tailieunhanh - Báo cáo hóa học: " Review Article Overview on Selective Encryption of Image and Video: Challenges and Perspectives

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: Review Article Overview on Selective Encryption of Image and Video: Challenges and Perspectives | Hindawi Publishing Corporation EURASIP Journal on Information Security Volume 2008 Article ID 179290 18 pages doi 2008 179290 Review Article Overview on Selective Encryption of Image and Video Challenges and Perspectives A. Massoudi F. Lefebvre C. De Vleeschouwer B. Macq and . Quisquater Thomson R D France Technology Group Corporate Research Security Laboratory 1 avenue Belle Fontaine 35576 Cesson-Sevigne Cedex France Correspondence should be addressed to A. Massoudi Received 10 January 2008 Accepted 24 November 2008 Recommended by Q. Sun In traditional image and video content protection schemes called fully layered the whole content is first compressed. Then the compressed bitstream is entirely encrypted using a standard cipher DES AES IDEA etc. . The specific characteristics of this kind of data high-transmission rate with limited bandwidth make standard encryption algorithms inadequate. Another limitation of fully layered systems consists of altering the whole bitstream syntax which may disable some codec functionalities. Selective encryption is a new trend in image and video content protection. It consists of encrypting only a subset of the data. The aim of selective encryption is to reduce the amount of data to encrypt while preserving a sufficient level of security. This computation saving is very desirable especially in constrained communications real-time networking high-definition delivery and mobile communications with limited computational power devices . In addition selective encryption allows preserving some codec functionalities such as scalability. This tutorial is intended to give an overview on selective encryption algorithms. The theoretical background of selective encryption potential applications challenges and perspectives is presented. Copyright 2008 A. Massoudi et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and .