There's another reason to use shorter/smaller keys -> Mobile CPUs are puny. I've overheard people saying as "a good performance trick", but I don't think I'd be

There's another reason to use shorter/smaller keys -> Mobile CPUs are puny. I've overheard people saying as "a good performance trick", but I don't think I'd be joining that camp. There's also the issue of "where to tap" and if its behind the SSL acceleration boundary, this is moot anyways...