sipa changed the topic of #bitcoin-wizards to: This channel is for discussing theoretical ideas with regard to cryptocurrencies, not about short-term Bitcoin development | http://bitcoin.ninja/ | This channel is logged. | For logs and more information, visit http://bitcoin.ninja
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<nullc>
hi
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<fkinglag>
anybody know of some podcast websites?
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<ThomasV>
NicolasDorier: I found this old post where you mention identicons
<ThomasV>
I'm thinking about creating an identicon for each wallet, from its xpub
<ThomasV>
this in order to mitigate the dumb attack where a users wallet is replaced by the attackers walet
<gmaxwell>
won't attackers just upgrade and do a tiny amount of search to produce a 'close enough' identicon?
<gmaxwell>
(I believe this was demonstrated for the ssh picture thing)
<gmaxwell>
(or I suppose replace the identicon too)
<ThomasV>
gmaxwell: generated when the wallet is opened
<ThomasV>
but yes, they could try to produce a close enough one, if they have access to the victim's computer long enough
<ThomasV>
the "replace your victim's wallet" attack does not require any skill at the moment
<ThomasV>
it might be worth making it harder
<ThomasV>
gmaxwell: another way to deal with it would be to request password on startup, *without* encrypting the wallet
<gmaxwell>
oh wow, you mean a _really_ dumb attack. Although you said it clearly I was still thinking of "replace addresses in clippboards or displayed on websites"
<gmaxwell>
maybe the identicon might work there, but I fear that kind of attack is just so easily upgraded.
<gmaxwell>
e.g. replace the wallet software with one that shows the old image.
<ThomasV>
gmaxwell: it seems to be the #1 attack on electrum wallets at the moment. low hanging fruit.
<ThomasV>
attacks on software have yet to be confirmed
<phantomcircuit>
gmaxwell, the ssh picture thing is indeed super easy to brute force
<phantomcircuit>
something that looks verrrry similar
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<waxwing>
talking of identicons, i always thought it would be an interesting idea to develop a graphical representation of hash fn outputs, such that somehow the symmetry and therefore beauty of the image increases with embedded PoW
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<Taek>
phantomcircuit, gmaxwell: do you have a link to the ssh picture thing?
<Taek>
I've thought a picture might help with key identification for a while too
<Taek>
your ability to find features in a picture is a lot better than your abilities to find an out-of-place word in a set of 15
<Taek>
I was thinking more in the context of anti-evil-maid boot though, where it's more realistic that the attacker hasn't seen the original picture
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<Pr0t3us>
WARNING: Poloniex is stealing deposits selectively. DO NOT deposit coins on Poloniex and if you have also had coins stolen from Poloniex.com please PM me.
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<fkinglag>
wtf is this about polo stealing?
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<maaku>
scammer
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