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Forum Discussion
Unable to import: Unsupported SSH key
I'm unable to import a RSA key. The message is this:
It's a 2048 bit RSA key, generated a few years ago. It's valid for the Windows ssh client, as well as for Linux openssh.
The 1Passwor...
Yes, my key was also generated by puttygen from the putty package, some years ago, exported to openssh format.
I created a new 4096 bit rsa key with puttygen, this was accepted by 1Password, so I assume puttygen has been updated since then.
However, it seems state of the art are Ed25519 keys, so I will create that instead of RSA as replacement for my old key. According to what I read, these keys are supported since OpenSSH 6.5.
RHEL 7 / CentOS 7 (that's what I run on my oldest machines) comes with OpenSSH 7.4, so Ed25519 is supported. Only in case someone still has legacy machines with RHEL 6 or older, only RSA is supported.
