使用基于视觉密码术的多个解码掩码安全显示

Hirotsugu Yamamoto, S. Suyama
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引用次数: 1

摘要

利用基于视觉密码的多个解码掩码,实现了信息的安全显示。解码掩码用于解密的密钥。使用物理密钥可以防止计算机病毒和间谍软件等网络攻击。为了保护物理密钥不被窃取,解码掩码的数量增加了。已经构造了编码集来加密二进制图像,以便在显示的图像和多个解码掩码之间共享秘密图像上的信息。密钥在多个用户之间共享。只有当所有共享掩码都覆盖在显示图像前面时,才表示密钥。通过在液晶显示器(LCD)上显示图像和在液晶显示器前面的解码掩模,演示了光学解密和观看区域的限制。被观看的图像是安全的,不会在观看者身后窥视。
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Secure display by use of multiple decoding masks based on visual cryptography
A securing information display has been realized by use of multiple decoding masks based on visual cryptography. The decoding masks are used for the key for decryption. Use of physical keys are secure against cyber attacks including computer virus and spy ware. In order to secure the physical keys against theft, the number of decoding masks is increased. Code sets have been constructed to encrypt a binary image so that information on a secret image is shared between a displayed image and multiple decoding masks. The key is shared between plural users. The secret is represented only when all shared masks are overlaid in front of the displayed image. Optical decryption and limitation of the viewing zone have been demonstrated with a displayed image shown on a liquid crystal display (LCD) and decoding masks in front of the LCD. The viewed image is secure against prying eyes behind the viewer.
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