A New Visual Multi-Secrets Sharing Scheme by Random Grids

Cryptography

Chang, Joy Jo-Yi¹ 

关键词: visual secret sharing;    r;    om grids;    image encryption;   

DOI  :  10.3390/cryptography2030024

学科分类：工程和技术（综合）

来源: mdpi

【 摘 要 】

In (2, 2)-visual secret sharing (VSS) schemes, a common type of (k, n)-threshold VSS schemes, secret information can be decoded directly through only two shares by using a human vision system. Several studies have analyzed methods of simplifying the decoding process and refining encoding to pass more secret images through two identical shares. However, limited secret images are retrieved, and the quality of the recovered images is low. This paper proposes an advanced (2, 2)-VSS scheme that can embed N secret images into two rectangular shares. Compared with other related VSS schemes, more secret images can be encrypted and the distortion is adjustable in the proposed scheme, yielding more flexibility in theory and practice.

【 授权许可】

CC BY