Cloud service is a natural choice to store and manage the exponentially produced images.
Data privacy is one of the most concerned points in cloud-based image services. Reversible …

Visual cryptography scheme (VCS) serves as an effective tool in image security. Size-
invariant VCS (SI-VCS) can solve the pixel expansion problem in traditional VCS. On the …

An almost unexplored research topic in visual secret sharing (VSS), ie, sharing different
visual secrets among various groups, is investigated in this article. Generally, multiple …

Recently, three visual cryptography schemes with t-error-correcting capability (VCSs-t EC)
were introduced for preventing the shadows carrying additional information from being …

In this research, we consider the evolving threshold access structure, denoted as, for size
invariant visual cryptography scheme (SIVCS). The so-called threshold indicates the number …

Most visual cryptography schemes (VCSs) are condition-oriented which implies their
designs focus on satisfying the contrast and security conditions in VCS. In this paper, we …

A systematic investigation of evolving visual cryptography scheme (EVCS) is carried out in
this paper. The evolving scheme, denoted as, differs from the threshold in that it permits an …

Visual cryptography scheme (VCS) naturally provides a solution for protecting a secret
image in a group environment. However, most of the existing VCSs proposed so far only …

The visual cryptography scheme (VCS) distributes a secret to several images that can
enhance the secure transmission of that secret. Quick response (QR) codes are widespread …

Since the beginning of time, humans have had secrets, and individuals have always been
curious to learn about them. People transmit digital data to convey secret in-formation in a …