[ewillbefull]

At the time, the multi-party computation protocol could not scale to a large number of participants.

[justinjlynn]

Define large. In any case, I would rather have a protocol in which only one of the participants need successfully discard their local state for total security than n participants.

[ianmiers]

That was the case. If one of the 6 people completed the computation and discarded the results, the paramaters are secure.

Ideally it would have been more than 6 people, but that protocol really didn't scale to more than a handful of people.

[kbody]

You still would need just 1 participant, it's the computation part that would be open to any number participants in order to reduce the possibility of collusion.