5 ms·
Technical details aside, I find it quite amusing that the hardware in my pi zero is more secure than my desktop that is two orders of magnitude more expensive
by tomxor 9y ago
Technical details aside, I find it quite amusing that the hardware in my pi zero is more secure than my desktop that is two orders of magnitude more expensive
- Zaak 9y agoWell, the vulnerabilities are directly connected to performance-enhancing architectural features, so...
- deleted 9y ago[deleted]
- tomxor 9y agoWhich is why i said technical details aside. I think it's interesting, you are not just paying for speed, you are paying for a compromise, because the speed is gained through complexity, which not only increases the chance of error (by design or implementation) but in the case of a high degree of speculative execution can translate into worse performance per watt. In short, it's the whole "more is less" thing.
- Zaak 9y ago> you are paying for a compromise Very good point. Apparently including at least one compromise that most people (probably including the engineers who designed the CPUs) didn't know they were making.
- Demiurge 9y agoAnd yet, my abacus is even more secure ;-)
- trynewideas 9y agoOnly if you wear gloves while using it and shake it after finishing a calculation.
- jabl 9y agoBeen reading Cryptonomicon, have we?
- tomxor 9y agoOnly if you managed to find a flaw in the arm cores used in the Pi.
- frandroid 9y agoThere might be some side-channel attacks if your rows are too close to each other....
- mywittyname 9y agoWrong kind of arm processor.
- krylon 9y agoIs an Abakus Turing-complete?
- deleted 9y ago[deleted]
- disconnected 9y agoIt isn't funny or witty to point out that an Opel Corsa gets better gas mileage than a 747, even if it is factually correct. I didn't downvote you (can't even do it), but I suspect you are getting downvoted because your analogy is so off the mark that it can't even be called "Apples vs Oranges". edit: replying to the "why the downvotes" which has since been edited away
- tomxor 9y agoThey are obviously way differently powered CPUs, but if they were as incomparable as you suggest then this article wouldn't even exist. It doesn't even matter though, I said technical details aside... I'm not stupid i know a pi zero is slow, but it's a cheap computer that happens to be invulnerable to three really bad sidechannel attacks that plague all big shiny expensive ones. How is that not a little amusing. Not any more now I've had to argue for it.
- lucb1e 9y ago> It isn't funny or witty to point out that an Opel Corsa gets better gas mileage than a 747 Actually, if it's true that a car gets a better mileage than a big airplane (more in one vehicle = more efficient, people seem to believe) I would find that interesting. Similarly, I can see how OP thinks it's ironic that a very cheap machine is not vulnerable whereas a quite expensive piece of equipment is, making it seemingly less-well engineered.
- tschuy 9y agoTransatlantic flights average 75 mpg per passenger, but can be up to almost 100 mpg per passenger: https://en.wikipedia.org/wiki/Fuel_economy_in_aircraft https://en.wikipedia.org/wiki/Fuel_economy_in_aircraft Jet fuel is 37.4 MJ/L; compare to gasoline at 34.2: https://en.wikipedia.org/wiki/Energy_density#Energy_densities_of_common_energy_storage_materials https://en.wikipedia.org/wiki/Energy_density#Energy_densitie... An electric car will have up to 150 miles-per-gallon equivalent (aka 150 miles per the same amount of energy that's in one gallon of gasoline): https://en.wikipedia.org/wiki/Miles_per_gallon_gasoline_equivalent#All-electric_cars https://en.wikipedia.org/wiki/Miles_per_gallon_gasoline_equi... So therefore, an electric car with just the driver is more efficient energy-wise than an airplane, while an average airplane is better than a gas car with even three people in it.