摘要
A secret sharing scheme permits a secret to be shared among participants in such a way that only qualified subsets of participants can recover the secret. Secret sharing is useful in management of cryptographic keys. Based on identity, we analyze the secret sharing scheme among weighted participants. Then we present a dynamic scheme about secret sharing among weighted participants. At last, we analyze the secret sharing scheme among weighted participants, which can make all weighted participants verifiable and dynamic.
基金
The research is supported by Research Funds of Information Security and Secrecy Laboratory of Beijing Electronic Science ＆： Technology Institute under Grant No. YZDJ0712, partially by National Basic Research Program under Grant No. 2004CB318000, and Beijing Municipal Natural Science Foundation under Grant No. 406：3040.
