Re: [cryptography] NIST Randomness Beacon

2013-11-11 Thread CodesInChaos
On Sun, Nov 10, 2013 at 9:54 AM, Andy Isaacson a...@hexapodia.org wrote: For example, suppose you use the low bits of the bitcoin blockchain hash. An attacker with 10% of the hash power could probabilistically attack such a system by chosing blocks with a specific value in those bits; This

Re: [cryptography] NIST Randomness Beacon

2013-11-11 Thread Warren Kumari
On Nov 10, 2013, at 3:15 AM, andrew cooke and...@acooke.org wrote: the idea of a service that provides data unknown before a certain date (like a photo of a recent newspaper) was suggested here - http://rachelbythebay.com/w/2012/08/29/info/ Ok, so the take a photo of the victim with

Re: [cryptography] NIST Randomness Beacon

2013-11-11 Thread Natanael
Proof-of-work, just like Bitcoin itself uses for hashing? See hashcash as well. Require that the message in question is hashed together with a random value, with an output that matches a given pattern. And specify that one part of the message has to be the hash of a Bitcoin block from the given

[cryptography] A Fierce Domain: Conflict in Cyberspace 1986 to 2012

2013-11-11 Thread John Young
A Fierce Domain: Conflict in Cyberspace 1986 to 2012: http://www.amazon.com/gp/product/B00E00QSN4/ref=cm_cr_rev_prod_title Excerpts: http://cryptome.org/2013/11/fierce-domain.htm ___ cryptography mailing list cryptography@randombit.net