摘要
针对公众在网上交流时文字信息被窃取的问题,提出一种文字加密并隐藏于彩色图像的方法。将文字信息的Unicode码编码为20位二进制,并以7位以下的数字作为密码,以此为参数构造可逆运算置乱信息二进制编码,实现加密,利用LSB算法将加密二进制数据嵌入蓝光通道,实现信息隐藏。经实验仿真和数据分析表明,该方法易于实现,采用本方法能在彩色图像中隐藏大量文字信息而不显著影响图像的质量,且密图有一定的抗破解能力。
Aiming at the problem of information theft when the public communicates online,a method of information encryption and transmission hidden in color images is proposed.The Unicode of text information is extended to 20-bit binary coding,then enter the number less than 7 bits as the key,and the key’s binary value is used to construct an invertible function to scramble the information binary coding for the encryption.Then the encrypted binary data is added to the blue-light channel based on LSB algorithm to realize information hiding.With the experiment and data analysis,this paper reveals that this method is easy to implement and the scheme can hide lots of sound information in color images without significantly affecting the quality of the imagery,and the secret image has certain anti-cracking ability.
作者
徐畅凯
徐文华
XU Changkai;XU Wenhua(Dept.of Basic Courses,Pass College of Chongqing Technology and Business University,Chongqing 401520,China)
出处
《软件工程》
2020年第1期19-23,共5页
Software Engineering
