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NSA and ECC Development & Technical Discussion
QuoteHow large are Lamport signatures with security equal to 256 bit ECDSA?256-b…
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n/a | gmaxwell | September 12, 2013, 12:12:12 AM |
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why did bitcoin choose secp256k1 over secp256r1? Development & Technical Discussion
That thread is a _little_ misleading. The author is writing about the tradition…
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n/a | gmaxwell | September 11, 2013, 03:33:34 PM |
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Warning: computer's date and time are incorrect! Bitcoin Technical Support
Can people please open up the debug console and run getpeerinfo when the error…
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n/a | gmaxwell | September 11, 2013, 03:26:00 PM |
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Proposal: Base58 encoded HD Wallet master seed with optional encryption Development & Technical Discussion
I like the network dependency the way it is, because it's clearly defined how to…
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n/a | gmaxwell | September 11, 2013, 03:17:16 PM |
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Bitcoin-Qt / bitcoind version 0.8.4 released, fixes critical DoS vulnerability Bitcoin Discussion
A shame. I can deal with waiting four days to access my coins or move my wallet…
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n/a | gmaxwell | September 11, 2013, 02:37:13 PM |
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SHA-256 is designed by the NSA - do they have a backdoor? Bitcoin Discussion
Public key is always going to be trickier to keep secure as they all rely on ass…
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n/a | gmaxwell | September 11, 2013, 09:20:58 AM |
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Bitcoin-Qt / bitcoind version 0.8.4 released, fixes critical DoS vulnerability Bitcoin Discussion
Ok. This prevents it from failing but does not seem to make it go faster. Now…
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n/a | gmaxwell | September 11, 2013, 08:52:06 AM |
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Deterministic Usage of DSA and ECDSA Digital Signature Algorithms (RFC 6979) Development & Technical Discussion
I'm not sure that in general it's completely true that a side-channel attack on…
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n/a | gmaxwell | September 11, 2013, 07:29:53 AM |
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Roger Ver Endorses Trace Mayer For Bitcoin Foundation Board Seat Bitcoin Discussion
You may note that I revised my message to make abundantly clear that I am statin…
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n/a | gmaxwell | September 11, 2013, 05:28:10 AM |
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Roger Ver Endorses Trace Mayer For Bitcoin Foundation Board Seat Bitcoin Discussion
As a Bitcoin-QT core developer, foundation member, and Bitcoin enthusiast I am s…
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n/a | gmaxwell | September 11, 2013, 05:01:09 AM |
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CoinJoin: Bitcoin privacy for the real world Development & Technical Discussion
That's a neat idea (mixing large transactions) but unfortunately I cannot see ho…
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n/a | gmaxwell | September 11, 2013, 04:53:52 AM |
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Proposal: Base58 encoded HD Wallet master seed with optional encryption Development & Technical Discussion
Although I agree that the scrypt 214/8/8 KDF isn't very strong, consider that us…
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n/a | gmaxwell | September 11, 2013, 04:46:10 AM |
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What if dev-team is compromised? Bitcoin Discussion
They just need a dead man's switch. When they are "compromised" they simply don'…
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n/a | gmaxwell | September 11, 2013, 02:10:41 AM |
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Bitcoin-Qt / bitcoind version 0.8.4 released, fixes critical DoS vulnerability Bitcoin Discussion
See other threads. re-run with "-checklevel=2"Here is the aforementioned other…
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n/a | gmaxwell | September 10, 2013, 11:53:21 PM |
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All Bitcoind / Bitcoin-qt nodes failing to come up. Workaround inside! Bitcoin Technical Support
I encountered this problem this morning before I was aware of this thread, but i…
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n/a | gmaxwell | September 10, 2013, 11:45:07 PM |
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Landmark Event For Bitcoin: First Full & Independent Wallet Bitcoin Discussion
Very cool. Though I'll repeat what I've told alternative implementers,_Please_ d…
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n/a | gmaxwell | September 10, 2013, 02:12:13 PM |
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Downloading the Blockchain.... Development & Technical Discussion
Strange I bootstrapped a node from genesis block to current in less than 18 hour…
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n/a | gmaxwell | September 10, 2013, 02:59:31 PM |
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Amount of addresses created on Testnet3 Development & Technical Discussion
Oh, you're flooding the network with unconfirmed transactions and then noticing…
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n/a | gmaxwell | September 10, 2013, 02:42:22 PM |
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ECDSA Weak signing Development & Technical Discussion
K=secret-key is no more a special value than K=11 (or 12 or 13 or any other spec…
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n/a | gmaxwell | September 10, 2013, 02:36:21 PM |
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CoinJoin: Bitcoin privacy for the real world Development & Technical Discussion
I agree that it might not be ideal, but it does not compromise the anonymization…
