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A CHEAT-PREVENTING VISUAL CRYPTOGRAPHY SCHEME BY REFERRING THE SPECIAL POSITION

机译:参考特殊位置的防伪视觉密码方案

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摘要

Visual cryptography (VC) is an effective and a secure scheme for sharing a secret image with the participants. VC scheme encodes the secret image into the shares. Each participant holds one share. When the participants stack a sufficient number of shares, the secret image can be decrypted through the human visual system. However, in some situations, cheating is possible in the VC scheme. The dishonest participant, called a cheater, may provide a fake secret image to cheat the other participants. In this paper, we proposed a cheating scheme to prove that the cheater can cheat other participants in Hu and Tzeng's cheat-prevention scheme [1]. To achieve cheat-prevention in VC, we propose a novel transformation scheme. The proposed scheme can recognize the fake share by stacking shares in a special position in the verification stage. In our scheme, we can improve Hu and Tzeng's cheat-preventing scheme and transform the existing VC scheme into the cheat-prevention scheme. Moreover, our scheme does not need an extra verification share which would reduce the burden of share management for each participant.
机译:视觉密码术(VC)是一种与参与者共享秘密图像的有效且安全的方案。 VC方案将秘密映像编码为共享。每个参与者持有一股。当参与者堆叠足够数量的份额时,可以通过人类视觉系统解密秘密图像。但是,在某些情况下,VC方案中可能存在作弊行为。不诚实的参与者称为作弊者,可能会提供伪造的秘密图片来欺骗其他参与者。在本文中,我们提出了一种作弊方案,以证明该作弊者可以欺骗Hu和Tzeng的防作弊方案[1]中的其他参与者。为了在VC中实现防止作弊,我们提出了一种新颖的转换方案。所提出的方案可以通过在验证阶段将股份堆叠在特殊位置来识别假股份。在我们的方案中,我们可以改进Hu和Tzeng的防欺诈方案,并将现有的VC方案转换为防欺诈方案。此外,我们的计划不需要额外的验证份额,这可以减轻每个参与者的份额管理负担。

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