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[Crypto] Compact Confidential Transactions for Bitcoin Development & Technical Discussion
Quote from: 〚38〛(If we add to the protocol, as we really should, that Verarefus…
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n/a | johoe | June 29, 2015, 04:18:40 PM |
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[Crypto] Compact Confidential Transactions for Bitcoin Development & Technical Discussion
Didn't I just break your smallness proof?Nope. This is a long time peer-reviewed…
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n/a | johoe | June 29, 2015, 02:47:36 PM |
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[Crypto] Compact Confidential Transactions for Bitcoin Development & Technical Discussion
1. I think I found a problem in the zero-knowledge proof of F=x^2*G for a small…
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n/a | johoe | June 29, 2015, 09:29:20 AM |
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[Crypto] Compact Confidential Transactions for Bitcoin Development & Technical Discussion
#!/bin/pythonfuzzvalue = 7474747474747474747474747474747474747474747474747474747…
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n/a | johoe | June 29, 2015, 05:01:19 AM |
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[Crypto] Compact Confidential Transactions for Bitcoin Development & Technical Discussion
Updated paper to 768 bit curve for now, which brings square roots up to x1@220 a…
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n/a | johoe | June 29, 2015, 04:56:26 AM |
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[Crypto] Compact Confidential Transactions for Bitcoin Development & Technical Discussion
So I think you should make the square roots at least about 250 bits, so that usi…
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n/a | johoe | June 29, 2015, 04:18:24 AM |
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[Crypto] Compact Confidential Transactions for Bitcoin Development & Technical Discussion
I think that your square-roots have too few bits.In your current scheme x1 has 1…
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n/a | johoe | June 28, 2015, 10:04:34 AM |
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Find all raw headers that have same nonce Development & Technical Discussion
BTW, here is a list of repeated nonces (format is block depth:nonce hash)Code:10…
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n/a | johoe | June 19, 2015, 08:59:41 AM |
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SOLVED [Why are my generated transactions non-canonical?] Development & Technical Discussion
The pubkey in the scriptSig looks also strange:0440af8583e795691debf6331605a444a…
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n/a | johoe | June 17, 2015, 06:17:06 AM |
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Elements Project testnet sidechain alpha released Development & Technical Discussion
What happens with the reorg proof? If someone claims an output from testnet and…
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n/a | johoe | June 14, 2015, 01:51:40 PM |
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Why is the block header 80 bytes, not 128 bytes (= two SHA-256 blocks)? Development & Technical Discussion
Neither is a block and neither is padded.Sorry for the confusion, but "blocks" i…
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n/a | johoe | June 14, 2015, 01:19:54 PM |
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When is op_return scheduled to be 80 bytes? Development & Technical Discussion
IMO 128-150 bytes would be better. Increased fees could be applied of course.sha…
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n/a | johoe | June 13, 2015, 06:27:25 AM |
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Increase the network speed vs block size without a fork - Posible ? Development & Technical Discussion
I think most software rely on a clock and if you trick the clock 10 minutes runs…
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n/a | johoe | June 12, 2015, 10:38:34 AM |
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When is op_return scheduled to be 80 bytes? Development & Technical Discussion
I'm pretty sure that it is going to stay at 40 bytes and not change back. There…
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n/a | johoe | June 12, 2015, 03:42:16 AM |
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An alternative to spamming the Blockchain Development & Technical Discussion
[...] and then need two months to deploy an emergency hard fork if something bad…
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n/a | johoe | June 11, 2015, 01:24:38 AM |
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Scaling Bitcoin with Subchains Development & Technical Discussion
One problem I see with sidechains is how do we freeze the money in the main chai…
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n/a | johoe | June 10, 2015, 03:04:07 PM |
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An alternative to spamming the Blockchain Development & Technical Discussion
Quote from: unamis76 link=topic=1086436.msg11584973#msg11584973 date=1433959615…
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n/a | johoe | June 10, 2015, 02:10:48 PM |
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An alternative to spamming the Blockchain Development & Technical Discussion
If we want to test how Bitcoin behaves if the blocks are nearly full under reali…
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n/a | johoe | June 10, 2015, 08:58:50 AM |
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[ESHOP launched] Trezor: Bitcoin hardware wallet Hardware wallets
Lol, dont worry, i update my machines frequently, i just dont wanto to update so…
