[cryptography] Scrypt hardware optimized miner

Fabio Pietrosanti (naif) - lists lists at infosecurity.ch
Mon Jun 29 03:40:56 EDT 2015


Now that Scrypt has been used by cryptocurrency a new generation of
hardware optimized miner (that can be converted to password-cracking)
went out https://www.hashcoins.com/buy-scrypt-miners/ .

The questions are:

a) Is scrypt always safe enough?

b) Which scrypt parameters should be tweaked in order to make it *much
more* difficult to the hardware minire?

c) Is the approach of chaining multiple hashing systems (to require the
attacker to implement multiple hardware-specialized system) valuable
like done by some crypto-currency?
The assumption is that if i need to buy 10 different specialized-ASIC to
attack a specific crypto, it's obviously going to cost more.


-- 
Fabio Pietrosanti (naif)
HERMES - Center for Transparency and Digital Human Rights
http://logioshermes.org - https://globaleaks.org - https://tor2web.org -
https://ahmia.fi


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