tailieunhanh - Báo cáo hóa học: " Cryptanalysis of a New Signal Security System for Multimedia Data Transmission"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Cryptanalysis of a New Signal Security System for Multimedia Data Transmission | EURASIP Journal on Applied Signal Processing 2005 8 1277-1288 2005 Hindawi Publishing Corporation Cryptanalysis of a New Signal Security System for Multimedia Data Transmission Chengqing Li Department of Mathematics Zhejiang University Hangzhou 310027 China Email swiftsheep@ Shujun Li Department of Electronic Engineering City University of Hong Kong Kowloon Hong Kong Email hooklee@ Guanrong Chen Department of Electronic Engineering City University of Hong Kong Kowloon Hong Kong Email eegchen@ Gang Chen Department of Mathematics Zhejiang University Hangzhou 310027 China Email gangchen@ Lei Hu State Key Laboratory of Information Security Graduate School of Chinese Academy of Sciences Beijing 100049 China Email hu@ Received 23 August 2004 Revised 4 January 2005 Recommended for Publication by C. C. Jay Kuo Recently a new signal security system called TDCEA two-dimensional circulation encryption algorithm was proposed for realtime multimedia data transmission. This paper gives a comprehensive analysis on the security of TDCEA. The following security problems are found 1 there exist some essential security defects in TDCEA 2 two known-plaintext attacks can break TDCEA 3 the chosen-plaintext and chosen-ciphertext versions of the aforementioned two known-plaintext attacks can break TDCEA even with a smaller complexity and a better performance. Some experiments are given to show the security defects of TDCEA and the feasibility ofthe proposed known-plaintext attacks. As a conclusion TDCEA is not suitable for applications that require a high level of security. Keywords and phrases TDCEA image encryption chaos cryptanalysis known chosen-plaintext attack multimedia. 1. INTRODUCTION In today s digital world the security of multimedia data for example digital speech image and video files becomes more and more important due to their frequent transmission over open networks. In some real applications such as pay-TV medical imaging .

TÀI LIỆU LIÊN QUAN
crossorigin="anonymous">
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.