Key Ubuntu

The SSH client of choice on Chrome OS devices is Secure Shell. Per its own documentation, it is possible to use public key-based authentication with the Secure Shell client. However, Secure Shell cannot generate its own keys. My goal here is to be able to SSH into a Google Compute Engine VM running Ubuntu Linux, so I generated the keypair on the target Linux VM using the browser-based SSH client offered by https://console.cloud.google.com/, and then imported them into Secure Shell on my Chromebook. This is appealing because it avoids the need to configure passwords for SSH altogether.

Security note: Generating the keypair on the target machine into which possession of that keypair authorizes access is reasonable. If an attacker already has a foothold in that system, you already lose. However, once that keypair is imported into Secure Shell on one’s client device, it can be convenient to use that key for access to other systems. Consider how much you trust the VM image where ssh-keygen executes before deciding whether to use the same keypair to authorize access to any other systems. Also consider the note about HTML5 filesystems being a relatively young technology in the above link to the Secure Shell documentation about SSH keys. A topic for another day is how to integrate with a physical hardware token like a Yubikey, so that the private SSH key is never exposed to any client device software.

Generate ssh key putty

This creates files gce-instance-ssh and gce-instance-ssh.pub. Both of these files need to be copied onto the Chromebook for importing into Secure Shell. I decided to do this using cat gce-instance-ssh and cat gce-instance-ssh.pub and then copy-pasting the contents of each. The destination was a Chrome extension that can create and edit plain text files. Secure Shell requires that both gce-instance-ssh and gce-instance-ssh.pub be available to import a keypair. I shift-clicked when selecting the files for the Import (to the right of the Identity: field in the Secure Shell connection dialog) dialog box. When selecting only the private key file, there seems to be little or no UI feedback that anything has happened at all.

Generate Ssh Key Linux

If successful, the drop-down next to Identity: will have a new entry, whose name appears to be the basename of the imported key files. In this case, gce-instance-ssh.