3 ms·
I suspect you do not understand given the phrasing. Think of Tunneling or layers or nesting dolls. The order doesn't particularly matter from a security persp
by mjevans 3y ago
I suspect you do not understand given the phrasing.
Think of Tunneling or layers or nesting dolls. The order doesn't particularly matter from a security perspective. Though today I'd wrap with the conventional algorithm on the OUTSIDE layer, since it takes less computational time to check / validate. The inner layer would then be one or more of the post-quantum algorithms; a particularly paranoid application might use more than one if something absolutely must remain a secret.
- nailer 3y agoThanks for answering. So you’re encrypting with an asymmetric post quantum algorithm then using that as a payload with regular ED25519 or similar? What value does the pre quantum wrapper add?
- mjevans 3y agoIt's like using different technologies to protect against nuclear waste leaking from storage. Each plausibly suitable layer of a different sort makes a leak less likely. Post-quantum algorithms are, as yet, young and very possibly poorly understood. They may even offer no security at all (due to presently unseen flaws); therefore as a hedge against that include at least another currently in use and current best practice algorithm so that at least _that_ level of security is retained. Plus, as I pointed out several replies ago, if the current (and fast since reasonable key size Elliptic Curve based) algorithm is the outer layer it can be validated quickly which is a better guard against denial of service attacks and other poor fakes.