3 ms·
How long does the full encryption of a say, typical email (kilobyte of plain text or so) takes? It shouldn't be that much long, in the range of a few millisecon
by anovikov 13y ago
How long does the full encryption of a say, typical email (kilobyte of plain text or so) takes? It shouldn't be that much long, in the range of a few milliseconds, or a few dozen samples of a microphone (44,100hz max).
What i can't understand is how you can compress a whole RSA decryption key, which is say 4096 bits, into space SMALLER than itself (source data from microphone with 16 bits per sample, mono, at 44,100 hz, will take 6ms to accumulate 4096 bits - for sure encryption of a short email will take less!). So it sounds like a hoax.
Obviously the key can't be 'comperssed' because it's ramdom data with a high quality of randomness. And you cannot pull it out of SMALLER amount of data recorded by the microphone in the time it takes to make an encryption. That is, if anything happening within the processor can make acoustic noise loud enough for microphone to detect, which i really doubt.
I believe this even less than air-powered cars, or cold fusion.
- 4ad 13y agoWow, I don't want to steer this discussion into the "ye olde golden HN days" territory, but this is the lowest of the low I have read on HN recently. Really? You dismiss a scientific claim because you, YOU cannot understand it? There's a scientific paper written by a security researcher (who by the way co-invented RSA) that goes into great detail explaining what's going on. There's data to analyse. People can try to replicate the results. Do you have anything to say about the paper? There have been a few threads about this already. What I have learned from those, and from other threads where a paper is discussed, is that practically nobody who comments has read the paper.
- nwh 13y agoRead the paper. They're using a known input ciphertext to help aid this recovery and get around the limitations you've noted. Recovery also takes an hour, byte by byte with different decryptions.
- ColinWright 13y agoWonderful analysis of something completely different from the actual article. You make several good and useful points, it's just a shame that they're irrelevant. > I believe this even less than air-powered cars ... Air-powered vehicles are quite common. http://www.fastcoexist.com/1681429/this-air-powered-car-gets-81-miles-per-gallon http://www.fastcoexist.com/1681429/this-air-powered-car-gets... http://auto.howstuffworks.com/fuel-efficiency/vehicles/air-car.htm http://auto.howstuffworks.com/fuel-efficiency/vehicles/air-c... http://www.dailymail.co.uk/news/article-2266632/Car-runs-air-coming-soon-Peugeot-Citroen-unveil-new-117mpg-hybrid.html http://www.dailymail.co.uk/news/article-2266632/Car-runs-air... http://en.wikipedia.org/wiki/Compressed_air_car http://en.wikipedia.org/wiki/Compressed_air_car http://www.popularmechanics.com/cars/news/preview-concept/4217016 http://www.popularmechanics.com/cars/news/preview-concept/42...