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 …

In this paper, we construct a lattice based (t, n) threshold multi-stage secret sharing (MSSS)
scheme according to Ajtai's construction for one-way functions. In an MSSS scheme, the …

This paper studies the methods for changing thresholds in the absence of secure channels
after the setup of threshold secret sharing schemes. First, we construct a perfect (t, n) …

Abstract (t, n) threshold secret sharing (SS) is an important cryptographic primitive in which a
secret is divided into n shares, and then any t or more shareholders can exchange shares to …

In a threshold scheme, the sensitivity of the secret as well as the number of players may
fluctuate due to various reasons, eg, mutual trust may vary or the structure of the players' …

A secret sharing scheme typically requires secure communications in each of two
distribution phases:(1) a dealer distributes shares to participants (share distribution phase); …

Abstract A (t, n)-threshold scheme with secure secret reconstruction, or a (t, n)-SSR scheme
for short, is a (t, n)-threshold scheme against the outside adversary who has no valid share …

We consider the problem of increasing the threshold parameter of a secret-sharing scheme
after the setup (share distribution) phase, without further communication between the dealer …

Secret sharing is a cryptographic technique used in many different applications such as
cloud computing, multi‐party computation and electronic voting. Security concerns in these …

After any distribution of secret sharing shadows in a threshold changeable secret sharing
scheme, the threshold may need to be adjusted to deal with changes in the security policy …