tailieunhanh - Báo cáo hóa học: " Research Article Secure Arithmetic Coding with Error Detection Capability"

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: IResearch Article Secure Arithmetic Coding with Error Detection Capability | Hindawi Publishing Corporation EURASIP Journal on Information Security Volume 2010 Article ID621521 9 pages doi 2010 621521 Research Article Secure Arithmetic Coding with Error Detection Capability Mahnaz Sinaie and Vahid Tabataba Vakili Department of Electrical Engineering Iran University of Science and Technology Narmak Tehran 1684613114 Iran Correspondence should be addressed to Mahnaz Sinaie msinaie@ Received 9 February 2010 Revised 23 May 2010 Accepted 7 September 2010 Academic Editor Enrico Magli Copyright 2010 M. Sinaie and V. T. Vakili. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Recently arithmetic coding has attracted the attention of many scholars because of its high compression capability. Accordingly this paper proposed a Joint Source-Cryptographic-Channel Coding JSCC based on Arithmetic Coding AC . For this purpose embedded error detection arithmetic coding which is known as continuous error detection CED is used. In our proposed method a random length of forbidden symbol which is produced with a key is used in each recursion. The dummy symbol is divided into two dummy symbols with a key and then is placed in random positions in order to provide security. Finally in addition to producing secure codes the suggested method reduced the added redundancy to half of the total redundancy added by CED. It has less complexity than cascades source channel coding and encryption while its key space in comparison to other joint methods has enlarged. Moreover the coder provides a flexible switch between a standard compression model and a joint model. 1. Introduction The increasing demand for the use of computer networks the wide availability of digital multimedia contents and the accelerated growth of wired and wireless communications have resulted in new research areas in joint .