6 Jul
2016
6 Jul
'16
9:47 a.m.
Yes, but... 1. Memory is cheap. Even uP will have decent sized memories. Every delta in line widths produces at least O(delta^2) in memory size, if not O(delta^3). 2. SIMD-type processors are cheap and quite energy-efficient. There's really no reason for a traditional 16-bit processor anymore. 3. Most crypto codes are 1-1 functions, and therefore *reversible*. In theory, reversible functions can be computed with asymptotically zero energy dissipation. At 07:31 AM 7/6/2016, Richard Howard wrote:
BTW, there is an interesting mathy problem here--how do you do security when you have only a few microjoules and a few kB of memory in a 16 bit processor?
RSA is not even remotely feasible.