Research on the Method for SOFT TEMPEST Based on Digital Watermark

摘要

In this paper, a new application of watermarking is presented. We propose a method for Soft Tempest based on digital watermark. In our method, we adopt a watermark scheme based on multi-scale edges of digital image, and the critical information as watermark are embedded into important selected multi-scale edges. The critical information is invisible, secure and robust to common image processing operations. This method can prevent the critical information from eavesdroppers.