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n/a | johoe | May 25, 2015, 05:23:35 PM |
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Can dynamic accumulators be used to store UTXOs Development & Technical Discussion
Are there any other group besides RSA with this property? AFAIK for elliptic cu…
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n/a | johoe | May 25, 2015, 01:27:39 PM |
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Can dynamic accumulators be used to store UTXOs Development & Technical Discussion
AFAIK These accumulator schemes require a spent coins list that grows forever; a…
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n/a | johoe | May 20, 2015, 05:00:48 PM |
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Can dynamic accumulators be used to store UTXOs Development & Technical Discussion
I read the zerocoin white paper again and while trying to understand the dynamic…
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n/a | johoe | May 18, 2015, 02:38:53 PM |
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UTXO reduction by trx-to-self? Development & Technical Discussion
similar to malleability it changes the transaction ids of your valid inputsit ma…
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n/a | johoe | May 18, 2015, 02:07:59 PM |
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UTXO reduction by trx-to-self? Development & Technical Discussion
Besides being a hard fork, there are some undesired effects.similar to malleabil…
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n/a | johoe | May 13, 2015, 08:25:48 AM |
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Clarifying BIP62 Zero-padded number pushes Development & Technical Discussion
BIP 62 only protects scriptSig. The other parts are not malleable by third part…
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n/a | johoe | April 30, 2015, 04:50:32 AM |
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How to verify the validity of a transaction Development & Technical Discussion
You don't need RNy to check validity.Compute txHash/s * G + r/s * (X,Y), which s…
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n/a | johoe | April 30, 2015, 04:28:37 AM |
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Full node? Development & Technical Discussion
Full node? by johoe
you can run core on a vm and set static ip address there, just a simply solution…
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n/a | johoe | April 26, 2015, 05:55:21 AM |
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Extracting the Private Key from a TREZOR ... with a 70 $ Oscilloscope Development & Technical Discussion
Going by the pulse widths, it seems like a few cents worth of power filtering ca…
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n/a | johoe | April 23, 2015, 05:35:49 AM |
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What if somebody makes an ASIC to crack SHA-256 hashes with Brute force? Development & Technical Discussion
We are talking about Private Key generations... Can some guru out there have a l…
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n/a | johoe | February 19, 2015, 01:02:21 PM |
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[ESHOP launched] Trezor: Bitcoin hardware wallet Hardware wallets
Anybody know any tool for signing raw TX using Trezor?Hmm, maybe electrum can do…
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n/a | johoe | February 16, 2015, 08:35:05 AM |
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Can we Vanitygem BIP32? Development & Technical Discussion
Is it possible to vanitygen a BIP32 hierarchical address?As the first answer say…
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n/a | johoe | February 08, 2015, 08:47:01 AM |
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What is a Bitcoin soft fork? (in laymen's terms) Development & Technical Discussion
Changing the max block size from 1MB to 0.1MB is a softfork, because it makes pr…
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n/a | johoe | February 05, 2015, 05:23:19 PM |
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I thought trxid is unique Development & Technical Discussion
Blockchain.info only shows 50btc in the address:https://blockchain.info/address/…
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n/a | johoe | February 05, 2015, 05:06:49 PM |
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Protecting Against Bitcoin Malware Development & Technical Discussion
If you want to protect against malware you also have to make sure that the bitco…
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n/a | johoe | January 31, 2015, 09:14:34 PM |
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Best client for importing multiple private keys? Development & Technical Discussion
As amaclin and Dabs on this thread already said, you need to add a third paramet…
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n/a | johoe | January 31, 2015, 04:44:05 AM |
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Reused R values again Development & Technical Discussion
two questions:1. Is it a problem is the same R value is used for two different a…
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n/a | johoe | January 30, 2015, 05:54:10 PM |
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Best client for importing multiple private keys? Development & Technical Discussion
did anyone finally figure out a way to do this in bulk without triggering rescan…
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n/a | johoe | January 29, 2015, 08:26:24 PM |
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bitcoind for synology nas (ARM) Development & Technical Discussion
I am interested in continue this topic because I try to install a Bitcoin node i…
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n/a | johoe | January 29, 2015, 06:50:42 AM |
