摘要： 基于椭圆曲线密码体制提出一个动态的多秘密共享方案。该方案具有参与者子秘密定期更新的功能，可以动态更新需要共享的秘密，灵活地增加或删除参与者成员，能够在一次秘密共享过程中共享多个秘密。通过使用椭圆曲线上的签密算法，使分发者和参与者之间的通信无需安全信道，从而保证安全性和实用性。

关键词: 多秘密共享, 动态多秘密共享, 定期更新, 签密算法, 椭圆曲线离散对数问题

Abstract: This paper presents a dynamic multi-secret sharing scheme based on Elliptic Curves Cryptosystem(ECC). The sub-secrets of participants can update periodically. The sharing secrets and a participant can be added or deleted freely. This scheme is a multi-use verifiable secret sharing scheme, which can share several secrets in one secret sharing process. A secure channel between participants and the dealer does not need because of using signcryption algorithm on elliptic curve in the scheme. It is a secure and practical scheme.

Key words: multi-secret sharing, dynamic multi-secret sharing, periodical update, signcryption algorithm, Elliptic Curve Discrete Logarithm Problem(ECDLP)

中图分类号: 

• TP309