Proactive secret sharing scheme without trusted party
一种无可信中心动态秘密共享方案

Some existing secret sharing schemes have not researched the proactive refreshment of new members' secret shares, which greatly reduced the security of the secret sharing system. Against this defect researched, this paper put forward a new proactive secret sharing scheme without trusted part, without exposing the original secret, all members can interact collaboratively, refresh their secret shares proactively, and add new members. What's more, new members could also proactively refresh their secret shares with other members at next time period.