Reversible data hiding for encrypted signals by homomorphic encryption and signal energy transfer
Reversible data hiding for encrypted signals by homomorphic encryption and signal energy transfer
复制标题
通过同态加密和信号能量传输对加密信号进行可逆数据隐藏
DOI：
10.1016/j.jvcir.2016.09.005
复制
发表时间：
2016-11-01
影响因子：
2.6
通讯作者：
Weng, Jian
中科院分区：
文献类型：
--
作者：
Wu, Xiaotian;Chen, Bing;Weng, Jian
本文提出了一种加密信号的可逆数据隐藏技术，它能完美地重构直接解密的信号。利用能量传递方程将原始图像中的每个单元分解为三个分量，并对每个分量进行Paillier同态加密。通过操纵加密信号将附加比特隐藏到加密图像中。最后，直接解密可以很好地恢复原始图像。嵌入的比特也被无损提取。由于直接解密单元的值与原始单元的值相同，因此该方法获得了最佳的视觉质量和提高的嵌入率。实验结果和比较表明，所提出的方法的有效性和优势。此外，该方法还可以扩展到编码多媒体，进一步丰富了应用场景。(C)2016 Elsevier Inc. All rights reserved.
Reversible data hiding for encrypted signals with prefect reconstruction of directly decrypted signals is introduced in this paper. Each unit in the original image is separated into three components by energy transfer equation, and each component is encrypted by Paillier homomorphic encryption. Additional bits are concealed into the encrypted image by manipulating the encrypted signals. Finally, the original image can be perfectly recovered when direct decryption is applied. The embedded bits are lossless extracted as well. Optimal visual quality and improved embedding rate are obtained by the proposed approach, since the value of the directly decrypted unit is the same as the original one. Experimental results and comparisons are demonstrated to illustrate the effectiveness and advantages of the proposed method. Moreover, the proposed method can be extended to deal with encoded multimedia, which further enriches the application scenarios. (C) 2016 Elsevier Inc. All rights reserved.