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Unable to add server using putty private key key pair. How to convert PPK file OpenSSH format

Issue with Adding Servers Using Putty Generated Private Key Pair (PPK)

Note: The putty key is currently not supported in Ezeelogin. You have to convert it to OpenSSH format.

Synopsis: This article describes how to convert Putty-generated private key pairs (.ppk) to OpenSSH format for compatibility with Ezeelogin and other systems.

To convert to OpenSSH format, you can use PuttyGen.

Step 1: Download and Install PuttyGen

Step 2: Open PuttyGen and Load Your .ppk File

  • Launch PuTTYgen.
  • Click on "Load" under Actions.
  • Navigate to your .ppk file and select it.


  • Click "Open" to load the file.


Step 3:Export the Key in OpenSSH Format.

  • Once the key is loaded in PuTTYgen.
  • Go to Conversions in the top menu.
  • Choose Export > OpenSSH Key.


Step 4: Confirm Export Without Passphrase

  • PuTTYgen may warn you about saving the key without a passphrase. Click "Yes" to proceed.



Step 5: Name and Save the Key

  • Name the file as desired and add the .pem extension (e.g., mykey.em).
  • Choose the location where you want to save the file.


Step 6: Convert Using Command Line (Unix/Linux)

  • If you prefer using the command line on Unix/Linux:
    • Install PuTTY tools if not already installed:
      • RPM-based (CentOS):

:~# sudo yum install putty

      • Dpkg-based (Ubuntu/Debian): 

:~# sudo apt-get install putty-tools   

    • Convert the .ppk file to .pem format using puttygen.

:~# sudo puttygen ppkkey.ppk -O private-openssh -o pemkey.pem

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