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Signing order for m-of-n transactions Development & Technical Discussion
Can anyone explain why the signing order is important? i.e. Why can the nodes no…
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n/a | johoe | January 28, 2015, 01:07:41 PM |
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Block size Development & Technical Discussion
Block size by johoe
Interesting thread. If I understand correctly regarding the 1MB hardfork, if the…
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n/a | johoe | January 24, 2015, 05:11:20 AM |
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Bitcoin Core soft-fork proposal for strict DER enforcing Development & Technical Discussion
The proposal looks good for me.Since, BIP 62 (dealing with malleability) is ment…
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n/a | johoe | January 23, 2015, 04:56:59 AM |
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Fake block timestamps can cause a temporary fork? Development & Technical Discussion
If someone finds a block on top of the new block with the faked timestamp all mi…
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n/a | johoe | January 17, 2015, 02:23:11 PM |
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vanitygen Development & Technical Discussion |
n/a | johoe | January 17, 2015, 08:41:21 AM |
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vanitygen Development & Technical Discussion |
n/a | johoe | January 16, 2015, 08:11:57 AM |
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vanitygen Development & Technical Discussion |
n/a | johoe | January 16, 2015, 07:34:25 AM |
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vanitygen Development & Technical Discussion |
n/a | johoe | January 16, 2015, 05:33:48 AM |
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vanitygen Development & Technical Discussion |
n/a | johoe | January 15, 2015, 04:06:33 PM |
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Which kind of attack could be executed if SHA-256 would be broken? Development & Technical Discussion
Suppose there is a collision attack. An evil attacker may trick you into signin…
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n/a | johoe | January 15, 2015, 03:41:24 PM |
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Which kind of attack could be executed if SHA-256 would be broken? Development & Technical Discussion
First, it is unlikely that SHA-256 will be seriously broken in the next year or…
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n/a | johoe | January 15, 2015, 12:15:51 PM |
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block raw decode Development & Technical Discussion
have a easy way to get the raw of each tx?i miss a byte like "tx lengh" after th…
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n/a | johoe | January 14, 2015, 04:03:14 PM |
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stuck tx Bitcoin Technical Support |
n/a | johoe | January 14, 2015, 11:40:30 AM |
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What if the Trezor server got compromised? Hardware wallets
AFAIK, the Trezor has a hardware random device so the random numbers it produces…
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n/a | johoe | January 12, 2015, 02:30:30 PM |
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Exposing private key by signing the same message twice? Development & Technical Discussion
If you can guess some linear dependency between k_1 and k_2, you have three line…
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n/a | johoe | January 12, 2015, 11:20:55 AM |
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Exposing private key by signing the same message twice? Development & Technical Discussion
Grrr, hhanh00 was faster. He wrote essentially the same...Only, if the k values…
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n/a | johoe | January 12, 2015, 11:03:58 AM |
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Exposing private key by signing the same message twice? Development & Technical Discussion
Thanks for breaking my brain.The short answer to the original question is that s…
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n/a | johoe | January 12, 2015, 10:34:05 AM |
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Can you create a Bitcoin address manually? Development & Technical Discussion
5. Use the ECDSA point doubling formula and point addition formula on the genera…
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n/a | johoe | January 12, 2015, 08:25:03 AM |
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Please answer 3 technical questions Development & Technical Discussion
1. Assuming silicon ASICs have now approached their limit, how much energy (in W…
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n/a | johoe | January 10, 2015, 04:54:25 PM |
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Cold storage and bad RNG Development & Technical Discussion
I did not mean to say that private key was obtained from public key. By weak RNG…
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n/a | johoe | January 06, 2015, 05:01:58 PM |
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bitcoinjs-lib and related repos are not 100% RFC6979 compliant (only 99.999...%) Development & Technical Discussion
I got confused. As I said earlier, r = 0 isn't the same as the point at infinity…
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n/a | johoe | January 03, 2015, 09:09:40 AM |
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bitcoinjs-lib and related repos are not 100% RFC6979 compliant (only 99.999...%) Development & Technical Discussion
BTW there is no point on the curve with x=0, but r=0 is still possible because 0…
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n/a | johoe | January 03, 2015, 07:44:09 AM |