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n/a | gmaxwell | September 10, 2013, 02:32:03 PM |
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Amount of addresses created on Testnet3 Development & Technical Discussion
With using Testnet=1 our and using client we find that after about 300 addresses…
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n/a | gmaxwell | September 10, 2013, 02:29:43 PM |
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Auxiliary block: Increasing max block size with softfork Development & Technical Discussion
Technically, that's correct. Practically, my statement is dead on. Usurping Bitc…
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n/a | gmaxwell | September 10, 2013, 02:04:39 PM |
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CoinJoin: Bitcoin privacy for the real world Development & Technical Discussion
In order to avoid confusion, this change address is the same as the input addres…
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n/a | gmaxwell | September 10, 2013, 01:20:51 PM |
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ECDSA Weak signing Development & Technical Discussion
Once again this thread has nothing to do with RNG.It is just a special case, ver…
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n/a | gmaxwell | September 10, 2013, 01:15:15 PM |
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Deterministic Usage of DSA and ECDSA Digital Signature Algorithms (RFC 6979) Development & Technical Discussion
I'm probably missing something here, but it seems to me that the argument that y…
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n/a | gmaxwell | September 10, 2013, 12:01:51 PM |
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ECDSA Weak signing Development & Technical Discussion
Are you seriously suggesting that we should test here whether we're dealing with…
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n/a | gmaxwell | September 10, 2013, 11:50:19 AM |
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Zerocoin: Anonymous Distributed E-Cash from Bitcoin Development & Technical Discussion
uh wtf is with that novacoin page? Did the author of that look at how script wo…
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n/a | gmaxwell | September 10, 2013, 11:36:10 AM |
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All Bitcoind / Bitcoin-qt nodes failing to come up. Workaround inside! Bitcoin Technical Support
Why this resulted in bitcoin failure to come up? With security model in place s…
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n/a | gmaxwell | September 10, 2013, 11:08:37 AM |
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Auxiliary block: Increasing max block size with softfork Development & Technical Discussion
Technically, that's correct. Practically, my statement is dead on. Usurping Bitc…
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n/a | gmaxwell | September 10, 2013, 02:02:50 AM |
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What if dev-team is compromised? Bitcoin Discussion
In all seriousness though, I'd like to have a mechanism whereby if a core develo…
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n/a | gmaxwell | September 10, 2013, 01:47:41 AM |
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Auxiliary block: Increasing max block size with softfork Development & Technical Discussion
With this, it's not attackers we should be worried about. Think about it: changi…
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n/a | gmaxwell | September 10, 2013, 12:52:24 AM |
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Auxiliary block: Increasing max block size with softfork Development & Technical Discussion
Fortunately since it would take a conspiracy or compromise of at least _three_ p…
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n/a | gmaxwell | September 09, 2013, 11:42:36 PM |
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Auxiliary block: Increasing max block size with softfork Development & Technical Discussion
This reminds us that a 51% attacker could do a lot more than we usually think.Du…
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n/a | gmaxwell | September 09, 2013, 11:28:59 PM |
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Auxiliary block: Increasing max block size with softfork Development & Technical Discussion
That is why I opted not to release this idea. This is extremely powerful and mus…
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n/a | gmaxwell | September 09, 2013, 11:02:12 PM |
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far future issues Bitcoin Discussion
Mars can have its own altcoin. Politics will likely make having a single blockch…
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n/a | gmaxwell | September 09, 2013, 07:52:10 PM |
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Proposal: Base58 encoded HD Wallet master seed with optional encryption Development & Technical Discussion
Hm. Why are such weak KDFs supported? Considering that you can now obtain speci…
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n/a | gmaxwell | September 09, 2013, 07:30:09 PM |
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All Bitcoind / Bitcoin-qt nodes failing to come up. Workaround inside! Development & Technical Discussion
Quoteall values should work in blocks.Except now nVersion == 0 or with the high…
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n/a | gmaxwell | September 09, 2013, 06:21:44 PM |
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Deterministic wallets and security against ECDSA break Armory
The primary reason for the inclusion of the private derivation is that the publi…
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n/a | gmaxwell | September 09, 2013, 05:48:05 PM |
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NSA and ECC Development & Technical Discussion
Today Bitcoin only supports a single type of address construction (excluding P2…
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n/a | gmaxwell | September 09, 2013, 03:56:44 PM |
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NSA and ECC Development & Technical Discussion
