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No, signing is done with asymmetric keys. Someone sign with their private key so you can verify it with their public key, basically. Symmetric keys are used to
by _notreallyme_ 5y ago
No, signing is done with asymmetric keys. Someone sign with their private key so you can verify it with their public key, basically.
Symmetric keys are used to encrypt the code for updates, generally to prevent unintentional leak of secrets or just to prevent reverse engineering.
I'm not in the jailbreaking space, but I guess that what it means here is that some people may find flaws in the code and leverage them to potentially bypass the signature verification, although this might prove very difficult to do.
It might also help emulating the PS5 behavior which in turns could lead to some modding/cheating for some games. Who knows ?
- qwerty456127 5y agoI hope they also get the asymmetric keys once. I'll buy the thing then. I'm not buying hardware I can't patch to have root access and run custom firmwre on.
- mabbo 5y agoIt's almost certainly impossible. With symmetric encryption, both the encryptor and decryptor need a copy of the same key- that's what makes it 'symmetric'. But with asymmetric encryption, the keys do not match. This means you can encrypt or sign the data with your private key, and then keep it private. The matching pubic key will decrypt or verify. The device would not have a copy of the private key in it, so it's unlikely it will ever leak.
- qwerty456127 5y agoI know but everything is likely to leak sooner or later.
- brokenmachine 5y agoPS5 is too attractive a target, anyone who cracks it will be etched in history forever. The hackers will come up with a workaround, they always do. I eagerly await the 33c3 presentation.