摘要： 为解决实际应用中同时涉及参与者权重和数据保密级别的问题，基于中国剩余定理提出一个参与者有权重的多等级秘密共享方案。该方案在考虑参与者权重的情况下，利用多秘密共享的思想，通过一次共享过程便可并行恢复多个不同等级的秘密。在方案的执行过程中，每个参与者的秘密份额可以重用，同时能有效地防止外部攻击和内部欺骗。分析结果表明，该方案是一个安全、实用的秘密共享方案。

关键词: 秘密共享, 多等级, 权重, 中国剩余定理

Abstract: To solve the problems in practical application involving both weighted participants and date security level, based on Chinese remainder theorem, a hierarchical secret sharing scheme among weighted participants is proposed. It takes participants’ weight into consideration and recovers many different-level secrets in one time by using the idea of multi-secret sharing. In the recovery phase, participant’s secret shadow is allowed to reuse, and the scheme can efficiently prevent attacking from external attackers and cheating among participants. Analysis result shows that the scheme is a safe and practical sharing scheme.

Key words: secret sharing, hierarchical, weighted difference, Chinese remainder theorem

中图分类号: 

• TP309