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them: wait.. i take the code i am good at making fast.. and i make it go slower? with different constraints?? me: yes. exactly that. slower but as fast as you can and still be constant time them: OH MY GOD YES FINALLY A WHOLE NEW SET OF CONSTRAINTS TO PROBLEM SOLVE IN
If “rolling crypto” is defined as resisting side channel attacks on primitives, yes. This wasn’t something too many people cared very much about. Today, of course, sophisticated side channel key extraction (without total system compromise) happens every day in the wild ;)
Enough coffee and you can *smell* the multiplications as they happen.
Are voltage/heat/acoustic side channels in the wild or still just in the lab? It seems like if those attacks are feasible it might be possible to extract a key with javascript running inside a browser sandbox on the same CPU as the signer.
Some of these definitely get deployed sometimes.
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