Date: Mon, 14 Nov 2016 18:49:00 +0100 From: magnum <john.magnum@...hmail.com> To: john-users@...ts.openwall.com Subject: Re: Brainwallets and cracking Blockchain hashes On 2016-11-11 23:18, Luis Rocha wrote: > Lately I've been reading about bitcoin and come across a very interesting > project called brainflayer by Ryan Castelllucci that was presented on > Defcon last year - https://www.youtube.com/watch?v=foil0hzl4Pg- . It's > essentially cracking the password of bitcoin brainwallets. Braiwallets > generate bitcoin addresses but the keys are generated with low entropy. > > So it’s possible to crack it just like JtR does for passwords. Was > wondering if JtR code would be faster on CPU than his implementation. I > know JtR already has support for raw-sha256 and ripmed-160 on Dynamic > formats. Maybe an interesting project would be to add the support for > secp256k1. > (...) I'm not going to look into this myself, but I opened an issue for it: https://github.com/magnumripper/JohnTheRipper/issues/2334 magnum
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