tailieunhanh - Báo cáo hóa học: " Research Article Digital Video Encryption Algorithms Based on Correlation-Preserving Permutations"

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: Research Article Digital Video Encryption Algorithms Based on Correlation-Preserving Permutations | Hindawi Publishing Corporation EURASIP Journal on Information Security Volume 2007 Article ID 52965 15 pages doi 2007 52965 Research Article Digital Video Encryption Algorithms Based on Correlation-Preserving Permutations Daniel Socek 1 Spyros Magliveras 2 Dubravko Culibrk 1 Oge Marques 1 Hari Kalva 1 and Borko Furht1 1 Department of Computer Science and Engineering Florida Atlantic University Boca Raton FL 33431 USA 2 Department of Mathematical Sciences Florida Atlantic University Boca Raton FL 33431 USA Correspondence should be addressed to Daniel Socek dsocek@ Received 28 February 2007 Accepted 19 June 2007 Recommended by Qibin Sun A novel encryption model for digital videos is presented. The model relies on the encryption-compression duality of certain types of permutations acting on video frames. In essence the proposed encryption process preserves the spatial correlation and as such can be applied prior to the compression stage of a spatial-only video encoder. Several algorithmic modes of the proposed model targeted for different application requirements are presented and analyzed in terms of security and performance. Experimental results are generated for a number of standard benchmark sequences showing that the proposed method in addition to providing confidentiality preserves or improves the compression ratio. Copyright 2007 Daniel Socek et al. 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. 1. INTRODUCTION Application-specific video encryption represents an important problem in multimedia security. In order to support a wide range of real-world video applications an encryption algorithm should be designed within a specific video compression framework. Conventional encryption is designed for generic data and as such it does not support many specific video application requirements.