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Title: recovering bitcoin private keys ? Post by: virtualmaster on May 08, 2013, 06:30:56 AM Recovering bitcoin private keys possible or it is a fake post ?
http://www.nilsschneider.net/2013/01/28/recovering-bitcoin-private-keys.html Title: Re: recovering bitcoin private keys ? Post by: twobits on May 08, 2013, 06:40:24 AM Recovering bitcoin private keys possible or it is a fake post ? http://www.nilsschneider.net/2013/01/28/recovering-bitcoin-private-keys.html Interesting... the relevant part is: Quote Why did this work? ECDSA requires a random number for each signature. If this random number is ever used twice with the same private key it can be recovered. This transaction was generated by a hardware bitcoin wallet using a pseudo-random number generator that was returning the same “random” number every time. This is a known implementation issue, and why people make a big deal out of random sources and entropy. Seems there is a flawed implementation floating around? I wonder what this hardware wallet is exactly. Title: Re: recovering bitcoin private keys ? Post by: kost on May 08, 2013, 07:21:03 AM If they used old OpenSSL in Debian for generating random numbers, it's possible:
http://en.wikinews.org/wiki/Predictable_random_number_generator_discovered_in_the_Debian_version_of_OpenSSL LOL |