一种无可信中心动态秘密共享方案

现有的无可信中心动态秘密共享方案,尚未对新增成员秘密份额的动态更新问题作相关研究,在很大程度上降低了秘密共享系统的安全性.针对这一缺陷进行研究,提出了一种新的无可信中心动态秘密共享方案,在不暴露原秘密的情况下,成员可以协同交互,动态地更新各自的秘密份额,增加新成员,且新增成员也可以与其他成员协同参加下一轮秘密份额的动态更新.

Proactive secret sharing scheme without trusted party

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.