fryguy

11 ms·

181.
by fryguy 12y ago
The thing I don't understand about the "50% attacks" is that they should be detectable. There's legitimately going to be a transaction on the bitcoin network, and then a ghash.io block is going to show up that invalidate
182.
by fryguy 12y ago
Keep in mind that SLAM assumes a static scene. To stabilize a video with a moving target would mean that there's still going to be parallax otherwise you're going to get shadows (see the cool video on Oculus time warp: https:&#x2
183.
by fryguy 12y ago
I just hate that I can't charge my phone in my co-workers car because uses an iPhone. Vertical integration is great and all, but having horrible experiences with outside things isn't.
184.
by fryguy 12y ago
to go from deck_{a1,b1} to deck_{a2,b1} you need to remove the encryption. In order to remove E(k_{a1}, ?), you need to know which one was used, but can't, because it was shuffled. If you were able to know which one was used, you would
185.
by fryguy 12y ago
You don't really even need a stream cipher, just random data if you're using XOR. You're right that XOR is trivially commutative, but it is weak to known-plaintext attacks which makes it unsuitable for this algorithm. Suppose
186.
by fryguy 12y ago
Single-prime RSA is commutative. Agree on prime p, and encrypt with random prime e. d = e^-1 (mod p-1) which is easy to calculate using Extended Euclidean Algorithm. With keys e and r, (m^e)^r === m^er === m^re === (m^r)^e (mod p).
187.
by fryguy 12y ago
This only works for games where one party can know the contents of the deck, and can be trusted not to reveal them to others. For instance, if you're in the last spot in blackjack, the players ahead of you can know the cards in the dec
188.
by fryguy 12y ago
When I was looking for a place to live, I made my own program to scrape the MLS, and did similar things to this. My rectangles were hand drawn, not scraped from open data though, and were more based on the neighborhoods that had houses I kn
189.
by fryguy 12y ago
If you want to use the command-line version of git on windows in cmd/powershell, the default installed of git does this. You just need to select the middle option on the wizard page that says something along the lines of: * Use git bas
190.
by fryguy 12y ago
Fundamentally, static friction is the force that's going to be preventing the train from starting to move. If you had a semi-truck in neutral on a flat surface, I don't think you would be able to push it. The wheels aren't sl
191.
by fryguy 12y ago
I think a big advantage of something that accepts bitcoin through something like this is that even though the "normal" case is the same as things like paypal/stripe, it means that the backend supports bitcoin and can easily a
192.
by fryguy 12y ago
It's legal in the sense that you are buying an inferior version of HBO from Comcast than you are from other providers. Comcast isn't blocking HBO Go. It's just not giving it to you. Unfortunately, the only way to get HBO Go i
193.
by fryguy 12y ago
Some of them can even drift: http://www.iheartrobotics.com/2010/11/micromouse-news-and-vi...
194.
by fryguy 12y ago
Yes, there is a learning phase and a timed run.
195.
by fryguy 13y ago
This is showing a^2 + b^2 + 2ab (left image) = c^2 + 2ab (right image), since they both have area (a + b)^2. This implies that a^2 + b^2 = c^2, since 2ab is constant across sides.
196.
by fryguy 13y ago
I don't think they are related per se. Given A = B^a and R = B^r (not explicitly said in the first paragraph about El-Gamal, S is calculated by S = (H(R,M) - a)/r at the "Merge the hashes" step. At the next step, he&#x27
197.
by fryguy 13y ago
40 million pixels is roughly 40 ~1 megapixel (1280x720) images. It's not that many, especially when it's likely something like this: http://pascallin.ecs.soton.ac.uk/challenges/VOC/images/voc20...
198.
by fryguy 13y ago
The more cryptographic version is to sign a challenge with the private key that allows spending of the bitcoins on that address to prove that you own the address. Or you know, do what most people do and have a unique bitcoin address for eac
199.
by fryguy 13y ago
For all intents and purposes, they do though. Using as an input that was originally an output sent to an address is practically the same thing as coming from the address itself. It only really breaks down for more complicated transactions.
200.
by fryguy 13y ago
I've never been on the other side of a conspiracy theory. This is interesting.
201.
by fryguy 13y ago
A bitcoin doesn't have a unique number at all. The unique number that you are thinking of is effectively an "account id". When bitcoins are mined, essentially a ledger gets created saying that "account id" #12345673
202.
by fryguy 13y ago
Zimbabwe had hyper-inflation, which made currency worthless as soon as it was printed. Bitcoins have the opposite "problem".
203.
by fryguy 13y ago
Or 3, he wanted others that searched on Google to suffer as he did.
204.
by fryguy 13y ago
They didn't authorize me to eat a ham sandwich today, but that doesn't make it unauthorized. More to the point. If I recorded a game on my DVR, and the DVR streams it to another DVR in my house, that is not an unauthorized transmi
205.
by fryguy 13y ago
I was in the UK with my non-chip and pin card and there was a similar response. It took like 5 people at Tesco to figure it out.
206.
by fryguy 13y ago
a recent movie that's similar is Gravity . It doesn't even pass the reverse test since there are so few characters.
207.
by fryguy 13y ago
This is mostly true. Sometimes it's worth it to continue playing on the original slot machine if it has some sort of progressive feature like a jackpot that isn't shared with other machines of the same type.
208.
by fryguy 13y ago
Would this be a case where homomorphic encryption would be useful? This is really just a set intersection problem, which there are known algorithms for I believe.
209.
by fryguy 13y ago
I think the standard solution for the mailing lists is the "subscription" email pays the hashcash, but has an automated way to whitelist the email upon receipt.
210.
by fryguy 13y ago
I visited my friend in New York, and he took the express from Staten Island to Manhattan, and it was ~45 minutes without any stops (from the last Staten Island one to the first Manhattan one)

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