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For fedora 37, centos 9 stream and below:
- sshd version is earlier than version 9.
- 'ssh_keys' group is present and owns the private keys.
- private keys have permission 0o640.
For fedora 38, centos 10 stream and above:
- ssh version is atleast version 9.
- 'ssh_keys' group is absent. 'root' group owns the keys.
- private keys have permission 0o600, same as upstream.
Public keys in all cases have permission 0o644.
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