Traditional secret sharing schemes involve complex computation. A visual secret sharing
(VSS) scheme decodes the secret without computation, but each shadow is m times as big …

Conventional visual secret sharing schemes are designed for a single secret image so it is
inefficient to generate numerous share images for multiple secret images simultaneously …

Visual cryptography scheme (VCS) is a kind of secret-sharing scheme which allows the
encryption of a secret image into n shares that are distributed to n participants. The beauty of …

In this paper, a method is proposed to construct an n-out-of-n visual secret sharing scheme
for gray-scale images, for short an (n, n)-VSS-GS scheme, which is optimal in the sense of …

Though the monochrome (black and white) visual cryptography has a very rich literature, a
very few papers have been published for the construction of general access structure. In this …

We propose a display technique that ensures security of visual information by use of visual
cryptography. A displayed image appears as a completely random pattern unless viewed …

We propose a weak security notion for visual secret sharing (VSS) schemes. Under such a
weak security notion, VSS schemes are designed to be secure against attackers' eyesight …

This paper provides a new method for construction of the generating (or basis) matrices of
the (t, n)-threshold visual secret sharing scheme ((t, n)-VSSS) for any n≥ 2 and 2≤ t≤ n …

In (k, n) visual cryptographic schemes (VCS), a secret image is encrypted into n pages of
cipher text, each printed on a transparency sheet, which are distributed among n …

It is known that for any general access structure, a secret sharing scheme (SSS) can be
constructed from an (m, m)-threshold scheme by using the so-called cumulative map or from …