%0 Journal Article
%A CHANG Li-wei
%A JIN Lei
%A XING You-song
%A YANG Yi-xian
%A ZHENG Shi-hui
%T Verifiable Multi-Use Dynamic Threshold Large Secret Sharing Scheme
%D 2015
%R 10.13190/j.jbupt.2015.05.016
%J Journal of Beijing University of Posts and Telecommunications
%P 86-90
%V 38
%N 5
%X <p>For the efficiency and security problems of large secret sharing, a verifiable multi-use dynamic thres hold large secret sharing scheme was put forward. To improve the efficiency, the large secret is divided and represented as a matrix over smaller finite field, and the two-variable one-way function is also utilized; to enhance security, the thres hold modification method is slightly expanded and the elliptic curve discrete logarithm problem is employed. By analysis, this new scheme not only is high-efficiency, but also can prevent dishonest participants from cheating. Meanwhile, the secret shadows can always be kept secret and need not to be renewed in the process of reconstruction. Especially, when the mutual trust varies or the number of the participants belonging to an organization fluctuates, the threshold value will be adjusted by at least <em>t</em> credible participants in time.</p>
%U https://journal.bupt.edu.cn/EN/10.13190/j.jbupt.2015.05.016