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bitcoinjs-lib and related repos are not 100% RFC6979 compliant (only 99.999...%) Development & Technical Discussion
I think Trezor has the same issue.https://github.com/trezor/trezor-crypto/blob/9…
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n/a | johoe | January 03, 2015, 04:09:46 AM |
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bitcoinjs-lib and related repos are not 100% RFC6979 compliant (only 99.999...%) Development & Technical Discussion
Nice find. I think Trezor has the same issue. There are probably more.Looking…
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n/a | johoe | January 02, 2015, 01:20:56 PM |
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Reused R values again Development & Technical Discussion
Sorry for my ignorance, but has this issue been resolved on BC.I's end?Yes, ther…
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n/a | johoe | December 28, 2014, 03:25:24 PM |
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Reused R values again Development & Technical Discussion
I'm the security researched who "caused" all of this by reporting a related bug…
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n/a | johoe | December 28, 2014, 09:22:30 AM |
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Reused R values Electrum
Electrum uses python-ecdsa for signing, and python-ecdsa uses RFC 6979 determini…
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n/a | johoe | December 23, 2014, 05:21:52 PM |
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Reused R values again Development & Technical Discussion
johoe can we start using bc.i again now?Are their issues resolved?This particula…
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n/a | johoe | December 22, 2014, 07:50:10 PM |
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Reused R values again Development & Technical Discussion
@vivalibre: if your address still has money in it, then it was not exposed by th…
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n/a | johoe | December 22, 2014, 06:13:44 PM |
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Reused R values again Development & Technical Discussion
My guess is that someone created a new address and found 5.9 BTC. He transferred…
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n/a | johoe | December 20, 2014, 05:55:40 AM |
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Can we decide on RFC 6979 or an equilvalent before we have more issues? Development & Technical Discussion
I think we don't have to decide on RFC6979 altogether. Every client can decide…
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n/a | johoe | December 20, 2014, 05:17:37 AM |
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Reused R values again Development & Technical Discussion
105.9 BTC stolen by 1M77fUCzQrmY8jHRRgpzDVPAK5eQ31bwxZThey were sent to this add…
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n/a | johoe | December 19, 2014, 05:04:20 PM |
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Reused R values again Development & Technical Discussion
The Blockchain.info issue should be fixed by now. There are still coming some b…
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n/a | johoe | December 19, 2014, 09:04:30 AM |
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Reused R values again Development & Technical Discussion
I copied the JavaScript code and changed it into a Java program so that it would…
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n/a | johoe | December 18, 2014, 12:08:48 PM |
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Reused R values again Development & Technical Discussion
I just extracted the important parts from the javascript file. I understood fro…
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n/a | johoe | December 18, 2014, 09:55:50 AM |
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Reused R values again Development & Technical Discussion
I solved this by try and error. But now I get it. key.length is 0 so "% key.le…
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n/a | johoe | December 18, 2014, 07:51:21 AM |
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Reused R values again Development & Technical Discussion
QuoteBecause line 29 was missing from the original source code file (rng.js), th…
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n/a | johoe | December 17, 2014, 03:54:06 PM |
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What happened to my coins on block chain? Is this normal? Bitcoin Technical Support
The 1Huq... address is mine , but as you can see I don't have the money anymore.…
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n/a | johoe | December 17, 2014, 03:39:31 PM |
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Reused R values again Development & Technical Discussion
I just noticed that I accidently swiped 7041 Satoshi from an address not related…
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n/a | johoe | December 17, 2014, 12:32:38 PM |
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Reused R values again Development & Technical Discussion
Strange things happening...https://blockchain.info/address/1NEBmytquNcVKcQtVbVYC…
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n/a | johoe | December 17, 2014, 09:46:40 AM |
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Reused R values again Development & Technical Discussion
There have been again some bad transactions this night, including this big one f…
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n/a | johoe | December 17, 2014, 05:18:44 AM |
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Reused R values again Development & Technical Discussion
Interesting observation from that paper I don't remember ever seeing before:Quot…
