关键词: 数字多媒体取证, 篡改检测, 源设备辨识, 设备成分取证, 真实性鉴定, 取证攻击

Abstract: Digital multimedia forensics is an emerging research field of information security. The research on digital multimedia forensics is important to ensure the credibility of digital multimedia data. Using digital image forensics as an example, the authors reviewed the current digital multimedia forensics techniques from the five aspects, including tamper detection, source device identification, authenticity verification, device component forensics, and the reliability of digital multimedia forensics. The authors focused on introducing typical algorithms, and meanwhile, pointed out the main problems in the current research and suggested the urgent topics for the future research.

Key words: digital multimedia forensics, tamper detection, source device identification, device component forensics, authentication verification, forensics attack