IMPLEMENTATION OF VISIBLE SIGNATURE

摘要

This paper introduces a novel electronic document (like word, excel file format) authentication scheme. In this scheme, user's digital signature string is embedded into user's rubber stamp image using digital watermark technology. We call the watermarked image visible signature and call the authentication scheme visible signature scheme. Combined with the digital watermark technology, PKI technology and smart card technology, the scheme is very secure for authentication, is easy to use and can works seamlessly with popular applications like word, excel and other electronic document processors.