Lamport signatures - cool I never heard of that until today. However, one proper…
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n/a | gmaxwell | September 09, 2013, 05:28:45 PM |
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Armory - Discussion Thread Armory
Did you recompile? Also, did you install the libleveldb package?You are really…
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n/a | gmaxwell | September 09, 2013, 05:11:10 PM |
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NSA and ECC Development & Technical Discussion
Deterministic wallets are presumably also broken if ECC is broken?Huh? What do y…
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n/a | gmaxwell | September 09, 2013, 04:57:17 PM |
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NSA and ECC Development & Technical Discussion
I suppose should mention that I have (now couple year old) half finished impleme…
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n/a | gmaxwell | September 09, 2013, 04:14:21 PM |
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Deterministic Usage of DSA and ECDSA Digital Signature Algorithms (RFC 6979) Development & Technical Discussion
Last news about DRBG: http://en.wikipedia.org/wiki/Dual_EC_DRBG#Controversy Old…
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n/a | gmaxwell | September 09, 2013, 02:35:15 PM |
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ECDSA Weak signing Development & Technical Discussion
QuoteYou might as well just deny K=11, since if they used 11 (or any other speci…
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n/a | gmaxwell | September 09, 2013, 11:57:55 AM |
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NSA and ECC Development & Technical Discussion
However it also implies that the generation criteria might be more complicated t…
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n/a | gmaxwell | September 09, 2013, 11:32:50 AM |
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All Bitcoind / Bitcoin-qt nodes failing to come up. Workaround inside! Development & Technical Discussion
gmaxwell, I'm curious about a discrepancy between the wiki's Protocol Specificat…
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n/a | gmaxwell | September 09, 2013, 11:20:55 AM |
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ECDSA Weak signing Development & Technical Discussion
it costs nothing to add this test in the module signature;Sure it does. For exam…
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n/a | gmaxwell | September 09, 2013, 11:17:39 AM |
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Corrupted Blockchain Data Detected Bitcoin Technical Support
How long to wait before problem is far enough back, two days/one week?Once you a…
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n/a | gmaxwell | September 09, 2013, 05:57:05 AM |
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Corrupted Blockchain Data Detected Bitcoin Technical Support
After it finishes you should be working, but if you restart again it will fail a…
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n/a | gmaxwell | September 09, 2013, 04:58:06 AM |
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NSA and ECC Development & Technical Discussion
Is this related to something you responded to me in another thread, when we were…
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n/a | gmaxwell | September 09, 2013, 05:15:53 AM |
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Corrupted Blockchain Data Detected Bitcoin Technical Support
Please see: https://bitcointalk.org/index.php?topic=290922.0
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n/a | gmaxwell | September 09, 2013, 04:44:45 AM |
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[11TH/s] p2pool: Decentralized, DoS-resistant, Hop-Proof pool Pools
I suppose the current title reflects the weekly average (we are at 11.6TH/s for…
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n/a | gmaxwell | September 08, 2013, 04:35:33 PM |
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NSA and ECC Development & Technical Discussion
Bitcoin uses a curve whose magic numbers were specified by Certicom -Certicom is…
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n/a | gmaxwell | September 08, 2013, 04:26:29 PM |
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NSA and ECC Development & Technical Discussion
EDIT: gmaxwell, was the algorithm for parameter selection published? If so, I mu…
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n/a | gmaxwell | September 08, 2013, 08:26:34 AM |
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Why did we raise the Blocksize limit? Bitcoin Discussion
this is the commit one should people point to, cause this is the first commit wi…
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n/a | gmaxwell | September 08, 2013, 05:29:51 AM |
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RNG using Block informations Development & Technical Discussion
That would mean that miners need to manipulate 2 blocks in a row to rig the game…
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n/a | gmaxwell | September 08, 2013, 05:28:14 AM |
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Why did we raise the Blocksize limit? Bitcoin Discussion
Thats not quite the revision where it changed. It changed in several steps, firs…
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n/a | gmaxwell | September 08, 2013, 04:19:19 AM |
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[8000GH/s] p2pool: Decentralized, DoS-resistant, Hop-Proof pool Pools
Are they the same every block or do they vary? Also, could you share what some o…
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n/a | gmaxwell | September 08, 2013, 02:05:32 AM |
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RNG using Block informations Development & Technical Discussion
I don't have one yet, but I think using the merkle root is better than the block…
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n/a | gmaxwell | September 08, 2013, 01:51:52 AM |
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RNG using Block informations Development & Technical Discussion
