Reserch And Implementation Of Data Recovery Technology Based On Key Information Retrieval

In the current information age, network theft incidents and leaks occur frequently, the harm is more and more serious, and the scientific research, military and party and government organs have more and more classified information, the confidential information check of the computer terminal is the work of great significance. In fact, through the collection, processing and analysis of data can achieve the accurate reproduction of the computer terminal behavior. Therefore, the confidentiality of the safety inspection tools as an important solution of data security and recovery, has been the security organs and institutions by secret. And the security check is closely related to the recovery of the file, that is, data recovery, as the IT industry is a new field, is gradually pay attention to by people.Based on the above requirements, this paper first gives a brief account of the data recovery technology background currently and research status at home and abroad in the field of data recovery. Accidentally deleted or formatted result of search and recovery technology has conducted a survey and Research on the missing file, located in the field need to solve the problem.Then, analysis of the file system and the structure of the windows operating system, and studied the storage structure of all kinds of documents, summary results are given all kinds of file type structure. Research and summarizes the advantages and the difference between the recovery ability of relevant documents at home and abroad to restore the system or software, select a representative list is compared, the conclusion is given.After then, based on the current file recovery software are destroyed in the index file, the status quo of fragmented file recovery integrity lacking, this paper presents the file level keyword retrieval algorithm based on the given file recovery, the solution to retrieve and restore the fragmented files.Finally, aiming at the front of the proposed restoration algorithm for file level keyword search based documents, design a modular implementation of the program, and completed the software development of preliminary work by writing code, finally implemented on the Windows operating system file data automatically on the destruction in keyword search, file test the existence and the lost data recovery and other functions.The test data shows that, the system file recovery module can be successfully scanned and restore deleted files. Sensitive information on specific data recovery module is also very rapid, comprehensive. More valuable is, in the face of formatted data, this system not only has a higher recovery success rate, but also ensure the scanning rate is considerable, and the traditional data recovery software compared obvious advantages.