Problem to convert ssh key

ninjanoir78 · 01-08-2024, 03:09 PM

Hi,

I try to convert pub key to ppk and usualy I don't have problem with that but since a week, I got that error, idea? thanks

~/.ssh$ puttygen id_ed25519 -o id_ed25519.ppk
puttygen: error loading `id_ed25519': unrecognised cipher name

rkelsen · 01-08-2024, 03:50 PM

See here: https://superuser.com/questions/1484...and-ssh-keygen

Thhe crux of it:
"Latest versions of OpenSSH ssh-keygen (7.8 and newer) generate keys in a new format (BEGIN OPENSSH PRIVATE KEY).
...
Use -m PEM flag, to make new ssh-keygen generate the keys in the old format (like BEGIN RSA PRIVATE KEY):

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

FWIW - you don't have to use Putty any more because Windows comes with OpenSSH. You can open a cmd window and type: ssh user@192.168.x.x

ninjanoir78 · 01-08-2024, 04:07 PM

Quote:

Originally Posted by rkelsen

See here: https://superuser.com/questions/1484...and-ssh-keygen

...
Use -m PEM flag, to make new ssh-keygen generate the keys in the old format (like BEGIN RSA PRIVATE KEY):

ssh-keygen -m PEM -t rsa -b 2048"[/i]

so in my case:

ssh-keygen -m PEM -t ed25519 -b ???