Secret shared multiple-image encryption based on row scanning compressive ghost imaging and phase retrieval in the Fresnel domain
Secret shared multiple-image encryption based on row scanning compressive ghost imaging and phase retrieval in the Fresnel domain
复制标题
DOI：
10.1016/j.optlaseng.2017.04.005
复制
发表时间：
2017-09-01
影响因子：
4.6
通讯作者：
Chen, Hongyi
中科院分区：
文献类型：
--
作者：
Li, Xianye;Meng, Xiangfeng;Chen, Hongyi
提出了一种基于行扫描压缩重影成像、（t，n）门限秘密共享和菲涅耳域相位恢复的多图像加密方法。在加密过程中，对目标图像进行小波变换和Arnold变换后，首先利用桶检测器检测出密文矩阵。基于一种（t，n）门限秘密共享算法，将行扫描压缩鬼像成像中的测量密钥分解为两对子密钥，并分别在相位恢复方案的输入平面和变换平面2中使用两个固定像素值的POM密钥进行重构;而变换平面1中的另一个POM密钥可以通过每个明文图像的迭代编码来生成和更新。在每次迭代中，目标图像充当输入平面中的输入幅度约束。在解密过程中，通过测量密钥再生、压缩算法重构、小波逆变换和菲涅耳变换，可以成功地解密每一幅拥有全部正确密钥的明文图像。理论分析和数值仿真均验证了该方法的可行性。
A multiple-image encryption method is proposed that is based on row scanning compressive ghost imaging, (t, n) threshold secret sharing, and phase retrieval in the Fresnel domain. In the encryption process, after wavelet transform and Arnold transform of the target image, the ciphertext matrix can be first detected using a bucket detector. Based on a (t, n) threshold secret sharing algorithm, the measurement key used in the row scanning compressive ghost imaging can be decomposed and shared into two pairs of sub-keys, which are then reconstructed using two phase-only mask (POM) keys with fixed pixel values, placed in the input plane and transform plane 2 of the phase retrieval scheme, respectively; and the other POM key in the transform plane 1 can be generated and updated by the iterative encoding of each plaintext image. In each iteration, the target image acts as the input amplitude constraint in the input plane. During decryption, each plaintext image possessing all the correct keys can be successfully decrypted by measurement key regeneration, compression algorithm reconstruction, inverse wavelet transformation, and Fresnel transformation. Theoretical analysis and numerical simulations both verify the feasibility of the proposed method.