QRcodes are often used in commodities trade, one of its applications is covering credible authentication information to avoid customer buying forged goods. This paper presents an applicable scheme which proposes an idea on how the QRcode data interacts with a customer and the interaction between qrcodes and the server. RSA and DES were used to encrypt qrcode to ensure the security of data. Besides, a scheme which enables decrypting qrcode and storing keys is presented and textbooks are served as client-server in this research. By comparing the effect to the security of qrcode when using DES or RSA only, it shows that in this way the cost of forging goods is significantly increased, which makes the rapid anti-fake identification possible.
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