On Tuesday, 22 April 2014, at 10:39 am, Jan Møller wrote: > On Tue, Apr 22, 2014 at 10:29 AM, Matt Whitlock <b...@mattwhitlock.name>wrote: > > On Tuesday, 22 April 2014, at 10:27 am, Jan Møller wrote: > > > > > - Please allow M=1. From a usability point of view it makes sense to > > > > > allow > > > > > the user to select 1 share if that is what he wants. > > > > > > > > How does that make sense? Decomposing a key/seed into 1 share is > > > > functionally equivalent to dispensing with the secret sharing scheme > > > > entirely. > > > > > > > I agree that it may look silly to have just one-of-one share from a > > > technical point of view, but from an end-user point of view there could be > > > reasons for just having one piece of paper to manage. If M can be 1 then > > > the software/hardware doesn't have to support multiple formats, > > > import/export paths + UI (one for SIPA keys in one share, one for HD > > > seeds > > > in one share, one for SIPA keys + HD seeds in multiple shares). > > > > > > Less complexity & more freedom of choice. > > > > Alright. It's a fair argument. Do you agree with encoding M using a bias > > of -1 so that M up to and including 256 can be encoded in one byte? > > Necessary Shares = M+1, not a problem > > I would probably encode N-of-M in 1 byte as I don't see good use cases with > more than 17 shares. Anyway, I am fine with it as it is.
Encoding bias of M changed to -1, and test vectors updated: https://github.com/whitslack/btctool/blob/bip/bip-xxxx.mediawiki ------------------------------------------------------------------------------ Start Your Social Network Today - Download eXo Platform Build your Enterprise Intranet with eXo Platform Software Java Based Open Source Intranet - Social, Extensible, Cloud Ready Get Started Now And Turn Your Intranet Into A Collaboration Platform http://p.sf.net/sfu/ExoPlatform _______________________________________________ Bitcoin-development mailing list Bitcoin-development@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bitcoin-development
