Most block-based image authentication techniques that are presented in the literature sacrifice localization accuracy in order to resist vector quantization (VQ) counterfeiting attacks. In this paper, we show that strong cryptography schemes, which produce a long signature, can be used to sign image blocks without regard to the size of these blocks. In addition, a new approach to generate overlapped watermark segments for image blocks is presented. These watermarks are generated using one-way function based on an NP-complete problem. Moreover, a block-based image authentication technique is proposed. This technique provides strong protection against the VQ attack, as well as a great enhancement in localization accuracy and system security.
Localization and security enhancement of block-based image authentication
2005-01-01
303314 byte
Conference paper
Electronic Resource
English
Localization and Security Enhancement of Block-based Image Authentication
British Library Conference Proceedings | 2005
|A Color Image Authentication Watermarking Algorithm Based on Image Block
British Library Online Contents | 2005
|Improved security enhancement for a dynamic ID-based remote user authentication scheme
British Library Online Contents | 2007
|Joint image coding and image authentication based on absolute moment block truncation coding
British Library Online Contents | 2013
|