Digital Chaotic Secure Communications Systems Based on Adaptive Filter
碩士 === 雲林科技大學 === 電機工程系碩士班 === 96 === The objective of this thesis is to explored in three important areas. At first, we introduce the characteristic of chaos and CSK technological of chaotic communication also introduce about cryptography.Next, we use the characteristics of replacing and iteration...
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ndltd-TW-096YUNT54420222015-10-13T11:20:18Z http://ndltd.ncl.edu.tw/handle/19460826394206832650 Digital Chaotic Secure Communications Systems Based on Adaptive Filter 以適應濾波器為基礎之混沌數位安全通訊研究 Jr-Fu Tan 唐志斌 碩士 雲林科技大學 電機工程系碩士班 96 The objective of this thesis is to explored in three important areas. At first, we introduce the characteristic of chaos and CSK technological of chaotic communication also introduce about cryptography.Next, we use the characteristics of replacing and iteration in cryptography, to random move the pixel of digital image. By using Arnold cat map, Baker map and Line map to move the image pixel, we can achieve the goal of image encryption. However, the such encryption methods could not change its image pixel histogram, so they might give a rise for the security of message. Therefore, we apply the property of chaotic signals produced by chaotic generator might be used to confuse with those moved digital image pixel. By observing the grayscale histogram, the property of pixel confusion can be achieved. Such a property can guard against the attack of statistical analysis, the performance of the various of chaotic state equations can be analyzed to obtain the best. In finally, we propose a scheme of the chaotic in digital communication system based on extend Kalman filter (EKF) and Adaptive transversal filter(ATF), also transmit digital images in two systems to test the performances. Some digital images are transited to test and compare the system performances. S.C. Tsay 蔡樹川 2008 學位論文 ; thesis 131 zh-TW |
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碩士 === 雲林科技大學 === 電機工程系碩士班 === 96 === The objective of this thesis is to explored in three important areas. At first, we introduce the characteristic of chaos and CSK technological of chaotic communication also introduce about cryptography.Next, we use the characteristics of replacing and iteration in cryptography, to random move the pixel of digital image. By using Arnold cat map, Baker map and Line map to move the image pixel, we can achieve the goal of image encryption. However, the such encryption methods could not change its image pixel histogram, so they might give a rise for the security of message. Therefore, we apply the property of chaotic signals produced by chaotic generator might be used to confuse with those moved digital image pixel. By observing the grayscale histogram, the property of pixel confusion can be achieved. Such a property can guard against the attack of statistical analysis, the performance of the various of chaotic state equations can be analyzed to obtain the best. In finally, we propose a scheme of the chaotic in digital communication system based on extend Kalman filter (EKF) and Adaptive transversal filter(ATF), also transmit digital images in two systems to test the performances. Some digital images are transited to test and compare the system performances.
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author2 |
S.C. Tsay |
author_facet |
S.C. Tsay Jr-Fu Tan 唐志斌 |
author |
Jr-Fu Tan 唐志斌 |
spellingShingle |
Jr-Fu Tan 唐志斌 Digital Chaotic Secure Communications Systems Based on Adaptive Filter |
author_sort |
Jr-Fu Tan |
title |
Digital Chaotic Secure Communications Systems Based on Adaptive Filter |
title_short |
Digital Chaotic Secure Communications Systems Based on Adaptive Filter |
title_full |
Digital Chaotic Secure Communications Systems Based on Adaptive Filter |
title_fullStr |
Digital Chaotic Secure Communications Systems Based on Adaptive Filter |
title_full_unstemmed |
Digital Chaotic Secure Communications Systems Based on Adaptive Filter |
title_sort |
digital chaotic secure communications systems based on adaptive filter |
publishDate |
2008 |
url |
http://ndltd.ncl.edu.tw/handle/19460826394206832650 |
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