An efficient threshold multi-group-secret sharing scheme

作者：Li Hui Xian^*; Pang Liao Jun; Cai Wan Dong

来源：2nd International Conference on Fuzzy Information and Engineering (ICFIE 2007), 2007-05-13 to 2007-05-16.

• secret sharing
• threshold
• multi-group-secret sharing
• Chinese Remain Theorem

In this paper, a novel threshold multi-group-secret sharing scheme is proposed based on Chan et al.'s scheme. Multiple groups of secrets are packed into a group of large secrets by using the Chinese Remain Theorem, and then shared by constructing a secret polynomial such that its coefficients are those large secrets. In the proposed scheme, the secret distribution procedure is needed only once to share multiple groups of secrets, which reduces the amount of computation largely. Moreover, each group of secrets has a different threshold access structure and includes a distinct number of secrets. Analysis results show that the proposed scheme needs fewer public values and is higher in efficiency and easier in implementation than existing schemes, especially for sharing many groups of secrets, which makes it more practical in practice.

• 出版日期2007
• 单位西北工业大学