New verifiable protocol for member expansion in secret sharing schemes
Jianzhong Zhang · Computer Engineering and Applications Journal · 2007
This paper proposes a new verifiable secret redistribution protocol according to threshold secret sharing schemes that create n shares of the secret for n shares of old participants,the protocol only requires t(t is the threshold) participants’ cooperation and(3t+2) times broadcasting to generate and to distribute the new share.The validity of the proposed protocol has a higher security and is easier in key management and better in reliability and usability.