It’s assymetric crypto. You’d need to find a matching public key. Or it’s just some useless characters. I suppose that’s impossible, or what we call that… Like take a few billion years to compute. But I’m not an expert on RSA.
I’m pretty sure the cryptographic parameters to generate that public key are included in the private key file. So while you can generate the other file from that file, it’s not only the private part in it and you can’t really change the characters in the private key file. Also not an expert here. I’m fairly certain that it can’t happen the other way round, or you could impersonate someone and do all kinds of MITM attacks… In this case I’ve just tried changing characters and openssh-keygen complains.
It’s assymetric crypto. You’d need to find a matching public key. Or it’s just some useless characters. I suppose that’s impossible, or what we call that… Like take a few billion years to compute. But I’m not an expert on RSA.
Public keys are derived from the private key. The asymmetric part is for communication not generation. Afaik
I’m pretty sure the cryptographic parameters to generate that public key are included in the private key file. So while you can generate the other file from that file, it’s not only the private part in it and you can’t really change the characters in the private key file. Also not an expert here. I’m fairly certain that it can’t happen the other way round, or you could impersonate someone and do all kinds of MITM attacks… In this case I’ve just tried changing characters and openssh-keygen complains.
The surprised man in the middle
Reddit did it in reverse for Tor