merkle root hash of the next blockYou use the merkle root of the next block??? W…
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n/a | gmaxwell | September 07, 2013, 11:30:36 PM |
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Sent my coins from BitcoinQT to blockchain.info, client crashed, no transaction? Bitcoin Technical Support
run the wallet with -rescan or on windows you can make a shortcut to the qt and…
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n/a | gmaxwell | September 07, 2013, 10:18:09 PM |
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RNG using Block informations Development & Technical Discussion
Not sure if this is a troll or not but I will say this much: All I wanted to kno…
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n/a | gmaxwell | September 07, 2013, 10:05:43 PM |
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Why did we raise the Blocksize limit? Bitcoin Discussion
The limit has been 1MB since a limit was created.This isn't pedantically correct…
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n/a | gmaxwell | September 07, 2013, 09:57:02 PM |
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can a tx determine who is allowed to mine it? power to the users Development & Technical Discussion
The power has been not in the hands of users, but in the hands of pools,Yep.Quot…
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n/a | gmaxwell | September 07, 2013, 09:52:41 PM |
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NSA and ECC Development & Technical Discussion
EDIT: gmaxwell, was the algorithm for parameter selection published? If so, I mu…
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n/a | gmaxwell | September 07, 2013, 09:34:32 PM |
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NSA and ECC Development & Technical Discussion
The SEC random curves have "random numbers" in them, but are they really random?…
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n/a | gmaxwell | September 07, 2013, 04:58:23 PM |
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Has the NSA already broken bitcoin? Bitcoin Discussion
with breaking 'any' encryption was ment the conventional encryption for files -…
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n/a | gmaxwell | September 07, 2013, 01:33:13 AM |
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[BTC] Does it take up to a week to send or recieve BTC????????!!!!!!!!! Bitcoin Technical Support
I was suppose to recieve 0.00000672Transactions this small will generally not co…
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n/a | gmaxwell | September 07, 2013, 01:24:32 AM |
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Sent my coins from BitcoinQT to blockchain.info, client crashed, no transaction? Bitcoin Technical Support
Do you have any information about the crash?In any case, if your client went dow…
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n/a | gmaxwell | September 07, 2013, 01:13:50 AM |
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Bug? Reduced minrelaytxfee allows creating (not just relaying) non-standard tx Development & Technical Discussion
Before the change, minrelaytxfee had no effect whatsoever on transactions the cl…
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n/a | gmaxwell | September 07, 2013, 01:08:49 AM |
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For fun: the lowest block hash yet Development & Technical Discussion
To answer both your questions David, yes a hash can repeat and yes a hash with a…
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n/a | gmaxwell | September 06, 2013, 04:55:29 PM |
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2GH NinjaStick USB Miner powered by Bitfury Hardware
The main cost driver is Bitfury and their selling practices/pricing. I'm expect…
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n/a | gmaxwell | September 06, 2013, 02:53:20 PM |
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(Successful) Dictionary Attack Against Private Keys Bitcoin Discussion
I think I'm missing something here. Isn't it easier to use a coin control patch/…
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n/a | gmaxwell | September 06, 2013, 01:20:49 PM |
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Blockchain just reported false transaction of my wallet {156.8 BTC} Service Discussion
Someone just laundered their money through your compromised account. Congrats! Y…
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n/a | gmaxwell | September 06, 2013, 10:07:43 AM |
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(Successful) Dictionary Attack Against Private Keys Bitcoin Discussion
It you can get true random numbers from these processes then why do companies ma…
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n/a | gmaxwell | September 06, 2013, 10:03:41 AM |
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Has the NSA already broken bitcoin? Bitcoin Discussion
I still think because of Bruce Schneier's recent blog that we should hard fork o…
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n/a | gmaxwell | September 06, 2013, 09:46:24 AM |
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NSA might be behind weakening of Android Random Number Generator problem Development & Technical Discussion
Don't be so sure that you can't plant backdoors in open source software. Some o…
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n/a | gmaxwell | September 06, 2013, 09:24:10 AM |
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NSA might be behind weakening of Android Random Number Generator problem Development & Technical Discussion
I think we all understand your explanation, but some of us just don't quite beli…
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n/a | gmaxwell | September 06, 2013, 09:11:58 AM |
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(Successful) Dictionary Attack Against Private Keys Bitcoin Discussion
Maybe I am wrong but I don't think any wallet currently being used uses actual r…
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n/a | gmaxwell | September 06, 2013, 08:55:49 AM |
