"invalid privatekey" connecting through SSH tunnel

Connection specification:

MySQL connection via SSH Tunnel to Ubuntu 16.04 server

Describe the problem you’re observing:

Just done a fresh install on my laptop and now cannot connect to remote server using the new SSH key I generated.

Key was generated like so: ssh-keygen -t rsa -b 4096 -C

I can connect to the server in question just fine via ssh user@host in a terminal but with the same host, user and private key reference under the ‘SSH Tunnel’ tab I get:

Can't initialize tunnel
  Cannot establish tunnel
  Cannot establish tunnel
    invalid privatekey: [B@7696c31f
    invalid privatekey: [B@7696c31f

I added the SSHJ extension after reading through similar issues but it’s not helped

Am I missing something?

System information:

• DBeaver 6.0.3.201904211926 org.jkiss.dbeaver.core.product
• DBeaver SSHJ .0.28.201904211926 org.jkiss.dbeaver.net.sshj.feature.feature.group JKISS
• Host OS: Fedora 30
• Open SSL version: OpenSSH_7.9p1, OpenSSL 1.1.1b FIPS 26 Feb 2019
• java -version:

openjdk version "1.8.0_201"
OpenJDK Runtime Environment (build 1.8.0_201-b09)
OpenJDK 64-Bit Server VM (build 25.201-b09, mixed mode)

[EugeneSmoliy]

Run this on your key to convert it to RSA private key. Helped me. ssh-keygen -p -m PEM -f ~/.ssh/id_rsa

[Kameecoding]

private key generated by ssh-keygen starts with

-----BEGIN OPENSSH PRIVATE KEY----- and not -----BEGIN RSA PRIVATE KEY-----

and this is not supported by DBeaver.

To generate supported key add -m PEM to the end of your ssh-keygen command

e.g.

ssh-keygen -t rsa -b 2048 -m PEM