Optical threshold secret sharing scheme based on basic vector operations and coherence superposition
Optical threshold secret sharing scheme based on basic vector operations and coherence superposition
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DOI：
10.1016/j.optcom.2014.11.098
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发表时间：
2015-04
影响因子：
2.4
通讯作者：
Xiaopeng Deng;Wei Wen;Xianwu Mi;Xuewen Long
中科院分区：
文献类型：
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作者：
Xiaopeng Deng;Wei Wen;Xianwu Mi;Xuewen Long
据我们所知，我们首次提出了一种基于基本向量运算和相干叠加的（2,n）阈值方案的简单光学秘密图像共享算法。首先利用基本向量运算将待共享的秘密图像分割成阴影图像；在重建阶段，可以通过记录任意两幅阴影图像的相干叠加强度来检索秘密图像。与现有加密技术仅局限于信息加密相比，本文提出的方法既能实现信息加密，又能实现秘密共享，进一步保证了秘密信息的安全性和完整性，防止了权力的集中和滥用。数值结果验证了该方法的可行性和有效性。
We propose, to our knowledge for the first time, a simple optical algorithm for secret image sharing with the (2,n) threshold scheme based on basic vector operations and coherence superposition. The secret image to be shared is firstly divided intonshadow images by use of basic vector operations. In the reconstruction stage, the secret image can be retrieved by recording the intensity of the coherence superposition of any two shadow images. Compared with the published encryption techniques which focus narrowly on information encryption, the proposed method can realize information encryption as well as secret sharing, which further ensures the safety and integrality of the secret information and prevents power from being kept centralized and abused. The feasibility and effectiveness of the proposed method are demonstrated by numerical results.