In this paper, we attempt to construct practical secret sharing schemes, which scheme has smaller share size and can detect cheating with high probability. We de ne two secure ramp schemes, secure ramp scheme and strongly secure ramp scheme. Then, we propose two constructions of secure ramp scheme. These schemes both have small share size and the cheating can be detected with high probability. ...

A new grayscale image encryption algorithm based on , threshold secret sharing is proposed. The scheme allows a secret image to be transformed into n shares, where any shares can be used to reconstruct the secret image, while the knowledge of 1 or fewer shares leaves no sufficient information about the secret image and it becomes hard to decrypt the transmitted image. In the proposed scheme, th...

The constrained linear representability problem (CLRP) for polymatroids determines whether there exists a polymatroid that is linear over a specified field while satisfying a collection of constraints on the rank function. Using a computer to test whether a certain rate vector is achievable with vector linear network codes for a multisource network coding instance and whether there exists a mul...

In a (t,n) secret sharing scheme, a mutually trusted dealer divides a secret into n shares in such a way that any t or more than t shares can reconstruct the secret, but fewer than t shares cannot reconstruct the secret. When there is no mutually trusted dealer, a (n,t,n) secret sharing scheme can be used to set up a (t,n) secret sharing because each shareholder also acts as a dealer to decide ...

E-voting systems (EVS)are having potential advantages over many existing voting schemes. Security, transparency, accuracy and reliability are the major concern in these systems. EVS continues to grow as the technology advances. It is inexpensive and efficient as the resources become reusable. Fast and accurate computation of results with voter privacy is the added advantage. In the proposed sys...

The Secret Sharing scheme assumes long-lived shares. However the protection provided for such long lived and sensitive shares may be insufficient. The security in a system that is exposed to attacks and break-ins might become exhausted. The goal of the pro-active security scheme is to prevent the adversary from learning the secret or from destroying it. The Shamir’s Secret Sharing is pioneer me...

Secret image sharing deals with splitting confidential images into several shares and the original image can be reconstructed from the qualified subset of the shares. Secret sharing schemes are used in transmission and storage of private medical images and military secrets. Increased confidentiality and availability are the major achievements. We propose an efficient (2, 2) scheme and (2, 3) sc...

To address the issues and deficiencies of the traditional secret sharing scheme, we propose a rational secret sharing mechanism which applies game theory into secret sharing protocol. The paper mainly focuses on the secret sharing participants, who are rational, selfish and want to obtain the maximum benefit, how to detect cheat and take some punishable strategies to avoid being deceived under ...

In a (t, n) secret sharing scheme (SS), a dealer divides the secret into n shares in such way that any t or more than t shares can reconstruct the secret but fewer than t shares cannot reconstruct the secret. The multi-SS is an extension of the (t, n) SS in which shares can be reused to reconstruct multiple secrets. Thus, the efficiency of the multi-SS is better than the efficiency of the (t, n...

Multi-Level Secret Sharing Scheme for Mobile Ad-Hoc Networks P.V. Siva Kumar Department of Computer Science and Engineering, VNR VJIET, Hyderabad, India Email: [email protected] Dr. Rajasekhara Rao Kurra Sri Prakash College of Engineering, Tuni, India, email: [email protected]. in Appala Naidu Tentu and G.Padmavathi CRRao AIMSCS, University of Hyderabad Ca mp us , Hyderabad , I nd ia ...