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I created a profile with the next options

Connection:

  • Hostname: ftp.example.com
  • Connection Type: SFTP
  • Port: 22
  • Username: wwwexample
  • Password: ******
  • Ask for password: no

Authentication:

  • Try private key file authentication: yes
  • Try password key authentication: no

  • Try keyboard interactive authentication: no

  • Private key file: D:\WORK\EXAMPLE\KEYS\wwwexample.ppk

  • Passphrase: ************
  • Ask every time: no

When I try to connect, NppFTP just says connecting and then disconnected. I created the private key with Puttygen, the same key I use for Fillezilla with Pageant (which works).

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2
  • 4
    Speculative idea: Maybe use PuTTYGen to convert that PPK file to the more widely-supported OpenSSH key format?
    – TOOGAM
    Commented Feb 22, 2016 at 16:18
  • You are right, I did what you said and it worked
    – mikl
    Commented Feb 22, 2016 at 16:49

2 Answers 2

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4

Stolen from a comment by @TOOGAM

"Use PuTTYGen to convert that PPK file to the more widely-supported OpenSSH key format."

  1. Open the current SSH private key in PuTTYGen
  2. File menu "Conversion"
  3. Convert to OpenSSH (first option)
  4. Done.
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1
  • annoying that it doesn't use ssh-agent or Pagent, but at least you can do it!
    – kbro
    Commented Jul 29, 2021 at 12:21
0

Use the *.pem file with this format:

-----BEGIN RSA PRIVATE KEY-----
56767567567jhfhfhfghfgghf5464bdf546/56//56565656566fghr656546546546546546546
..
..
-----END RSA PRIVATE KEY-----
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