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158 2017-04-01T18:51:17 <arubi> shot in the dark, did anyone ever set up oclvanitygen or related in a VM with pcie passthrough to a GPU? I can get gpu passthrough to the guest, I'm pretty certain (done this before a long time ago), my issue is getting oclvanitygen to use the gpu device. it lists two opencl devices, both at index '0:', the cpu /and/ the gpu are both index '0:', so no matter which I choose the cpu does the work. this is my output for getting the list of
159 2017-04-01T18:51:17 <arubi> devices: https://paste.ubuntu.com/24294492/
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161 2017-04-01T18:52:02 <arubi> alternatively, if anyone can explain how I can easily rent gpu compute for oclvanitygen, that would also be good :)
162 2017-04-01T18:53:56 <arubi> that space in the last line appears verbatim in the output
163 2017-04-01T18:54:12 <arubi> er, the space right in the beginning
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173 2017-04-01T20:23:22 <Victorsueca> arubi: if you're going to rent GPU power for that you should use split key generation then
174 2017-04-01T20:26:09 <arubi> Victorsueca, I wanna run it myself on some platform. I did that a while ago, rented a bunch of servers running gpu's, but I think it might be cheaper now with amazon etc, it's not for financial use, so no money is involved with that key
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177 2017-04-01T20:26:46 <arubi> not for identification either, really just looking for one of the many keys that fits what I wanna do :)
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181 2017-04-01T20:29:37 <Victorsueca> arubi: then somebody might as well generate it on his own computer and share the private key with you or you're searching for still some grade of security?
182 2017-04-01T20:30:41 <arubi> it's going to take a while to find a key with one computer. I calculated about a year's worth of searching with one gpu at 80 million keys a second
183 2017-04-01T20:30:58 <arubi> I don't mind letting someone else generate it for me, if they're up to it :)
184 2017-04-01T20:31:26 <Victorsueca> gee, what pattern are you searching for?
185 2017-04-01T20:33:05 <arubi> it's a pattern in the hash160, not the address, it's about 6-7 bytes of pattern
186 2017-04-01T20:33:43 <Victorsueca> in the ripemd thing you mean?
187 2017-04-01T20:33:58 <arubi> yep
188 2017-04-01T20:35:44 <arubi> hmm maybe more, now that I think about it it might take more than a year with just one..
189 2017-04-01T20:36:23 <arubi> need to go over this, hopefully I didn't miss a factor of x100 :), still it might be doable in a year, just more expensive
190 2017-04-01T20:38:20 <Victorsueca> maybe you need a rendering farm for this or something....
191 2017-04-01T20:39:07 <Victorsueca> or a ripemd160 ASIC + sah256 ASIC
192 2017-04-01T20:39:47 <arubi> I wanted to rent a rendering\compute resource, right, that's what I did a long time ago for something unrelated
193 2017-04-01T20:40:07 <arubi> I think amazon, google, offer gpu instances now, but I never tried
194 2017-04-01T20:41:04 <arubi> but first I wanna see that I can get oclvanitygen working, try to set up the hash160 pattern as it's just accepting addresses
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213 2017-04-01T23:27:33 <omarshibli> I'm trying to figure out a way to use BIP32 child key derivation with an arbitrary string rather than a number or 'm/*' path.
214 2017-04-01T23:27:33 <omarshibli> I came up with this method:
215 2017-04-01T23:27:33 <omarshibli> 1. for a given input compute the sha512 hash
216 2017-04-01T23:27:35 <omarshibli> 2. covert output to hex
217 2017-04-01T23:27:37 <omarshibli> 3. breakup the hex number into 32 chunks, each chunk 4 characters
218 2017-04-01T23:27:39 <omarshibli> 4. map each chunk to decimal
219 2017-04-01T23:27:41 <omarshibli> 5. join all decimals with '/'
220 2017-04-01T23:27:43 <omarshibli> 6. prepend 'm/0'
221 2017-04-01T23:27:45 <omarshibli> the output would be in this form: m/0/321/323/323...
222 2017-04-01T23:27:47 <omarshibli> Is this secure key derivation?
223 2017-04-01T23:27:54 <omarshibli> a
224 2017-04-01T23:27:58 <omarshibli> I'm trying to figure out a way to use BIP32 child key derivation with an arbitrary string rather than a number or 'm/*' path.
225 2017-04-01T23:27:58 <omarshibli> I came up with this method:
226 2017-04-01T23:27:58 <omarshibli> 1. for a given input compute the sha512 hash
227 2017-04-01T23:28:00 <omarshibli> 2. covert output to hex
228 2017-04-01T23:28:02 <omarshibli> 3. breakup the hex number into 32 chunks, each chunk 4 characters
229 2017-04-01T23:28:04 <omarshibli> 4. map each chunk to decimal
230 2017-04-01T23:28:06 <omarshibli> 5. join all decimals with '/'
231 2017-04-01T23:28:08 <omarshibli> 6. prepend 'm/0'
232 2017-04-01T23:28:10 <omarshibli> the output would be in this form: m/0/321/323/323...
233 2017-04-01T23:28:12 <omarshibli> Is this secure key derivation?
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