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Volume 32 Issue 2
Aug.  2010
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Song Hui, Kong Xiang-wei, You Xin-gang. The Study of Security in Steganography Based on K-L Divergence[J]. Journal of Electronics & Information Technology, 2010, 32(2): 439-443. doi: 10.3724/SP.J.1146.2009.00142
Citation: Song Hui, Kong Xiang-wei, You Xin-gang. The Study of Security in Steganography Based on K-L Divergence[J]. Journal of Electronics & Information Technology, 2010, 32(2): 439-443. doi: 10.3724/SP.J.1146.2009.00142

The Study of Security in Steganography Based on K-L Divergence

doi: 10.3724/SP.J.1146.2009.00142
  • Received Date: 2009-02-04
  • Rev Recd Date: 2009-07-21
  • Publish Date: 2010-02-19
  • This paper presents a universality method for measure of security in steganography. According to the definition of K-L divergence and the properties of security in steganography, some limitations in Cachins definition of security are shown in the beginning. Besides the divergence of probability distributions between stego and cover, the sample size and the cardinality of the state set of random variable have great effect on security in steganography. Based on K-L divergence and hypothesis testing, an amended measure of security and a useful illation are presented. The result of examination can prove that the new measure of security is reasonable.
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