Table of Contents

1. Generate An Ssl Key In Putty For Mac
2. Generate An Ssl Key In Putty 2017
3. Openssl Generate Key
4. Ssl Key File

To generate a key with PuTTY, you should: Download and start the puttygen.exe generator. In the 'Parameters' section choose SSH2 DSA and press Generate. Move your mouse randomly in the small screen in order to generate the key pairs. Enter a key comment, which will identify the key (useful when. Jul 19, 2013  PuTTY Key Generator (a.k.a. PuTTYgen) While PuTTY is a client program for SSH (in addition to Telnet and Rlogin), it is not a port of or otherwise based on OpenSSH. Consequently, PuTTY does not have native support for reading OpenSSH's SSH-2 private key files. However, PuTTY does have a companion named PuTTYgen. Aug 20, 2014  How to Create an SSH Putty Key from cPanel Posted on August 20, 2014 by Bhagwad Park. 3 comments. Tutorials Accessing a remote host via SSH can be done in two ways – either with a username/password combination or by making use of an SSH key. PuTTYgen is a key generator tool for creating pairs of public and private SSH keys. It is one of the components of the open-source networking client PuTTY. Although originally written for Microsoft Windows operating system, it is now officially available for.

Introduction

SSH can handle authentication using a traditional username and password combination or by using a public and private key pair. The SSH key pair establishes trust between the client and server, thereby removing the need for a password during authentication. While not required, the SSH private key can be encrypted with a passphrase for added security.

The PuTTY SSH client for Microsoft Windows does not share the same key format as the OpenSSH client. Therefore, it is necessary to create a new SSH public and private key using the PuTTYgen tool or convert an existing OpenSSH private key.

Requirements

• PuTTY SSH client for Microsoft Windows
• Remote server accessible over OpenSSH

Install PuTTY and PuTTYgen

Both PuTTY and PuTTYgen are required to convert OpenSSH keys and to connect to the server over SSH. These two tools can be downloaded individually or, preferably, as a Windows installer from the PuTTY Download Page.

Once the PuTTY Windows installer is downloaded, double-click the executable in the Download folder and follow the installation wizard. The default settings are suitable for most installations. Both PuTTY and PuTTYgen should now be accessible from the Windows Programs list.

Use Existing Public and Private Keys

If you have an existing OpenSSH public and private key, copy the id_rsa key to your Windows desktop. This can be done by copying and pasting the contents of the file or using an SCP client such as PSCP which is supplied with the PuTTY install or FileZilla.

Next launch PuTTYgen from the Windows Programs list.

1. Click Conversions from the PuTTY Key Generator menu and select Import key.
2. Navigate to the OpenSSH private key and click Open.
3. Under Actions / Save the generated key, select Save private key.
4. Choose an optional passphrase to protect the private key.
5. Save the private key to the desktop as id_rsa.ppk.

If the public key is already appended to the authorized_keys file on the remote SSH server, then proceed to Connect to Server with Private Key.

Otherwise, proceed to Copy Public Key to Server.

Generate An Ssl Key In Putty For Mac

Create New Public and Private Keys

Launch PuTTYgen from the Windows Programs list and proceed with the following steps.

1. Under Parameters, increase the Number of bits in a generated key: to a minimum value of 2048.
2. Under Actions / Generate a public/private key pair, click Generate.
3. You will be instructed to move the mouse cursor around within the PuTTY Key Generator window as a randomizer to generate the private key.
4. Once the key information appears, click Save private key under Actions / Save the generated key.
5. Save the private key to the desktop as id_rsa.ppk.
6. The box under Key / Public key for pasting into OpenSSH authorized_keys file: contains the public key.

Generate An Ssl Key In Putty 2017

Copy Public Key to Server

The OpenSSH public key is located in the box under Key / Public key for pasting info OpenSSH authorized_keys file:. The public key begins with ssh-rsa followed by a string of characters.

1. Highlight entire public key within the PuTTY Key Generator and copy the text.
2. Launch PuTTY and log into the remote server with your existing user credentials.

3. Use your preferred text editor to create and/or open the authorized_keys file:

4. Paste the public key into the authorized_keys file.

5. Save the file and close the text editor.

6. Adjust the permissions of the authorized_keys file so that the file does not allow group writable permissions.

7. Logout of the remote server.

Openssl Generate Key

Connect to Server with Private Key

Now it is time to test SSH key authentication. The PuTTYgen tool can be closed and PuTTY launched again.

1. Enter the remote server Host Name or IP address under Session.
2. Navigate to Connection > SSH > Auth.
3. Click Browse... under Authentication parameters / Private key file for authentication.
4. Locate the id_rsa.ppk private key and click Open.
5. Finally, click Open again to log into the remote server with key pair authentication.

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

Ssl Key File

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.