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Blind Extraction and Security Analysis of Spread Spectrum Hidden Watermarks
| 题名： | Blind Extraction and Security Analysis of Spread Spectrum Hidden Watermarks |
| 作者： | Marsh, John A.##Wohlrab, Gerard F. |
| 关键词： | *COMMUNICATIONS NETWORKS##ALGORITHMS##EXTRACTION##ITERATIONS##MONTE CARLO METHOD##SPREAD SPECTRUM##SYMPOSIA##SYSTEMS ANALYSIS |
| 摘要： | In the area of covert network communications, the focus has been on spread spectrum SS techniques using correlated host data, applicable to many data hiding and covert communications applications. Our work relates to the Iterative Generalized Least Squares IGLS blind signature recovery algorithm of Gkizeli et al.1, and can be summarized as follows 1 We have performed extensive Monte Carlo simulations that characterize the convergence properties of the algorithm as a function of signature length, host distortion, and number of hidden bits 2 We have developed and characterized the behavior of a fully blind extension of the IGLS algorithm, called the BC-IGLS Blind IGLS using Clustering 3 We have developed and performed a characterization study of an extension to the IGLS algorithm, called the MS-IGLS Multi Signature IGLS, that performs blind extraction of multiple signatures in multi-user embedding applications. |
| 总页数： | 15 |
| 报告类型： | 科技报告 |
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