Abstract
Chaos theory is a special dynamical systems theory that has great potential in innovative technological development of some IT products especially encryption and secure communication devices. Chaos-based image encryption refers to a new technology using the special feature of chaos that has extremely simple topology yet generates extremely complex dynamics as a new means of real-time secure image and video communications. This new approach is proven to be a fast, lean, cost-effective (with low computing power) and easily operated approach to Internet imaging with very high security. As the dynamical feature of interactive imaging requires a new dynamical encryption method rather than the conventional static encryption techniques to handle, the dynamical chaos theory provides a promising solution to satisfy this practical and crucial requirement.

Features
• Fast – satisfies real-time (online) requirements from most Internet-based applications
• Lean – satisfies light and compact requirements from most handheld devices such as mobile phones and PDAs
• Cost-effective – satisfies commercial requirements from civil and industrial markets
• Secure – satisfies basic requirements from most civil, industrial and business applications

Applications
• Secure end-to-end (text, image, video) data information exchange
• Secure communication devices (e.g. VoIP, walkie-talkie)
• Secure teleconferencing
• Secure key and lock devices

Contact Information
Mr H Y Wong
Director, Technology Transfer Office
City University of Hong Kong
83 Tat Chee Avenue
Kowloon, Hong Kong
Tel : (852) 2788 8428
Fax : (852) 2788 9119
Email : hy.wong@cityu.edu.hk

簡介
混沌理論是一種特別的動力系統理論，在資訊科技上能有相當廣範的應用，特別是用於加密及保安通信裝置上。在圖像加密方面，配合混沌基本特點，便能用非常簡單的方法來制做出很複雜的加密效果，非常有利於即時的圖像及錄影加密。這個新的技術能在互聯網上提供一個快捷、輕巧、經濟(較少運算) 便宜及易用的高保安性的圖像及錄影加密系統。在新的互動圖像加密上使用新的混沌理論進行動態加密，將能提供相對於一般靜態加密技術更佳更有效的加密效果，適合應用上的綜合要求。

特色
• 快捷 -符合互聯網上的即時應用要求
• 輕巧 - 能下載及運用於一般手提電話及電子記事薄上
• 便宜 - 能符合一般工業或民用經濟要求
• 安全 -能符合一般商業、工業或民用之保密要求

應用
• 安全 “端至端” (資料，圖像，影片) 資訊交流
• 安全通信裝置 (互聯網電話，手提對講機)
• 安全長途會議
• 安全保安裝置

查詢
香港城市大學技術轉移處處長黃漢儀先生
地址 : 香港九龍達之路83號
電話 : (852) 2788 8428
傳真 : (852) 2788 9119
電郵 : hy.wong@cityu.edu.hk