Title :
A verifiable secret sharing scheme without dealer in vector space
Author :
Qianqian Zhang ; Zhihui Li ; Xiong Li
Author_Institution :
Coll. of Math. & Inf. Sci., Shaanxi Normal Univ., Xi´an, China
Abstract :
Based on the (+, +) homomorphism property of shamir´s (t, n) secret sharing scheme, Harn and Lin proposed a (n, t, n) secret sharing scheme, in which each shareholder also acts as a dealer and the master secret was decided by the sub-secret of each shareholder. But this scheme is only suited to the threshold access structure. In this paper, we firstly define the (+, +) homomorphism property of secret sharing scheme in vector space. Then we extend the idea of (n, t, n) secret sharing scheme to vector space access structure, and define the secret sharing scheme without dealer in vector space and propose a verifiable secret sharing scheme without dealer in vector space based on the intractability of discrete logarithm. Compared with Harn and Lin´s (n, t, n) secret sharing scheme, the proposed scheme is more general and is applied more widely since it is suited to vector space access structure.
Keywords :
cryptography; discrete logarithm intractability; homomorphism property; master secret; shareholder; threshold access structure; vector space access structure; verifiable secret sharing scheme; Cryptography; Educational institutions; Equations; Information science; Logic gates; Vectors; Discrete logarithm; Homomorphism; Multiple dealers; Vector space; Verifiable secret sharing;
Conference_Titel :
Fuzzy Systems and Knowledge Discovery (FSKD), 2011 Eighth International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-61284-180-9
DOI :
10.1109/FSKD.2011.6019953