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A new two-level information protection scheme based on visual cryptography and QR code with multiple decryptions
یک برنامه محافظت از اطلاعات دو سطح جدید مبتنی بر رمزنگاری بصری و کد QR با رمزگشایی های متعدد-2019 Nowadays, Quick Response (QR) code has been used in many fields due to its advantages, such as reliability,
high-speed scanning and large data capacity. However, embedding the privacy information into the
QR code lacks adequate security protection. In this paper, a new two-level information protection scheme
is designed based on visual cryptography and QR code. Using any standard QR reader device or software,
the public-level information can be read out directly from the shares. Moreover, the privacy-level information
can be decoded by three different decryptions, which are suitable to non-computation with relative
difference 1/4, lightweight computation with relative difference 1/2 and common computation
environments with relative difference 1, respectively. Since the proposed scheme keeps the advantages
of visual cryptography and QR code, it differs from the related schemes with low computational complexity,
robustness against deformations, and high payload. The effectiveness of the proposed scheme has
been proved theoretically. Experimental results and analysis demonstrate that the proposed scheme
can protect two-level information with multiple decryptions, and has many benefits compared with
the previous schemes. Keywords: Two-level information protection | Visual cryptography | QR code | Multiple decryptions |
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