可证明安全的可擦除脆弱数字水印  

Provably secure erasable fragile watermarking

作　　者：童伟 朱岩[2] 

机构地区：[1]青海大学计算机技术与应用系,青海西宁810016 [2]北京科技大学计算机与通信工程学院,北京100083

出　　处：《计算机工程与设计》2018年第3期679-683,共5页Computer Engineering and Design

基　　金：国家自然科学基金项目(U1636104;61472032)

摘　　要：针对图像原始性认证的脆弱数字水印安全性问题,提出一种可擦除脆弱水印构造方案。该方案可被证明具有错误检测的最大似然估计性、签名信息不可预测性、抗篡改攻击的不可伪造性,进一步提高可擦除脆弱数字水印的可证明安全性。实验结果证明,该方案在认证的过程中能够逐个像素地恢复出作品的原貌,不会丢失脆弱水印的精确认证功能。Aiming at the security problem of fragile watermarking,an erasable fragile watermarking scheme with provable security for image authentication was proposed.This scheme was proved secure from three properties,including maximum likelihood estimation of error detection,unpredictability of hiding signature,and unforgeability against tamper attacks.These researches further improved the security of erasable fragile watermarking from the provable security perspective.Experimental results show that the original digital media can be recovered pixel-by-pixel during the verification process of the proposed scheme without impairing the accuracy authentication of fragile watermarking.

关 键 词：媒体认证 数字水印 可擦除 脆弱水印 可证明安全 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]