计算机应用研究
計算機應用研究
계산궤응용연구
APPLICATION RESEARCH OF COMPUTERS
2014年
11期
3482-3485,3489
,共5页
软件水印%水印恢复%TDPPCT结构%线程关系%汉明纠错码%鲁棒性
軟件水印%水印恢複%TDPPCT結構%線程關繫%漢明糾錯碼%魯棒性
연건수인%수인회복%TDPPCT결구%선정관계%한명규착마%로봉성
software watermarking%watermark recovery%TDPPCT structure%threads relation%Hamming code%robustness
针对动态图水印数据率低、水印信息遭到攻击后不易恢复的问题,提出了一种水印信息可恢复的软件水印方案。该方案结合了动态图水印和线程水印技术。为了使水印信息可恢复,在水印的嵌入过程中,利用设计的一种特殊的动态图结构表示水印信息,并在程序的线程关系中隐藏动态图的纠错码信息。提取水印图的过程中一旦检测到水印图遭到窜改,提取隐藏在程序执行时产生的线程关系中的纠错码信息,恢复被窜改的水印信息。理论分析和实验表明,该方案提高了水印的数据率,降低了程序负载,增强了水印的抗攻击性,并能在一定程度上恢复被窜改的水印信息。
針對動態圖水印數據率低、水印信息遭到攻擊後不易恢複的問題,提齣瞭一種水印信息可恢複的軟件水印方案。該方案結閤瞭動態圖水印和線程水印技術。為瞭使水印信息可恢複,在水印的嵌入過程中,利用設計的一種特殊的動態圖結構錶示水印信息,併在程序的線程關繫中隱藏動態圖的糾錯碼信息。提取水印圖的過程中一旦檢測到水印圖遭到竄改,提取隱藏在程序執行時產生的線程關繫中的糾錯碼信息,恢複被竄改的水印信息。理論分析和實驗錶明,該方案提高瞭水印的數據率,降低瞭程序負載,增彊瞭水印的抗攻擊性,併能在一定程度上恢複被竄改的水印信息。
침대동태도수인수거솔저、수인신식조도공격후불역회복적문제,제출료일충수인신식가회복적연건수인방안。해방안결합료동태도수인화선정수인기술。위료사수인신식가회복,재수인적감입과정중,이용설계적일충특수적동태도결구표시수인신식,병재정서적선정관계중은장동태도적규착마신식。제취수인도적과정중일단검측도수인도조도찬개,제취은장재정서집행시산생적선정관계중적규착마신식,회복피찬개적수인신식。이론분석화실험표명,해방안제고료수인적수거솔,강저료정서부재,증강료수인적항공격성,병능재일정정도상회복피찬개적수인신식。
This paper proposed a watermark recoverable software watermarking scheme towards the problem of low data rate of dynamic graph encoding and the difficulties of recovering watermark after the attack.This scheme combined the dynamic graph watermarking technology and the thread-based watermarking technology.In the process of embedding,this scheme took advan-tage of a special designed dynamic graph structure,it used the structure to encode the watermark and in order to recover the watermark,hided error-correcting code into the thread relations.In the process of extracting,once detecting the tamper of the watermark graph,the scheme extractd the error-correcting code hidden in the relations between threads to recover the water-mark been tampered.Theoretical analysis and experimental results show that the scheme improves the date rate of watermark, reduces the program load and enhances the watermarking resistance.In addition,the watermark been tampered can be recov-ered to some extent.