Generate online private and public key for ssh, putty, github, bitbucket Save both of keys on your computer (text file, dropbox, evernote etc)!!! The generated keys are RANDOM and CAN'T be restored. You can create keys without creating an account. Jan 30, 2018 SSH connect Google Cloud instance with MobaXterm and PuTTows(使用MobaXterm 和 PuTTY ssh连接谷歌云实例) 1. Download PuTTYGen.exe and generate private and public key. Add your google. Feb 28, 2019 For MobaXterm: Under 'Parameters', click RSA and enter 2048 for the 'Number of bits in a generated key' Click Generate and wiggle the mouse around to generate random binary data; When the key pair has been created, copy the public key to the clipboard; Click Save private key (use passphrase if desired) Step 2: Copy the public key to the. MobaXterm also contains a similar key generator and can be used in place of PuTTYgen if it is already installed. Generating your keys. Now we can generate your key pair. Your key pair consists of two keys, one public and one private. The public key is the one that you will upload to HPG. The private key must be kept secure.
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With a secure shell (SSH) key pair, you can create virtual machines (VMs) in Azure that use SSH keys for authentication, eliminating the need for passwords to sign in. This article shows you how to quickly generate and use an SSH public-private key file pair for Linux VMs. You can complete these steps with the Azure Cloud Shell, a macOS or Linux host, the Windows Subsystem for Linux, and other tools that support OpenSSH.
Note
VMs created using SSH keys are by default configured with passwords disabled, which greatly increases the difficulty of brute-force guessing attacks.
For more background and examples, see Detailed steps to create SSH key pairs.
For additional ways to generate and use SSH keys on a Windows computer, see How to use SSH keys with Windows on Azure.
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Supported SSH key formats
Azure currently supports SSH protocol 2 (SSH-2) RSA public-private key pairs with a minimum length of 2048 bits. Other key formats such as ED25519 and ECDSA are not supported.
Create an SSH key pair
Use the
ssh-keygen
command to generate SSH public and private key files. By default, these files are created in the ~/.ssh directory. You can specify a different location, and an optional password (passphrase) to access the private key file. If an SSH key pair with the same name exists in the given location, those files are overwritten.The following command creates an SSH key pair using RSA encryption and a bit length of 4096:
If you use the Azure CLI to create your VM with the az vm create command, you can optionally generate SSH public and private key files using the
--generate-ssh-keys
option. The key files are stored in the ~/.ssh directory unless specified otherwise with the --ssh-dest-key-path
option. The --generate-ssh-keys
option will not overwrite existing key files, instead returning an error. In the following command, replace VMname and RGname with your own values:Generate Public Key From Private Mobaxterm Search
Provide an SSH public key when deploying a VM
To create a Linux VM that uses SSH keys for authentication, specify your SSH public key when creating the VM using the Azure portal, Azure CLI, Azure Resource Manager templates, or other methods:
If you're not familiar with the format of an SSH public key, you can display your public key with the following
cat
command, replacing ~/.ssh/id_rsa.pub
with the path and filename of your own public key file if needed:A typical public key value looks like this example:
If you copy and paste the contents of the public key file to use in the Azure portal or a Resource Manager template, make sure you don't copy any trailing whitespace. To copy a public key in macOS, you can pipe the public key file to
pbcopy
. Similarly in Linux, you can pipe the public key file to programs such as xclip
.![From From](/uploads/1/2/6/0/126058479/508190923.png)
The public key that you place on your Linux VM in Azure is by default stored in ~/.ssh/id_rsa.pub, unless you specified a different location when you created the key pair. To use the Azure CLI 2.0 to create your VM with an existing public key, specify the value and optionally the location of this public key using the az vm create command with the
--ssh-key-values
option. In the following command, replace VMname, RGname, and keyFile with your own values:If you want to use multiple SSH keys with your VM, you can enter them in a space-separated list, like this
--ssh-key-values sshkey-desktop.pub sshkey-laptop.pub
.SSH into your VM
With the public key deployed on your Azure VM, and the private key on your local system, SSH into your VM using the IP address or DNS name of your VM. In the following command, replace azureuser and myvm.westus.cloudapp.azure.com with the administrator user name and the fully qualified domain name (or IP address):
If you specified a passphrase when you created your key pair, enter that passphrase when prompted during the login process. The VM is added to your ~/.ssh/known_hosts file, and you won't be asked to connect again until either the public key on your Azure VM changes or the server name is removed from ~/.ssh/known_hosts.
If the VM is using the just-in-time access policy, you need to request access before you can connect to the VM. For more information about the just-in-time policy, see Manage virtual machine access using the just in time policy.
Next steps
- For more information on working with SSH key pairs, see Detailed steps to create and manage SSH key pairs.
- If you have difficulties with SSH connections to Azure VMs, see Troubleshoot SSH connections to an Azure Linux VM.
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Parent page: SSH
PuTTYgen pre key generation (Click for larger image)
PuTTYgen post key generation (Click for larger image)
If using PuTTY or MobaXTerm the process of generating a key is nearly the same with only minor differences. In MobaXTerm go to the Tools->MobaKeyGen (SSH key generator), and with PuTTY run the PuTTYGen executable both of these methods will result in displaying a very similar window which can be used to generate or load an existing key.
- Click the 'Generate' button. You will then be asked to move your mouse around to generate random data to be used to create the key.
- Enter a passphrase for your key.
- Click the 'Save private key' button and choose a meaningful file name (e.g. compute_canada.ppk).
- Add the public key from the text box under 'Public key for pasting into OpenSSH authorized_keys', by copying and pasting it, as a single line to the end of the
/home/USERNAME/.ssh/authorized_keys
on the server you wish to connect to as the userUSERNAME
with WinSCP or an editor launched from that server such as vim or nano. - Ensure directory, file permissions are correct and have the correct owner as described in steps 2 and 3 of these instructions.
- Test the new key by connecting to the server as
USERNAME
using ssh (see connecting with PuTTY using a key pair or connecting with MobaXTerm using a key pair).
Key generation and usage is demonstrated in this youtube video with PuTTY: Easily setup PuTTY SSH keys for passwordless logins using Pageant.
When a key is created on OpenStack you obtain a key with a '.pem' extension. This key can be converted to a format used by PuTTY by clicking the 'Load' button in PuTTYGen. Then select the 'All Files (*.*)' filter and select your '.pem' file downloaded from OpenStack and click 'Open'. You should also add a 'Key passphrase' at this point to use when accessing your private key and then click 'Save private key'.
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This private key can be used with PuTTY to connect to a VM that OpenStack injects with the matching public key under the 'Key Pairs' tab under the 'Access & Security' tab when launching a new VM. You can read more about connecting using PuTTY or MobaXterm.
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