Creating an SSH Key Pair Using PuTTY (2024)

PuTTY is a free and open-source terminal emulator, serial console and network file transfer application. It supports several network protocols, including SCP, SSH, Telnet, rlogin, and raw socket connection. It can also connect to a serial port. The name "PuTTY" has no definitive meaning.

Download PuTTY

PuTTY User Manual

Using the PuTTYgen key generator

  • Type of key: RSA key for use with the SSH-2 protocol.
  • Strength of the key: 2048 bits
  • Passphrase: The passphrase you create will be needed to log onto the cluster.
  • Saving your key: Save your generated key to a location on your computer that will be easy for you to access in the future.

Condensed Directions

Generating SSH key pairs locally

  1. Download PuTTYgen (availablehere) and run the executable.
  2. Click on theGeneratebutton and follow on-screen instructions.
  3. Create and confirm aKey passphrase.
  4. Save public and private keys. Saving the public key with the extension.pubcan help to distinguish between the two keys.
  5. Upload thepublickey file

Logging in with SSH

  1. Download PuTTY (availablehere) and run the executable.
  2. In the Session tab, enter theHost Nameand select SSH as the connection type.
  3. In the Auth tab (located in SSH), browse for and select your private key.
  4. Click Open and enter your login credentials.
Creating an SSH Key Pair Using PuTTY (2024)

FAQs

Creating an SSH Key Pair Using PuTTY? ›

If PuTTY is installed on Windows™, start PutTTYgen, load your private key (ppk file), and select the conversions >> Export OpenSSH key menu item. It will ask you where you want to save the file. If PuTTY is installed on Linux™, execute puttygen input_key.

How do I generate my own SSH key pair? ›

To create a key pair on Microsoft Windows operating systems:
  1. Download PuTTy Key Generator PuTTygen.exe file and run it.
  2. In the Key menu, select SSH-2 RSA Key.
  3. In Parameters, select the RSA option.
  4. In Number of bits in generated key field, enter at least 2048, ideally 4096.
  5. In Actions, select Generate.
May 24, 2024

How to generate SSH key pair terminal? ›

Generating SSH key pairs locally
  1. In a terminal, type the command ssh-keygen -t rsa, and press enter.
  2. When asked to enter file in which to save the key, press enter without typing in a name. ...
  3. Enter a password for the key pair, and press enter. ...
  4. Upload the public key file (the one ending in .

How to create SSH session in PuTTY? ›

Creating a PuTTY profile and SSH tunnel
  1. Open PuTTY. ...
  2. Click the Session node under Category at left. ...
  3. Enter your Workbench host name in Host Name (or IP address). ...
  4. Enter the Workbench port number in Port. ...
  5. Select SSH for the Connection type.
  6. Enter a session name in Saved Sessions.

How do I add a key to PuTTY SSH agent? ›

If PuTTY is installed on Windows™, start PutTTYgen, load your private key (ppk file), and select the conversions >> Export OpenSSH key menu item. It will ask you where you want to save the file. If PuTTY is installed on Linux™, execute puttygen input_key.

How to generate SSH key from PuTTY? ›

To generate a new key, open PuTTYgen and click the Generate button. In the Key Generator window, check that the type of key to generate at the bottom is set to RSA. This will create an SSH-2 RSA key. The older SSH-1 was the standard's first version but is now considered obsolete.

How do I generate a new SSH key for my host? ›

To generate an SSH key on your Linux server, run the command ssh-keygen . The command can take flags if you would like to customize the type of key that is generated and the signing algorithms that are used to generate the key. This example generates a standard 2048-bit RSA key without a passphrase.

How to generate SSH key automatically? ›

The simplest way to generate a key pair is to run ssh-keygen without arguments. In this case, it will prompt for the file in which to store keys. Here's an example: klar (11:39) ~>ssh-keygen Generating public/private rsa key pair.

How to generate RSA key? ›

Generate RSA Keys
  1. Open a shell using Putty or another utility.
  2. Use commands to generate an RSA key file. Type the following command to generate RSA keys: ssh-keygen -t rsa. ...
  3. Navigate to the. rsakey. folder that you created in step 2b. ...
  4. Locate the public key beginning with. ssh. and copy the key.

How to generate SSH key and copy? ›

Copy the ssh key into remote servers
  1. Open a terminal on your local computer.
  2. Generate an SSH key pair if you haven't already done so by running the command: ssh-keygen . ...
  3. Once the key pair is generated, run the command: ssh-copy-id user@remote_server . ...
  4. You'll be prompted to enter the password for the remote user account.
Apr 8, 2023

How to connect with PuTTY ssh key? ›

The example used is for putty version 0.79.
  1. Launch PuTTY but do not connect to a remote system.
  2. In the Category window, browse to Connection>Data.
  3. Set the Auto-login username to the remote SSH username. ...
  4. Browse to Connection>SSH>Auth>Credentials. ...
  5. Test key-based authentication. ...
  6. Select Open to test the session.

How to use PuTTY SSH command line? ›

In the command line window, type in the SSH username at the login as prompt and then press enter on your keyboard. In the command line window, type in the SSH password at the login as prompt and then press enter on your keyboard. You should now be logged into your VPS server using SSH access.

Where are PuTTY ssh keys stored? ›

Like other SSH implementations, PuTTY records the host keys of SSH servers it encounters. They are stored in the Windows registry under the key \HKEY_CURRENT_USER\Software\SimonTatham\PuTTY\SshHostKeys .

How to create a SSH key? ›

For Windows 10 & 11
  1. Press the Windows key or open up the Start Menu. Type “cmd”.
  2. Under “Best Match”, click “Command Prompt”.
  3. In the command prompt, use the ssh-keygen command: ...
  4. The system will now generate the key pair and display the key fingerprint and a randomart image. ...
  5. Open your file explorer.

How do I add a key to SSH agent? ›

Adding SSH Key to SSH Agent
  1. Check if SSH Agent is running. eval "$(ssh-agent -s)"
  2. Add the Keys to SSH Agent. ssh-add ~/.ssh/nameofkey.
  3. Verify Keys Added to SSH Agent. ssh-add -l.
  4. Copy Key to Remote Server. ssh-copy-id [email protected].
  5. Copy Server Key to Host. ssh-copy-id [email protected].
Mar 22, 2022

How do I import a key pair into PuTTY? ›

Click "Conversions" from the PuTTY Key Generator menu and select "Import key". Navigate to the OpenSSH private key and click "Open". Under "Actions" / "Save the generated key", select "Save private key". Choose an optional passphrase to protect the private key.

How do I find my SSH key pair? ›

Checking for existing SSH keys
  1. Open Terminal .
  2. Enter ls -al ~/.ssh to see if existing SSH keys are present. $ ls -al ~/.ssh # Lists the files in your .ssh directory, if they exist.
  3. Check the directory listing to see if you already have a public SSH key. ...
  4. Either generate a new SSH key or upload an existing key.

How do I generate a public SSH key for a user? ›

To generate an SSH private/public key pair for your use, you can use the ssh-keygen command-line utility. You can run the ssh-keygen command from the command line to generate an SSH private/public key pair. If you are using Windows, by default you may not have access to the ssh-keygen command.

How to generate a public and private key pair? ›

Procedure
  1. Once installed, run the OpenSSL command prompt. Type openssl to start the application.
  2. To generate a new RSA private key, type: genrsa -out {path_to_pem_file} 2048. ...
  3. To generate a public key, type: rsa -pubout -in {path_private_pem} -out (path_public_pem)

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