How to set public key for Ubuntu 22.04?

[mahesh]

Hi
I have a VPS is running Ubuntu 22.04

I usually use Puttygen to general the public key then paste to ~/.ssh/authorized_keys, then use the private key to login to the VPS on my Windows via Putty.

But yesterday, I can't make it working on Ubuntu 22.04. Seem this version does not support the old way I did.

Could you please tell me how to do? I do search on Google and still not find the correct way to make it works.

Thanks