Tagged visual cryptography is a new type of visual cryptography, which can hide tags into each generated common share to provide users with supplementary information. The existing tagged visual cryptography has some problems such as poor visual quality, pixel expansion and design of encryption matrices. Therefore, this paper proposes an improved tagged visual cryptography based on XOR decryption. In encryption process, the scheme embeds tagged information in the generated common share; and in decryption process, XOR operation is used to recover the secret image. The scheme decrypts the image without pixel expansion problem, and the requirement of design of encryption matrices. At the same time, it can adjust the probability of embedded tagged information. Compared with the existing tagged visual cryptography, the image recovered by the scheme is clearer.
XU Mengqi, Lü Donghui, REN Yanli
. Tagged Visual Cryptography Scheme Based on XOR Decryption[J]. Journal of Applied Sciences, 2019
, 37(4)
: 469
-480
.
DOI: 10.3969/j.issn.0255-8297.2019.04.004
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