计算机技术与发展2011，Vol.21Issue(2)：151-154,4.
一种基于Hash函数的脆弱水印算法
Fragile Image Watermarking Algorithm Based on Hash Function
摘要
Abstract
At present, the flaws of the airspace fragile image watermarking algorithm are the iow security and lack of effective resistance to the vector attacks. To solve the problem, a fragile watermarking scheme is presented for tamper-proof digital authentication and content tamper tesfification. Firstly, dividing the image into blocks of 8×8, using the Logistic chaotic map generates the block watermark;Then create the fragile image watermarking based on image-blocking by Hash function; Finally, embedding the watermarking signals into the 2 bit LSB of the blocks of image. Experimental results indicate that the fragile image watermarking algorithm based on Hash function can not only ensure the security in system, but also efficiently resist the vector quantization attacks.关键词
脆弱水印/Hash函数/混沌映射/完整性认证/篡改定位分类
信息技术与安全科学引用本文复制引用
黄子龙,张政保,文家福,李占德..一种基于Hash函数的脆弱水印算法[J].计算机技术与发展,2011,21(2):151-154,4.基金项目
河北省科技计划基金项目(05213579) （05213579）
