针对脚本文件的恶意哈希碰撞应用OA

The existing shell script file collision is reviewed,and the complexity of the existing frame-work to implement the collision with SHA-1 is analyzed in this paper.Techniques such as near-colli-sion attack are used to propose a new collision framework,which reduces the complexity of the original attack.The complexity of implementing collision applications with MD5 and SHA-1 in this framework is 216 and 263.4 respectively,lower than that of the birthday search.To verify the new collision frame-work,three applications with the MD5 algorithm are implemented in this paper.Firstly,the malicious collision of shell script files and bat files against the MD5 algorithm is implemented.Finally,the mali-cious collision of two Word files is realized by using macro commands in Word.The framework extends the application scenario of hash function collision and provides new research ideas for the design and analysis of hash functions,which has the value of the practical application.