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Aleksei Vasiliev posted:bitcoin private keys are 256-bit so quantum computers can't really do jack poo poo because they require the same amount of energy just they do the things in "parallel" ?
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Jan 10, 2015 15:33
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unpacked robinhood posted:so quantum computers can't really do jack poo poo because they require the same amount of energy just they do the things in "parallel" ?
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Jan 10, 2015 15:39
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unpacked robinhood posted:so quantum computers can't really do jack poo poo because they require the same amount of energy just they do the things in "parallel" ? bitcointalk says "mostly it's fine" afaict if you never reuse addresses then the public key isn't known (only a hash of it) and apparently quantum computers can't go from that to the private key so satoshi is fine
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Jan 10, 2015 15:42
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kalstrams posted:grover's algorithm load bearing paper wallets
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Jan 10, 2015 15:54
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Aleksei Vasiliev posted:a 219-bit counter  kalstrams posted:grover's algorithm 
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Jan 10, 2015 16:04
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unpacked robinhood posted:so quantum computers can't really do jack poo poo because they require the same amount of energy just they do the things in "parallel" ? kalstrams posted:best known theoretical attack, based on quantum stuff, seems to be grover's algorithm, which reduces x entries to sqrt(x) entries, so still too long (for now) http://en.wikipedia.org/wiki/Elliptic_curve_cryptography#Quantum_computing_attacks
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Jan 10, 2015 16:09
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Sweevo posted:load bearing paper wallets
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Jan 10, 2015 16:09
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rip buttcoin
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Jan 10, 2015 16:13
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Sweevo posted:load bearing paper wallets
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Jan 10, 2015 16:34
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Robawesome posted:The worst-case scenario is that you might accept transactions as confirmed which are later reversed. chargebacks at last
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Jan 10, 2015 17:15
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this is the worst open ssl problem ever 
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Jan 10, 2015 17:59
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Aleksei Vasiliev posted:bitcoin private keys are 256-bit bitcoin private keys are 256 bits, but it's public-key crypt, so for standard elliptic curve reasons they only have 128 bit security 128 bit security is totally uncrackable today, but there is an imaginable future technology that could crack it: quantum computing if we could build large scale quantum computers they could brute force 128 bit symmetric encryption easily (but probably not 256 bits) they would also break all practical sizes of RSA and elliptic curve crypto, so bitcoin and most other things would be hosed
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Jan 10, 2015 18:05
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I just saw the imitation game so I'm utterly convinced any code can be broken if you throw enough spinny wheels at it
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Jan 10, 2015 18:17
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RZA Encryption posted:So if someone had warehouses of bitcoin miners, why wouldn't they just be trying 24/7 to guess the private key for satoshi's wallet? The last question was asked for the first time, half in jest, on May 21, 2061, at a time when humanity first stepped into the light. The question came about as a result of a five dollar bet over highballs, and it happened this way: Alexander Adell and Bertram Lupov were two of the faithful attendants of Multivac. As well as any human beings could, they knew what lay behind the cold, clicking, flashing face -- miles and miles of face -- of that giant computer. They had at least a vague notion of the general plan of relays and circuits that had long since grown past the point where any single human could possibly have a firm grasp of the whole. Multivac was self-adjusting and self-correcting. It had to be, for nothing human could adjust and correct it quickly enough or even adequately enough -- so Adell and Lupov attended the monstrous giant only lightly and superficially, yet as well as any men could. They fed it data, adjusted questions to its needs and translated the answers that were issued. Certainly they, and all others like them, were fully entitled to share In the glory that was Multivac's. For decades, Multivac had helped design the miners that enabled bitcoin to reach the Moon. But past that, Earth could not supply the energy to run the miners. Too much energy was needed to go past the moon. Earth exploited its coal and uranium with increasing efficiency, but there was only so much of both. But slowly Multivac learned enough to answer deeper questions more fundamentally, and on May 14, 2061, what had been theory, became fact. The energy of the sun was stored, converted, and utilized directly on a planet-wide scale. All Earth turned off its burning coal, its fissioning uranium, and flipped the switch that connected all of it to a small station, one mile in diameter, circling the Earth at half the distance of the Moon. All bitcoin miners ran by invisible beams of sunpower. Seven days had not sufficed to dim the glory of it and Adell and Lupov finally managed to escape from the public function, and to meet in quiet where no one would think of looking for them, in the deserted underground chambers, where portions of the mighty buried body of Multivac showed. Unattended, idling, sorting data with contented lazy clickings, Multivac, too, had earned its vacation and the boys appreciated that. They had no intention, originally, of disturbing it. They had brought a bottle with them, and their only concern at the moment was to relax in the company of each other and the bottle. "It's amazing when you think of it," said Adell. His broad face had lines of weariness in it, and he stirred his drink slowly with a glass rod, watching the cubes of ice slur clumsily about. "All the energy we can possibly ever use for mining, free. Enough energy, if we wanted to draw on it, to melt all Earth into a big drop of impure liquid iron, and still never miss the energy so used. All the energy we could ever use, forever and forever and forever, and we waste it on mining all the bitcoins." Lupov cocked his head sideways. He had a trick of doing that when he wanted to be contrary, and he wanted to be contrary now, partly because he had had to carry the ice and glassware. "Not all the bitcoins," he said. "Oh, hell, just about all of them, Bert." "That's not all of them." "All right, then. Millions and millions, 18 milion maybe" Lupov put his fingers through his thinning hair as though to reassure himself that some was still left and sipped gently at his own drink. "18 million coins isn’t all of them." "Will, it will last our time, won't it?" "So would the dollar." "All right, but now we can hook up each individual miner to the Solar Station, and it can mine to Pluto and back a million times without ever worrying about fuel. You can't