Security of an ill-posed operator based scheme for image authentication

• Main Authors: WU, Yongdong, DENG, Robert H.
• Format: text
• Language: English
• Published: Institutional Knowledge at Singapore Management University 2005
• Subjects: Information Security
• Online Access: https://ink.library.smu.edu.sg/sis_research/193; https://ink.library.smu.edu.sg/context/sis_research/article/1192/viewcontent/Security_of_an_ill_posed_operator_based_scheme_for_image_authentication.pdf
• Institution: Singapore Management University

This letter analyzes the security of an image authentication scheme which exploits the instability of an ill-posed operator. Since the ill-posed operator produces only a limited number of authentic images regardless of the number of watermarks, an attacker can impersonate an image owner to generate...