Hi all!

I've managed to set up an S3 bucket and an SFTP Server. Upon adding users to the server, I am prompted to enter an SSH public key. I have used PuTTY Key Generator on my laptop to generate the keys (both private and public). However, when i try to paste the SSH public key, I receive the message 'Failed to create user (Unsupported or invalid SSH public key format)'. Can anyone please advise what I could be doing wrong? TIA

2 Answers

Hello, could you confirm that the key entered aligns with one of our supported algorithms?

For ED25519:

  • ssh-ed25519

For RSA:

  • rsa-sha2-256
  • rsa-sha2-512


  • ecdsa-sha2-nistp256
  • ecdsa-sha2-nistp384
  • ecdsa-sha2-nistp521

If it does, and you're still experiencing issues, could you confirm that you're using PuTTYgen on Windows?

answered a month ago

Thank you, i managed to do it! Thanks so much!

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answered 25 days ago

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