this post was submitted on 17 Sep 2026
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[–] jaybone@lemmy.zip 18 points 4 days ago (1 children)

Now reverse engineer a matching public key.

[–] TwilightKiddy@scribe.disroot.org 5 points 3 days ago (1 children)

What do you mean "reverse engineer"? From man ssh-keygen:

       -y      This option will read a private OpenSSH format file and print an OpenSSH public key to stdout.
[–] jaybone@lemmy.zip 2 points 3 days ago (1 children)

Post the output when you run that on the key that was posted.

[–] TwilightKiddy@scribe.disroot.org 3 points 3 days ago* (last edited 3 days ago)

That's not a valid key. OpenSSH keys are not arbitrary bytes, they contain at least the type of the certificate used and a hostname.

The fact that this is not a valid key does not mean you need to reverse engineer public keys. By design you can just get a public key with a private one.