Research On The Content Of Software Similarity Forensic

In recent years,the rapid development of computer software industry has changed people's life,from letter to fetion to wechat,from arcade game to computer game to mobile phone game,from 1g to 5g,there are too many things have changed from unimaginable to habitual.Nowadays,no matter government,enterprise or micro business,they can propagandize themselves and provide services by software.The demand of software is rising sharply.However,when developing a mature software,not only the investment of human resources and material resources,but also a lot of time to test are necessary.In order to reduce costs,malicious counterfeiting,pirated use and other situations happened.And then,computer software copyright infringement cases emerge in endlessly.According to the statistics of Shanghai Intellectual Property Court,in 2017-2018,the court accepted 702 cases of computer software copyright(including 34 cases of prelitigation preservation),13.04% more than 2015-2016.614 computer software copyright cases were concluded,20.16% more than 2015-2016.The most common forensic of computer software copyright infringement cases is software similarity forensic.With the continuous development of computer technology,the computer development language and tools of software are constantly innovating.It is no longer difficult to modify the code of the infringed software substantially or even rewrite the software with other development languages,which brings a certain degree of difficulty to software similarity forensic.In addition,only the copyright law and the regulations of computer protection can be referred for computer software copyright infringement cases.And only the implementation of software similarity forensic and the technical methods for software similarity inspection can be referred for standards and specifications.The lack of relevant laws and regulations not only leads to the loopholes of software copyright protection,but also leads to the difficulty of software rights holders' rights protection and judges' judgment on software copyright behavior.Including the introduction part,this paper is divided into five parts:In the introduction part,the author expounds the research background and significance of software similarity forensic,combs related monographs and literature,clarifies the current research status and further research space,and points out the direction for the research of this paper.In the first chapter,the author first introduces the concept of software,and introduces the software similarity forensic.Then the author leads to the follow-up content by raising questions.In the second chapter,the author expounds the common formats and corresponding forensic methods of the comparison materials in the current software similarity forensic,describes the problems that may be encountered in the forensic and provides solutions.In addition,the author discusses the operability of the comparison materials for cross language software,and opens up a new idea for the forensic work.In the third chapter,the author discusses whether the low software similarity means that there is no possibility of software similarity,and leads to software feature points.The author discusses the possibility of software similarity under the condition of similar feature points,and provides some evidence for judges to judge whether the software similarity is low.In the fourth chapter,the author puts forward three problems that often encountered in the software similarity forensic,and discusses the corresponding solutions,hoping to promote the litigation activities of software copyright infringement cases more smoothly.