《计算机应用研究》|Application Research of Computers

基于Paillier的可分离密文域可逆信息隐藏

Separable reversible data hiding in encrypted domain based on Paillier

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作者 林文兵,张敏情,郭帅,孔咏骏
机构 武警工程大学 网络与信息安全武警部队重点实验室,西安 710086
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文章编号 1001-3695(2021)10-050-3161-05
DOI 10.19734/j.issn.1001-3695.2021.01.0065
摘要 为了提高信息嵌入率和实现直接解密后无损恢复原始图像,提出了基于Paillier的可分离密文域可逆信息隐藏算法。首先图像拥有者利用Paillier算法对图像进行加密后上传云服务器;而后信息隐藏者在云服务器中生成三个零矩阵,通过构造尺寸大小为2×2的填充分块进行信息嵌入;接收方根据不同的密钥,实现信息提取与图像解密的可分离。实验结果表明,相比于传统的可逆嵌入算法,该算法直接解密后不会存在失真的现象,并且最大嵌入率可达到2 bpp。
关键词 信息安全; 可逆信息隐藏; Paillier加密; 云计算
基金项目 国家自然科学基金资助项目
本文URL http://www.arocmag.com/article/01-2021-10-050.html
英文标题 Separable reversible data hiding in encrypted domain based on Paillier
作者英文名 Lin Wenbing, Zhang Minqing, Guo Shuai, Kong Yongjun
机构英文名 Key Laboratory of Network & Information Security under Chinese People Armed Police Force(PAP),Engineering University of PAP,Xi'an 710086,China
英文摘要 In order to improve the information embedding rate and realize the lossless recovery of the original image after direct decryption, this paper proposed a separable reversible data hiding algorithm in encrypted domain based on Paillier. Firstly, the image owner used the Paillier algorithm to encrypt the image and uploaded it to the cloud server. Then the information hider generated 3 zero matrices in the cloud server and embedded the information through the constructed padding blocks with a size of 2×2. According to different keys, the receiver realized the information extraction and image decryption could be separated. The experimental results show that compared with the traditional reversible embedding algorithm, the proposed scheme will not be distorted after directly decryption and the maximum embedding rate can reach 2 bpp.
英文关键词 information security; reversible data hiding; Paillier encryption; cloud computing
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收稿日期 2021/1/8
修回日期 2021/2/22
页码 3161-3165
中图分类号 TP309.7
文献标志码 A