Putty Generate Public Key From Private

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Type in the passphrase and confirm it. The passphrase is used to protect your key. You will be asked for it when you connect via SSH. Click 'Save private key' to save your private key. Click 'Save public key' to save your public key. For more information on how to load the key and connect via SSH using PuTTY, please check this tutorial. Generate SSH Key using PuTTYgen. With PuTTYgen you can generate SSH key pairs (public and private key) that are used by PuTTY to connect to your server from a Windows client. The private key will be stored on your local machine, while the public key has to be uploaded in your dashboard. When connecting with PuTTY.

With PuTTYgen you can generate SSH key pairs (public and private key) that are used by PuTTY to connect to your server from a Windows client. The private key will be stored on your local machine, while the public key has to be uploaded in your dashboard. When connecting with PuTTY, your session loaded with your private key will generate a signature which will be authenticated by the server using the matching public key.

Putty Generate Public Private Key Pair

Step 1: Download PuTTYgen

Simply download and save the PuTTYgen executable (.exe) file from this link. Since it’s a standalone application, you will not need to perform any installation steps for it.

Step 2: Generate SSH Key

Pgp Key

  1. Open PuTTYgen.
  2. Select these parameters:
    • Jelastic requires an SSH-2 RSA (recommended) or SSH-2 DSA key
    • The number of bits can be either 2048 or 4096 (recommended). This defines the strength of the key and its resistance to brute-force attacks.
  3. Click the Generate button.
  4. Move your mouse randomly within the empty area to generate your key until the progress bar fills up.
  5. In the next screen you can see the following:

    6. Your Public Key

    You can copy and paste this key directly to your Jelastic dashboard. To see how to add your public key to Jelastic, please see: How to connect to Jelastic using PuTTY

    Your Key Fingerprint

    In this field you should enter something to help you remember what you will use this key for. For example if you are going to use this key pair to connect to your Jelastic environments, you could enter ‘Jelastic’ here.

    Key passphrase

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    Here you can set a password you can use to encrypt your Private Key. While this is not mandatory, it is strongly recommended to ensure that nobody from your workstation will be able to connect to your server without knowing the passphrase.

    If you are using SSH for scripts, you will need to leave the Key passphrase field empty.

Putty Key Location

Step 3: Save your SSH key

You can either copy and paste your public key into the Jelastic dashboard, or you can click the ‘Save public key’ button to save the file on your computer. You can open it with a simple text editor, like Notepad.

Putty Generate Public Key From Private Bank

Putty generate key

You should save the private key on your computer as a .ppk (PuTTY Private Key) file.

Step 4: Load a previous SSH key

If you would like to change the comment or passphrase for an existing SSH key, or you would simply like to view the fingerprint or maybe save another copy of the public key, you can always load your SSH key in PuTTYgen.

  1. Open PuTTYgen.
  2. Click Load
  3. Select your SSH Private Key file.
  4. Enter your passphrase if prompted and click OK.
  5. You will see the Public key, fingerprint and related information in the PuTTY Key Generator window.

Important: If you make any changes, don’t forget to save your Private key!

The PuTTYgen program is part of PuTTY, an open source networking client for the Windows platform.

To generate an SSH key pair on Windows using the PuTTYgen program:
What is public key

Putty Generate Public Key From Private School

  1. Download and install PuTTY or PuTTYgen.

    To download PuTTY or PuTTYgen, go to http://www.putty.org/ and click the You can download PuTTY here link.

  2. Run the PuTTYgen program.
  3. Set the Type of key to generate option to SSH-2 RSA.
  4. In the Number of bits in a generated key box, enter 2048.
  5. Click Generate to generate a public/private key pair.

    As the key is being generated, move the mouse around the blank area as directed.

  6. (Optional) Enter a passphrase for the private key in the Key passphrase box and reenter it in the Confirm passphrase box.

    Note:

    While a passphrase is not required, you should specify one as a security measure to protect the private key from unauthorized use. When you specify a passphrase, a user must enter the passphrase every time the private key is used.

  7. Click Save private key to save the private key to a file. To adhere to file-naming conventions, you should give the private key file an extension of .ppk (PuTTY private key).

    Note:

    The .ppk file extension indicates that the private key is in PuTTY's proprietary format. You must use a key of this format when using PuTTY as your SSH client. It cannot be used with other SSH client tools. Refer to the PuTTY documentation to convert a private key in this format to a different format.
  8. Select all of the characters in the Public key for pasting into OpenSSH authorized_keys file box.

    Make sure you select all the characters, not just the ones you can see in the narrow window. If a scroll bar is next to the characters, you aren't seeing all the characters.

  9. Right-click somewhere in the selected text and select Copy from the menu.
  10. Open a text editor and paste the characters, just as you copied them. Start at the first character in the text editor, and do not insert any line breaks.
  11. Save the text file in the same folder where you saved the private key, using the .pub extension to indicate that the file contains a public key.
  12. If you or others are going to use an SSH client that requires the OpenSSH format for private keys (such as the ssh utility on Linux), export the private key:
    1. On the Conversions menu, choose Export OpenSSH key.
    2. Save the private key in OpenSSH format in the same folder where you saved the private key in .ppk format, using an extension such as .openssh to indicate the file's content.