多媒体取证
摘要
Multimedia forensics is an important research area of information security, as well as a key technology of digital evidence authentication. Nowadays multimedia materials can be doctored very easily by pervasive editing software. A series of issues will arise if those fake multimedia materials are published, such as copyright of digital media, protection of personal privacy, social security, and so on. Thus examining the authenticity and integrity of digital media is of great signi cance. In the paper the characteristics and principles of multimedia forensics technology are introduced. Four important research topics of multimedia forensics, media source identi cation, tampering detection, processing history analysis, anti-forensics, are reviewed and summarized with related fundamental science and technology research progress. Finally the potential future trends of multimedia forensics are discussed.