Notepad++ NppFTP plugin fails to connect via SFTP

notepad++ sftp
Pavel Lint picture Pavel Lint · Jan 20, 2012 · Viewed 39.6k times · Source

So, i've been having this problem for a while now.

Notepad++ NppFTP plugin fails to connect to server via SFTP with "[SFTP] Error during authentication: Invalid private key file". But the key file is 100% correct and i'm connecting fine with WinSCP.

Any solutions?

Answer

strocknar picture strocknar · Feb 13, 2012

The solution for me was to use puttygen to export a .ppk version of my private key to OpenSSH as follows:

  1. Open PuttyGen
  2. Menu: Conversion -> Export OpenSSH key
  3. Save your new key (don't forget to make it clear it is openssh)

This was weird seeing as my .ppk was converted from a private key generated by OpenSSH itself.

I think it has to do with the fact that my original key starts with

---- BEGIN SSH2 ENCRYPTED PRIVATE KEY ----

whereas the exported key starts with 

-----BEGIN RSA PRIVATE KEY-----

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