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A Research on Key Technology of Computer Dynamic Forensics

Author: ZhangWei
Tutor: ZhangJiaWan;XueJingSheng
School: Tianjin University
Course: Computer technology
Keywords: Computer forensics Process concealment Data protection Data Integrity’s validation RSA digital signature C/S model Key management Secure storage
CLC: D918.2
Type: Master's thesis
Year: 2009
Downloads: 43
Quote: 0
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Abstract


With the development of computer technology and the popularity of information,people get a great convenience and the events of computer crime also occur frequently. How to use Computer forensics getting enough evidence to punish computer crimes is an important field which become more and more concerned.The traditional Computer forensics mostly get the data after the crimes, so the data which was just gotten may have been destroyed. This paper realized this problem and designed a dynamic forensics system based on c/s model which can get the data automatically on time.The paper mainly researched on how to design and achieve the Client part of the c/s model. This part mainly involved how to get the forensics message secretly and protect them. The forensics program was carried out by a .dll program. It can be inserted into the system process automatically after the computer’s running through the technology of process concealment system. Also we designed a program carried out by a .dll program named stakeout program for making the forensics program more obstinate. The forensics message would be encrypted and dynamic saved for the data integrity as soon as we got them, and also a relevant validation scheme was designed for the data integrity’s validation.This paper is also responsible for the design of server-side.The mainly elements included in this paper: Establish the credible and safe system of Computer forensics to ensure the evidence we received reality and validity; Control the client software to receive the information of operations on the Client;Secure storage of the evidences on the server;Analyse the evidence.The experiment suggested that the technology of process concealment in the Client can ensure the forensics program worked secretly without being found by the familiar Anti-Virus software; the technology of the integrity encryption and validation can find any form of the destruct to the forensics message and thus the authenticity, the integrity and the continuity of the message can be ensured.

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CLC: > Political, legal > Legal > UNIVERSITY > Criminalistics ( the response to crime science, crime Investigation ) > Investigative techniques and methods
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