JISE

[1] [2] [3] [4] [5] [6] [7] [8] [9] [10]

Journal of Information Science and Engineering, Vol. 18 No. 3, pp. 367-372

A Note on Efficient Color Visual Encryption

Ching-Nung Yang
Department of Computer Science and Information Engineering
National Dong Hwa University
Hualien, 974 Taiwan
E-mail: cnyang@mail.ndhu.edu.tw

Rijmen and Preneel [1] proposed the colored VSS (Visual Secret Sharing) scheme, which only needs m sub pixels to represent m! colors. However, the number of possible colors does not really reach m! but only about m!/2 for large m. In this note, we will show this error and also give a correction for the Rijmen-Preneel scheme.

Keywords: visual cryptography, secret sharing scheme, visual secret sharing scheme, color visual cryptography, 2-out-of-2 VSS scheme

Retrieve PDF document (JISE_200203_02.pdf)