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The period of Arnold transformation is a key parameter, which affects its application effectiveness in the fields of image encryption, digital watermark, information hiding, etc. However, the previous research results on the period of discrete two-dimensional Arnold transformation are very rough estimation and lack of practical application value. By analyzing the relationship between the image order...
With the development of network technique, the research of information security technique is becoming more and more important. In this paper, we proposed a new image encryption and steganography scheme. First, the secret message is encrypted through the combination of a new gray value substitution operation and position permutation which makes the encryption system strong. And then the processed secret...
Digital image scrambling is an effective tool in data hiding, digital watermarking, and digital image encryption. In order to evaluate the image scrambling performance effectively, a new normalized measure of image scrambling degree based on the grey level difference and the general information entropy of the scrambled image is proposed. This new method measures the image scrambling degree from both...
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