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I have a PuTTY .ppk key. How do I use it with ssh/OpenSSH on Linux?

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up vote 9 down vote accepted

Use PuTTYgen to convert it to the apropriate format.

  • If you need the private key, use PuTTYgen's Conversions → Export OpenSSH key menu item on Windows, or run the following command on Linux:

    puttygen MyKey.ppk -O private-openssh -o MyKey.key
  • If you only need the public half, copy&paste it from PuTTYgen's "Public key for pasting" box. On Linux, use a similar command as above, only replacing private-openssh with public-openssh.


(On Linux, PuTTYgen is usually available in the package putty or putty-tools.)

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