> The ssh library in SoftSqueeze only accepts private key files in OpenSSH
> format. I believe that OpenSSH includes a utility to convert between the
> different private key file formats. If possible could you try converting
> the private key file into OpenSSH format and trying again.

I tried using ssh-keygen to convert the SSH key to an OpenSSH key. Unfortunately, all I get is this error:

unsupported cipher 3des-cbc
decode blob failed.

It looks like ssh-keygen needs an unencrypted private key file. I can't figure out how to create an unencrypted copy of my private key.