A new threshold changeable secret sharing scheme based on the Chinese Remainder Theorem

A general (t, n) secret sharing (SS) scheme with fixed threshold allows a secret to be shared without considering the time dynamic nature of the security environment. In this paper, we propose a threshold changeable secret sharing scheme whose threshold can be changed in an integer interval [t, t′] without updating the shares. In this scheme, a different threshold can be activated at any time through the public broadcast channel. At the heart of...