Abstract
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.
Supported by the National Natural Science Foundation of China (Grant Number: 61602491) and the Key Program of the National University of Defense Technology (Grant Number: ZK-17-02-07).
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Acknowledgment
The authors would like to thank the anonymous reviewers for their valuable comments. This work is supported by the National Natural Science Foundation of China (Grant Number: 61602491) and Key Program of National University of Defense Technology.
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Tan, L., Lu, Y., Yan, X., Liu, L., Chen, J. (2020). (2, 2) Threshold Robust Visual Secret Sharing Scheme for QR Code Based on Pad Codewords. In: Yang, CN., Peng, SL., Jain, L. (eds) Security with Intelligent Computing and Big-data Services. SICBS 2018. Advances in Intelligent Systems and Computing, vol 895. Springer, Cham. https://doi.org/10.1007/978-3-030-16946-6_50
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DOI: https://doi.org/10.1007/978-3-030-16946-6_50
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