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(2, 2) Threshold Robust Visual Secret Sharing Scheme for QR Code Based on Pad Codewords

机译:(2,2)基于PAD码字的QR码的阈值鲁棒可视密钥共享方案

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Quick response (QR) code has been used widely because of its advantages, such as, fast reading, error correction, and encoding multiple types of data. More and more researches on the combination of QR and visual cryptography have emerged, but there are few robust visual secret sharing scheme (VSS) for QR code. In this paper, we propose a robust (2, 2) threshold VSS for QR code based on pad codewords. We utilize the bug of no checking on the pad codewords when encoding the QR code, we encode initial shadows shared with secret image as pad codewords of cover QR code images to generate QR code shadows. In this way, the decoding results of shadow QR code images are identical with those of cover QR code images, no doubt arises when shadow images are exposed to the public channel. While a certain degree of damage and noise appearing in the shadow images, the secret can still be revealed, so the scheme is robust, which is important for practice. The experimental results demonstrate the effectiveness and robustness of our scheme.
机译:快速响应(QR)代码已被广泛使用,因为其优点,例如快速读取,纠错和编码多种类型的数据。越来越多地研究了QR和视觉加密组合的研究,但QR码几乎没有强大的视觉秘密共享方案(VSS)。在本文中,我们基于焊盘码字的QR码提出了一种鲁棒(2,2)阈值VSS。我们利用在编码QR码时禁止焊盘码字的错误的错误,我们编码与秘密图像共享的初始阴影作为盖QR码图像的垫码字,以生成QR码阴影。以这种方式,阴影QR码图像的解码结果与盖QR码图像相同,当暗影图像暴露于公共信道时,毫无疑问。虽然暗影图像中出现的一定程度的损坏和噪声,但仍然可以揭示秘密,因此该方案是强大的,这对于实践很重要。实验结果表明了我们计划的有效性和稳健性。

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