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Author Topic: GPU based onion hash generator  (Read 9207 times)
cablepair
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October 12, 2012, 01:34:44 AM
 #21

I'd like to announce Scallion, my OpenCL vanity .onion address generator. It gets around 600MH/s on a 6870, allowing it to generate an 8-character prefix in just 15 minutes on average. It's written in C# and runs in both Linux (on Mono) and Windows.

Features:
1) Blindingly fast - 600MH/s vs. 2MH/s for shallot
2) Performs PKCS #1 v2.1 sanity checks via openssl's RSA_check_key function
3) FOSS - MIT licence
4) Support for 1024, 2048, or 4096 bit keys
5) Estimates time required to generate a key (on average)

Check out the Github page: http://www.github.com/lachesis/scallion
or skip straight to the binaries: https://github.com/downloads/lachesis/scallion/scallion-v0.9.zip

If you have any problems, reply to this thread or open an issue on github.

Nice work on this! is there a donation address? I would like to send one.
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lachesis
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October 13, 2012, 03:36:26 AM
 #22

I've just edited the post; here's a donation address: 1E82DM9mxvvfMfVAwpDANbkwXc2uWvQD1. I hope the original authors of this thread show up at some point as well. I've just tested on a 5770 - about 600MH/s.

Bitcoin Calculator | Scallion | GPG Key | WoT Rating | 1QGacAtYA7E8V3BAiM7sgvLg7PZHk5WnYc
SätöshiTable
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October 13, 2012, 04:07:10 AM
 #23

hope you get your bounties.

nb - are there any simple tutorials that can light me the path to gpu coding easily?

thanks!

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October 13, 2012, 04:18:04 AM
 #24

nb - are there any simple tutorials that can light me the path to gpu coding easily?
I'm not sure if there are any good top to bottom tutorials. We learned it through projects and documentation. In general, we simplify the GPU code as much as possible, both to make it fast and to avoid branches, loops, etc. Pick your favorite language, find OpenCL bindings, and run some Hello World tutorial. Then pick a project that's embarrassingly parallel (hash searches, noise generation, etc) - each result has no dependence on its neighbor. Read the documentation and pay attention to the memory model. There are a lot of hidden gotchas that can dramatically reduce your performance if you miss them.

Bitcoin Calculator | Scallion | GPG Key | WoT Rating | 1QGacAtYA7E8V3BAiM7sgvLg7PZHk5WnYc
ptshamrock
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November 15, 2012, 06:59:28 PM
 #25

ist it possible to create a web service for this so one could attach FPGA and let them calculate?


or use fpga instead of GPU ?

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November 16, 2012, 01:19:01 AM
 #26

I've just edited the post; here's a donation address: 1E82DM9mxvvfMfVAwpDANbkwXc2uWvQD1. I hope the original authors of this thread show up at some point as well. I've just tested on a 5770 - about 600MH/s.

Heh, couldn't find the right vanity address then?   Smiley

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November 17, 2012, 06:56:08 AM
 #27

this is sick. i've been wanting to learn how to obtain .onions tor addresses Smiley i too wouldn't mind throwing in
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