一种动态的多秘密共享方案

Dynamic Multi-secret Sharing Scheme

基于Shamir的秘密共享体制和RSA加密算法的安全性,提出一种动态的门限秘密共享方案。在该方案中可以动态添加或删除参与者以及更新多重秘密,无需重新分发子秘密,参与者的秘密份额由每个参与者自己选取,其秘密份额的信息可以通过公开的信道发送给秘密分发者,在秘密恢复过程中,每个参与者能够验证其他参与者是否进行了欺骗。

This paper proposes a dynamic multi-secret sharing scheme based on the safety of Shamir secret sharing scheme and RSA encryption algorithm. The participants can be dynamically joined or deleted and multi-secrets are dynamically renewed without re-distributing the sub-secrets. The sub-secrets of participants are chosen by himself or herself and are submitted to secret dealer by using public channel. In the recovering phase, each participant is allowed to check whether another participant provides the true information.