<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class=""><br>
> - Please allow M=1. From a usability point of view it makes sense to allow<br>
> the user to select 1 share if that is what he wants.<br>
<br>
</div>How does that make sense? Decomposing a key/seed into 1 share is functionally equivalent to dispensing with the secret sharing scheme entirely.<br>
<div class=""><br></div></blockquote><div><br></div><div>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).</div>
<div><br></div><div>Less complexity & more freedom of choice.</div><div><br></div></div></div></div>