Only if the seed file was was generated by a secure kernel during a clean shutdown and kept secret during that whole time. There's a lot to go wrong there, espe

Only if the seed file was was generated by a secure kernel during a clean shutdown and kept secret during that whole time. There's a lot to go wrong there, especially if you're an embedded system running on flash. I also seem to recall host keys being generated on first boot. Perhaps some installers are smart enough to prime that seed file.