基于翻转操作的(2,n)异或图像分存方案

A(2,n)XOR-Based Secret Image Sharing Scheme Based on Flipping Operations

通过翻转操作来构造图像分存方案的新方法。所构造的分存方案将秘密图像以一种无需任何密码学知识的安全方式进行编码,且无需额外地隐藏处理过程就能生成有意义的分存图像。该分存方案没有像素膨胀,且不需要设计码本。秘密黑色像素的重构是完美的,所有的秘密黑色像素都能够被精准地恢复。首先利用翻转操作构造一个有意义的(2,2)方案,继而扩展出一个有意义的(2,n)方案。理论证明和实验结果表明了提出的分存方案正确和有效。

A new method for constructing XOR-based secret image sharing scheme by flipping operations. The proposed scheme encodes a secret image in a perfect secure way without any knowledge of cryptography. The meaningful shares can be directly generated by the proposed scheme without any extra data hiding process. Meanwhile, neither pixel expansion nor extra codebook is needed in the proposed scheme. Further, the reconstruction of black pixels is perfect, which means all the revealed pixels associated to secret black pixels are always black. First, a meaningful（2, 2） XOR-based image sharing scheme is constructed by flipping operations. Subsequently, a meaningful（2, n） scheme is extended as well. Theoretical analysis and experimental results demonstrate the correctness and feasibility of the proposed scheme.