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101

on: March 17, 2021, 06:13:33 AM

Quote from: NotATether on March 17, 2021, 05:31:59 AM Quote from: Stroncow on March 16, 2021, 07:59:49 PM I have a coin in my address. No coins were sent to anyone from this address. My public key was not published by the blockchain because it was not sent. My public address was not published by the blockchain because no coins were sent to another address. For example ; https://www.blockchain.com/btc/address/1GmKKaFEP4omAA9uKh1zoRCAb7caJB863k I am sorry for my English. Your particular address has one transaction https://www.blockchain.com/btc/tx/6abc9aca979647341389ca9ef69314fc1c01985d9c49574a2dfb83e867292798 where it is listed as an output. Blockchain.com shows the script used for each output and that script has the public key. In this case: Code: Index 1 Details Unspent Address 1GmKKaFEP4omAA9uKh1zoRCAb7caJB863k Value 0.40001014 BTC Pkscript OP_DUP OP_HASH160 aceb7b66651b4ba5d371223582efdc39968402c5 OP_EQUALVERIFY OP_CHECKSIG In this case your public key is aceb7b66651b4ba5d371223582efdc39968402c5. This is an incoming transaction, it contains a RIPEMD160 of the public key, which can be calculated from the address even without transactions. Only outgoing transactions reveal the public key. Quote from: fxsniper on March 17, 2021, 05:45:33 AM Can possible brute force public key hash to public key? Its is double hashed (sha256 and ripemd160), so that is impossible in practice, even if an algorithm for finding collisions in one of the hashes will be invented.

102

on: March 15, 2021, 05:58:35 PM

Quote from: Stroncow on March 15, 2021, 05:47:22 PM I know the specific range, but I don't know my public key, as no money was sent from my wallet address. Therefore, I cannot use the kangaroo software. If possible, my request from you; I want you to add the RIPEMD-160 focused option. You may be short on time or you may wish not to. I would like to know if this is possible. So can I run the software focused on RIPEMD-160? This is impossible, all known ECDLP algorithms works with public key. Without knowing the public key, the only possible option to find out the private key is bruteforce.

103

on: March 15, 2021, 12:39:44 PM

Quote from: CrunchyF on March 15, 2021, 09:52:24 AM Are my calculation are correct? To solve #120 you need about 2^60.5 group operations. If GPU speed is 4 billion op/s (~2^32), then it will takes 2^28.5 seconds to solve. 2^28.5 seconds is ~4393 days 4393 days / 8 GPUs = ~549 days to solve. There calculations on Kangaroo Github, that #120 will require ~2 months with 256x V100 (~2 billion op/s each)

104

on: March 12, 2021, 06:59:17 PM

Quote from: NotATether on March 12, 2021, 04:39:37 PM Quote from: WanderingPhilospher on March 06, 2021, 04:55:56 PM his program also subtracts the starting range so the actual starting range is always 0; so when a key is solved, it subtracts T-W then adds back original start range. So for 120 bit, it subtracts 800000....effectively reducing search range a full bit to 0 thru 7FFFFF....versus 800000...FFFFFF Underlined part I found; It's actually initializing the tames to 0 and the wilds to startingKey and then adds some random number to all of them. The rest of the operations are a mystery I can't find. In particular I can't find the range subtracted/added to a kangaroo, or T-W. Look at Kangaroo::InitRange() and Kangaroo::InitSearchKey() - range shifting magic is there.

105

on: February 26, 2021, 06:38:20 AM

Quote from: WanderingPhilospher on February 26, 2021, 06:17:05 AM Sooooo what other files do you need merged? All files created from the program contain DPs. What is the final file?? If you mean you want to save the progress of the Kangaroos path, you would have to have prompted that before running the program. I have several files contains kangaroos from multiple machines, that were running work on the CPU. I want to continue work with that kangaroos on one single machine with GPU, which able to control all that kangaroos. With original solver I can load only one file, the missing kangaroos are created and starts a new paths. So, I want to merge kangaroo's walks in one file, to continue their existing paths.

106

on: February 26, 2021, 05:48:45 AM

Quote from: NotATether on February 26, 2021, 05:09:47 AM There's merging functionally built in to Kangaroo, use `-wm file1 file2 destfile` for multiple files or `-wmdir dir destfile` to merge an entire directory full of work files (that it can recognize). This option merges only DPs and final file gets cleaned from kangaroos.

107

on: February 26, 2021, 05:06:03 AM

Is there any tool to merge kangaroos from two files? I have some files with a small number of kangaroos which has been ran long time on CPU, and want to continue working on them all together on another machine with GPU, is that possible?

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