1Password GPU brute-force with 3M hash/s

Re:1Password GPU brute-force with 3M hash/s by quinndupont on Tuesday April 16, 2013 @06:14PM (#5561284)

I think ajross is (mostly) right, ASICs can be re-purposed for SHA256 calculations. To what extent they have baked in a whole round of SHA256 is a good question, they may just be developed around very parallel XORs (which is why some GPUs are faster at BTC mining than others—they have built in XOR logic).

I do believe seeing that (the mythical) Butterfly Labs intends on releasing software for all sorts of other parallel high-performance applications (or some kind of driver/API type of thing), but I could be hallucinating.

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Re:1Password GPU brute-force with 3M hash/s by sliverstorm on Tuesday April 16, 2013 @06:16PM (#5561301)

I think ajross is (mostly) right, ASICs can be re-purposed for SHA256 calculations.

I know what you mean, but I think you should be more specific in your statement. Bitcoin mining ASICs might be re-purposable. Not all ASICs.

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Re:1Password GPU brute-force with 3M hash/s by quinndupont on Tuesday April 16, 2013 @06:18PM (#5561316)

Good point. An ASIC could be completely non-repurposable. The commonly-available (soon) BTC ASICS should be damn good at SHA256 cracking, maybe other XOR-related applications too.

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