do THAT with the dollar. Ask Multivac, if you don't believe me." "I don't have to ask Multivac. I know that." "Then stop running down what Multivac's done for us," said Adell, blazing up. "It did all right." "Who says it didn't? What I say is that a we won’t get all the bitcoins. That's all I'm saying. We're safe for 18 million coins, but then what?" Lupov pointed a slightly shaky finger at the other. "And don't say we'll switch to an alt coin." There was silence for a while. Adell put his glass to his lips only occasionally, and Lupov's eyes slowly closed. They rested. Then Lupov's eyes snapped open. "You're thinking we'll switch to another coin when bitcoin is done, aren’t you?" "I'm not thinking." "Sure you are. You're weak on logic, that's the trouble with you. You're like the guy in the story who was caught in a sudden shower and Who ran to a grove of trees and got under one. He wasn't worried, you see, because he figured when one tree got wet through, he would just get under another one." "I get it," said Adell. "Don't shout. When the mining is done, all the coins are done." "Darn right they will," muttered Lupov. "It all had a beginning in Satoshi’s original mining, whatever that was, and it'll all have an end when all the coins are mined" "What about Satoshi’s coins then?," said Adell, standing on his dignity. "Not a chance." "Why not? Someday." "Never." "Ask Multivac." "You ask Multivac. I dare you. Five dollars says it can't be done." Adell was just drunk enough to try, just sober enough to be able to phrase the necessary symbols and operations into a question which, in words, might have corresponded to this: Will mankind one day be able to find the key to Satoshi’s wallet? Multivac fell dead and silent. The slow flashing of lights ceased, the distant sounds of clicking relays ended. Then, just as the frightened technicians felt they could hold their breath no longer, there was a sudden springing to life of the teletype attached to that portion of Multivac. Five words were printed: INSUFFICIENT DATA FOR MEANINGFUL ANSWER. "No bet," whispered Lupov. They left hurriedly. By next morning, the two, plagued with throbbing head and cottony mouth, had forgotten about the incident. Just-In-Timeberlake fucked around with this message at 18:29 on Jan 10, 2015 |
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Jan 10, 2015 18:27
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as a rational actor, wouldn't Multivac have already stolen all the world's bitcoins for itself decades ago?
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Jan 10, 2015 18:35
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Aleksei Vasiliev posted:https://bitcointalk.org/index.php?topic=133425.0 it depends on how fast the attack is. if someone who has a quantum computer that can break your key in seconds sees your transaction they can rebroadcast their own transaction that gives them all your money instead. but if it takes more than a couple hours then a block would've been found by then
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Jan 10, 2015 18:39
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my autocorrect is stuck on french and changes together into Roger ver
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Jan 10, 2015 19:23
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unpacked robinhood posted:my autocorrect is stuck on french and changes together into Roger ver i think that makes you bitcoin moses
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Jan 10, 2015 19:25
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Boxturret posted:i think that makes you bitcoin moses john the statist
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Jan 10, 2015 19:32
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unpacked robinhood posted:my autocorrect is stuck on french and changes together into Roger ver j'aime comment
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Jan 10, 2015 19:36
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http://www.gaycoin.eu/
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Jan 10, 2015 19:38
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AlbieQuirky posted:j'aime comment je n'aime pas comment 
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Jan 10, 2015 19:42
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reste sauf, fantôme du comment
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Jan 10, 2015 19:42
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dick quack
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Jan 10, 2015 19:46
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j'anime comment
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Jan 10, 2015 19:47
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omlette du fromage
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Jan 10, 2015 19:49
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je suis charlie shrem
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Jan 10, 2015 19:56
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ou est le piscine
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Jan 10, 2015 20:04
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l'usine de bitcoin
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Jan 10, 2015 20:09
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JFairfax posted:je suis charlie shrem 
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Jan 10, 2015 20:12
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JFairfax posted:je suis charlie shrem  also: https://bitcointalk.org/index.php?topic=817069.0 tl;dr the dude bailed with assloads of cash and is still getting white knighted quote:If you are late paying your phone bill, did you scam the phone company? When you make your late payment are you still a scammer but you paid off your scam-victim (phone company)? good thing he's going to get a scammer tag oh wait, they took that out, so negative feedback'ed oh wait they took that out
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Jan 10, 2015 20:19
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JFairfax posted:je suis charlie shrem
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Jan 10, 2015 20:20
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JFairfax posted:je suis charlie shrem welp
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Jan 10, 2015 20:22
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what does that mean 
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Jan 10, 2015 20:24
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thank you rotor
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Jan 10, 2015 20:26
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kalstrams posted:what does that mean really
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Jan 10, 2015 20:27
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DNova posted:really
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Jan 10, 2015 20:31
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kalstrams posted:nevermind, mystery resolved after i started to treat shrem as surname and not a word 
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Jan 10, 2015 20:34
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kalstrams posted:nevermind, mystery resolved after i started to treat shrem as surname and not a word pretend this reply is shrem's face photoshopped onto the magazine. thx
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Jan 10, 2015 20:35
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Dren posted:pretend this reply is shrem's face photoshopped onto the magazine. thx Bitcoin est de la merde , il ne se arręte pas l'emprisonnement
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Jan 10, 2015 20:43
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