[cryptography] The Wandering Music Band

andrew cooke andrew at acooke.org
Wed Jan 7 11:48:44 EST 2015


On Thu, Jan 08, 2015 at 03:33:24AM +1100, Dave Horsfall wrote:
> On Wed, 7 Jan 2015, realcr wrote:
> 
> > I am looking for some crypto primitive to solve a problem I have.
> 
> [...]
> 
> I guess, if it is really a band application as opposed to something more 
> abstract, it boils down to what you mean by "descendants".  At least one 
> founding member left?  Are the offspring of same OK?  Some musos can be 
> really purist about this.

i'd suggest that you can assume that there is always a majority of members who
can be trusted.  so you need something that can follow a trusted majority,
even if they include no-one who is original.

fwiw, when searching for previous work, this kind of problem is often referred
to as "the ship of theseus" (preserving identity of the whole when all parts
are replaced) - http://en.wikipedia.org/wiki/Ship_of_Theseus

andrew


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