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listtransactions <count> <from> returns incorrect results Development & Technical Discussion
I agree it's possible, but it's highly inefficient - imagine if there were 10k t…
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n/a | gmaxwell | September 06, 2013, 08:25:49 AM |
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Has the NSA already broken bitcoin? Bitcoin Discussion
The certificate authority has no access to the website's keys.The evil thing CA'…
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n/a | gmaxwell | September 06, 2013, 07:34:21 AM |
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(Successful) Dictionary Attack Against Private Keys Bitcoin Discussion
I am sorry to drag this a bit off topic but seeing as I am not technically verse…
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n/a | gmaxwell | September 06, 2013, 07:29:27 AM |
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BFGminer thread lost and found Mining software (miners)
Sorry guys, I shouldn't moderate at 5am, I meant to split off a single offtopic…
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n/a | gmaxwell | September 06, 2013, 07:05:43 AM |
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listtransactions <count> <from> returns incorrect results Development & Technical Discussion
In addition, there is no way to page through the data as it stands because there…
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n/a | gmaxwell | September 06, 2013, 06:41:41 AM |
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What if dev-team is compromised? Bitcoin Discussion
Everybody could check the authenticity of their files or expertise analysis publ…
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n/a | gmaxwell | September 06, 2013, 06:39:34 AM |
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(Successful) Dictionary Attack Against Private Keys Bitcoin Discussion
To get rid of these junk "password testing outputs" don't create yet more output…
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n/a | gmaxwell | September 06, 2013, 06:35:55 AM |
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listtransactions <count> <from> returns incorrect results Development & Technical Discussion
I think this is works as designed as works as you'd want it to work.Since it ret…
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n/a | gmaxwell | September 06, 2013, 05:35:53 AM |
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Mac Bitcoin-Qt Transaction Bug Bitcoin Technical Support
In my opinion, this is a very serious bug and I don't understand why it has not…
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n/a | gmaxwell | September 06, 2013, 02:42:42 AM |
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Bitcoin-Qt / bitcoind version 0.8.4 released, fixes critical DoS vulnerability Bitcoin Discussion
Crashes on Synchronizing. Using Win7 pro, when i install and run the application…
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n/a | gmaxwell | September 06, 2013, 02:33:23 AM |
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Bitcoin-Qt / bitcoind version 0.8.4 released, fixes critical DoS vulnerability Bitcoin Discussion
Thank you for your assistance, I appreciate it immensely!The transaction looks f…
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n/a | gmaxwell | September 05, 2013, 04:23:02 PM |
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Bitcoin-Qt / bitcoind version 0.8.4 released, fixes critical DoS vulnerability Bitcoin Discussion
I upgraded to 0.8.4 on OS X 10.8 without issue, no DB corruption or whatnot, HOW…
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n/a | gmaxwell | September 05, 2013, 03:47:48 PM |
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For fun: the lowest block hash yet Development & Technical Discussion
SetBestChain: new best=000000000000000004ae693a1a8e740a33dd996c27ccc64217ed647e0…
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n/a | gmaxwell | September 05, 2013, 06:47:01 AM |
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(Successful) Dictionary Attack Against Private Keys Bitcoin Discussion
Ask the user for their full name, DOB, and/or any other personal information. So…
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n/a | gmaxwell | September 05, 2013, 06:26:41 AM |
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Feature Creep in Bitcoin (Payment Protocol) Development & Technical Discussion
This sentence can be interpreted in a lot of ways Well, that was intentional. I…
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n/a | gmaxwell | September 05, 2013, 05:52:19 AM |
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Feature Creep in Bitcoin (Payment Protocol) Development & Technical Discussion
If I were a member of the US Bitcoin Foundation and v0.9 will not have CoinContr…
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n/a | gmaxwell | September 05, 2013, 04:40:17 AM |
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What if dev-team is compromised? Bitcoin Discussion
Ok, how do you forcefully re-distribute coins that are buried more than 100 bloc…
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n/a | gmaxwell | September 05, 2013, 01:40:05 AM |
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Using the pubkey hash to generate other-chain addresses Development & Technical Discussion
If you think this is interesting, your mind is going to be blown when you start…
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n/a | gmaxwell | September 05, 2013, 01:15:08 AM |
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(Successful) Dictionary Attack Against Private Keys Bitcoin Discussion
Ok. I sent chocolate and Basketball. Give some more. No you didn't.
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n/a | gmaxwell | September 05, 2013, 12:32:23 AM |
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upgrade to 8.4 unnsuccessful due to windows error Bitcoin Technical Support
This sounds like someone who is trying to move leveldb files between architectur…
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n/a | gmaxwell | September 04, 2013, 11:07:11 PM |
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