Full-pipeline MD5 Algorithm And Password Recovery Research Based On Mimic Computer

Information and data are core resources in today's IT Era as well as personal privacy is also increasingly valued,it is a common practice to encrypt documents that contain important information.However,such encrypted documents will also bring great inconvenience to the Internet information monitoring department,and once the password is lost,the file will cause great loss to the user.Faced with this situation,password recovery application technology came into being.Password recovery deployed on Internet export,it is one of the key links in the application layer of the bad information filtering system,and it is an important means to monitor and maintain the information security of the Internet and the electronic evidence collection.The types of encrypted documents on the Internet are usually based on WORD,PDF,RAR,encryption information system with MD5,SHA1,DES,AES,RC4 algorithm as the core.The password recovery process of this kind of encrypted document is accompanied by several Hash iterations,which is certainly complex.The performance of traditional computers depends mainly on CPU,its computational efficiency and computational structure are far from meeting the demand When faced with password recovery task for such documents.Wu Jiangxing,a professor of Chinese Academy of engineering,put forward a new theory of mimic computing and produce the world's first model prototype of mimic computer based on the theory.The mimic computer takes the computational structure as the higher order function,Obtaining the state of independent variable and changing its physical structure to generate the optimal solution set for the problem in the process of performing tasks and processing.The significant features of mimic computer is high performance and high efficiency and it is very suitable for large data intensive computing tasks.This thesis established the corresponding register module with pipeline to transfer value so that achieved full-pipeline MD5 algorithm based on mimic computer.Then adding in RAM to read and write the input,as well as using the carry save adder to improve the algorithm.Eventually experimental results show that the clock.frequency and data throughput reached 241.6MHz and 123.7Gbps respectively,so the performance was significantly improved in comparison with other platforms,and energy efficiency ratio increased 1300 times more than the general server.Designing password recovery system based on mimic computer and carrying out a lot of experiments.Through the relevant test data,when carrying on password recovery,the energy efficiency ratio of mimic computer is tens or hundreds of times than other platforms for different types of documents.