抗打印攻击的二维码隐写研究

RESEARCH ON TWO-DIMENSIONAL CODE STEGANOGRAPHY FOR ANTI-PRINT ATTACK

近年来二维码技术的迅速发展以及二维码应用的普及,使得二维码可被打印在多种物体上进行信息传输。目前抗打印的二维码隐写算法鲜见报道,因此利用二维码进行信息隐藏成为了研究趋势。使用二维码中常见的PDF417码和QR码作为信息隐藏的载体,进行抗打印的二维码空域隐写实验研究。对于PDF417码,通过改变PDF417码相邻的条和空宽度进行隐藏信息的嵌入和提取。对于QR码,在特定位置微调QR码的结构,通过改变黑色方块的高度以实现隐藏信息的嵌入和提取。实验验证该两种方法的鲁棒性均较好,安全性高,具有良好的抗打印攻击能力,可适用于隐藏信息的电子和打印传输。

dimensional transmission： dimensional are common In recent years, the rapid development of two-dimensional code technology and the popularity of two- code applications, making two-dimensional code can be printed on a variety of objects for information At present, the two-dimensional code steganography of anti-printing is rarely reported, so the use of two- code for information hiding has become a research trend. In this paper, PDF417 code and QR code, which in two-dimensional code, are used as code steganalysis. For PDF417 code, by changing information hiding vectors to carry out anti-printing two-dimensional the PDF417 code adjacent to the width of the black bars and white bars, embedded and extracted hidden information. For the QR code, this paper fine-tunes the structure of QR code in the specific location, by changing the height of the black box to achieve the hidden information embedded and extracted Experiments show that the two methods are robust, safe, and have good anti-print attack ability, which can be applied to hide the information of electroni-c and print transmission.