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2227
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Bitcoin / Hardware / Re: BitForce SC - full custom ASIC
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on: May 31, 2012, 03:10:28 PM
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Which, I suspect, is why they abandoned the LargeCoin unit, since it wouldn't be anywhere close to what they wanted.
Did they actually? I haven't heard from them, but the website is still up. Not sure when they were planning on delivering either. The guy has chatted to some buyers on the phone, maybe they should give him a ring and see what's up. |
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2229
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Alternate cryptocurrencies / Mining (Altcoins) / Re: Quad XC6SLX150 Board - Initial Price £400/$640/520€
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on: May 31, 2012, 02:17:50 PM
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Are you kidding me? Delta AFB1212. There is no reason to not use industrial fans, no cheap Chinese shit.
Well in that case, why AFB? Why not the TSB or PFB series? lol Such powerful fans need their own boards with separate power circuitry so that they don't insert all kinds of inductive shit into the ground and power planes of the main board electronics. |
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2234
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Bitcoin / Bitcoin Technical Support / Re: btc project security: Encryption of php files + db entry hashes = more security?
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on: May 31, 2012, 01:27:44 PM
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In order to run code in an autonomous manner, a server must store the decryption key somewhere, and a hacker can usually find it, rendering the encryption useless. Limited exceptions can be made for keys that are required on boot and not stored, but when that happens they are stored in memory and can possibly still be had by a smart hacker.
walletpassphrase won't help, because the hacker can either: scan your memory cache or just use the same session you are already using. for example, use your own JSON-RPC to send bitcoins. Exactly, and the type of attack depends on how much access the hacker has, and how he got in. If he was able to reset the root password through a control panel for instance (like bitcoinica), he would have root access to plant a keylogger or pick up the passphrase if it were stored on disk. If he broke in through a SQL vulnerability, he could grab the passphrase from memory, even if it were not stored on disk. It's a difficult kind of situation, but HSMs such as what DeathAndTaxes is looking into can mitigate the risk somewhat. |
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2235
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Bitcoin / Pools / Re: Looking for People that have 50GH/sec or more 200% PPS
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on: May 31, 2012, 01:23:49 PM
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10 GHash/s makes 0.44 btc in 10 minutes. Why would anyone with that much hashpower spend the time to switch everything over to you just to make 0.56 btc or $3. Not really worth their time IMHO.
miners with 50+ ghash/s really ought to have a proxy in place already, which would make it very easy and painless. Centralized point of failure you say ? No thanks ! Interesting idea nonetheless. Not something controlled by someone else, but a box onsite. If coded properly, it will be just as reliable as your internet connection or more so, which is already a point of failure. |
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2236
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Bitcoin / Bitcoin Discussion / Re: IEEE Spectrum report on the future of money
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on: May 31, 2012, 01:20:58 PM
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Seems decent, except for the "public key cryptography 101" box: analogy with a pair of keys is confusing and wrong. My favorite explanation is the one I stumbled upon on this forum (not sure if Netrin came up with it or he adopted it) -
Yeah. Here's a magical analogy for public key cryptography: I generate a private key and numerous public unlocked treasure chests. I give these open treasure chests to all of my friends (it's easy to copy them). Whenever a friend wants to send me a message, they just put the message in my public treasure chest and close the lid. Now even they can not open it again. Only I, with my unique private key, can open the chest.
After I generated the public keys, I don't really need them any more, unless I want to send messages to myself. But no one needs the private key to lock a message. The private key is only required to open a message.
I don't see anything that is technically incorrect about the PKI explanation in the graphic. Do you care to explain what is wrong with it? netrin's quote is cool for the noobs, but it doesn't mean that what is in the graphic is incorrect at all. Both quotes are very correct and explained differently. |
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2240
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Economy / Goods / Re: Come in and Trade Ammo or Talk about Guns!
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on: May 31, 2012, 12:55:17 PM
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i live in florida and i've been buying up all the ammo i can. 1000+ rnds from this thread so far. The zombies will come, the question is how much more time do we have and when will we start seeing more infections.
Someone must be getting ready to distribute mass amounts of cut LSD xD |
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