[Cryptography] NIST Randomness Beacon

james hughes hughejp at mac.com
Sun Nov 10 14:37:19 EST 2013


On Nov 10, 2013, at 12:54 AM, Andy Isaacson <adi at hexapodia.org> wrote:
> The Beacon is a potentially useful service.  

Agreed.

> Folks have implemented
> similar semantics by, for example, hashing the DJIA closing value of a
> given date (see http://xkcd.com/426/).


Not enough entropy, Two possibilities… 

Take the closing of the entire DJI (the list, not the average) in some canonical order on a certain day, the result will both have enough entropy and certainly be far harder to “influence”. 

The chain that you get back from Guardtime is interesting in that it is influenced by many around the world (potentially including the requester) -and- is backwards verifiable. (I am not affiliated with Guardtime, but find it an interesting technology.)


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