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n/a | johoe | December 16, 2014, 03:16:08 PM |
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Reused R values again Development & Technical Discussion
Hello,I'm pretty sure that the owner of 1MKSW... broke the RNG:https://blockchai…
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n/a | johoe | December 16, 2014, 01:24:42 PM |
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Reused R values again Development & Technical Discussion
QuoteWhat can you say about this recent transaction?https://blockchain.info/tx/d…
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n/a | johoe | December 16, 2014, 10:36:21 AM |
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Reused R values again Development & Technical Discussion
The bug that is present since September is different. It is still going on and…
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n/a | johoe | December 16, 2014, 07:55:48 AM |
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Blockchain.info banned my Ip? Service Discussion
Not sure if this is just a coincidence. But my IP was blocked yesterday. Of co…
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n/a | johoe | December 15, 2014, 04:58:36 PM |
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Reused R values again Development & Technical Discussion
Are you sure this is incredible incompetence? The transactions are no reusing th…
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n/a | johoe | December 15, 2014, 03:53:35 PM |
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Reused R values again Development & Technical Discussion
I omitted most of the important details of how to do the attack (e.g. how the RN…
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n/a | johoe | December 15, 2014, 07:42:59 AM |
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Reused R values again Development & Technical Discussion
Can you rephrase your questions and tell me what you intend to do and then how y…
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n/a | johoe | December 15, 2014, 04:55:56 AM |
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Reused R values again Development & Technical Discussion
Another 500 keys cracked I have computed more random values, but still have not…
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n/a | johoe | December 14, 2014, 06:06:02 PM |
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Reused R values again Development & Technical Discussion
Okay, most is swept, I think less than a 1 BTC remaining Wrong this address alo…
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n/a | johoe | December 14, 2014, 03:48:46 PM |
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Reused R values again Development & Technical Discussion
Okay, most is swept, I think less than a 1 BTC remaining I can assure you that…
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n/a | johoe | December 14, 2014, 01:57:58 PM |
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Reused R values again Development & Technical Discussion
I may give more details on the rng later. At the moment there is still too much…
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n/a | johoe | December 14, 2014, 12:51:32 PM |
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Reused R values again Development & Technical Discussion
Seems to me that johoe can do that nobody else can on this planet.https://blockc…
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n/a | johoe | December 14, 2014, 12:22:25 PM |
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Reused R values again Development & Technical Discussion
Also now that there is no coins in those addresses, how did you got the private…
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n/a | johoe | December 13, 2014, 07:28:17 PM |
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Reused R values again Development & Technical Discussion
@bcearl: I used my own tools. Basically finds repeated R values as I have writt…
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n/a | johoe | December 13, 2014, 05:37:47 AM |
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Reused R values again Development & Technical Discussion
Do you think the majority of the reused "R' values issue has been resolved? If s…
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n/a | johoe | December 12, 2014, 12:46:40 PM |
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Reused R values again Development & Technical Discussion
Hello,thanks for all the warm words. I very much appreciated them.I have to say…
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n/a | johoe | December 11, 2014, 02:20:54 PM |
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Reused R values again Development & Technical Discussion
The money has been returned to blockchain.info. Please write to blockchain supp…
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n/a | johoe | December 09, 2014, 07:57:10 PM |
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Reused R values again Development & Technical Discussion
I just want to say that I contacted the blockchain.info support, but I haven't h…
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n/a | johoe | December 09, 2014, 05:56:09 AM |
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Reused R values again Development & Technical Discussion
this: http://www.reddit.com/r/Bitcoin/comments/2onm5r/blockchaininfo_security_di…
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n/a | johoe | December 08, 2014, 12:38:41 PM |
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Reused R values again Development & Technical Discussion
QuoteI took the liberty of saving some funds before they got swiped by others.Is…
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n/a | johoe | December 08, 2014, 08:07:14 AM |
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