Visual Cryptography
作者： M. Naor , A. Shamir
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摘要: In this paper we consider a new type of cryptographic scheme, which can decode concealed images without any computations. The scheme is perfectly secure and very easy to implement. We extend it into visual variant the k out n secret sharing problem, in dealer provides transparency each one users; them see image by stacking their transparencies, but k-1 gain no information about it.
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