【摘要】：地理空間數(shù)據傳輸和分發(fā)模式的革新使得數(shù)據傳輸對網絡的依賴越來越強，而網絡普及率的不斷提高導致網絡數(shù)據傳輸?shù)陌踩允艿絿乐赝{。加密技術為數(shù)據的安全傳輸提供了一定的保障，，但避免不了數(shù)據被截獲和破壞。信息隱藏是信息安全領域中異于加密技術的又一種數(shù)據安全技術，它利用特定的載體掩護秘密數(shù)據的傳輸，使數(shù)據傳輸?shù)嫩欅E消失于茫茫的網絡大海之中。本文以信息隱藏技術理論為基礎，通過分析地理空間數(shù)據網絡傳輸?shù)目赡苄砸约皵?shù)據網絡傳輸?shù)牟豢煽啃裕_定了信息隱藏技術用于空間數(shù)據網絡傳輸?shù)目尚蟹桨�，并建立了空間數(shù)據隱藏模型。分別從空間數(shù)據預處理和空間數(shù)據隱藏兩個方面入手，研究設計了幾種空間數(shù)據預處理和空間數(shù)據隱藏的方法，并通過實驗進行了驗證和比較。論文研究具有一定的理論和實踐意義，主要內容和創(chuàng)新點如下： 1．分析并比較了隱藏技術與加密技術之間的異同，以地理空間數(shù)據網絡傳輸安全為背景，研究了隱藏技術用于空間數(shù)據網絡傳輸?shù)目尚行浴?2．以信息隱藏理論和空間數(shù)據特征為基礎，設計了空間數(shù)據隱藏的方案和實施流程，建立了空間數(shù)據隱藏模型。 3．分別研究了地理空間數(shù)據的壓縮、加密和分存方法，將通用數(shù)據壓縮加密方法與地理空間數(shù)據相結合，設計了針對空間數(shù)據的壓縮加密方案，并提出了針對空間數(shù)據的分存策略。 4．對常見BMP和JPEG圖像、MP3音頻和RM視頻進行了深入地結構剖析，改進了基于BMP圖像的最低有效位隱藏算法，設計并實現(xiàn)了以JPEG圖像、MP3音頻和RM視頻為載體的地理空間數(shù)據隱藏方法。 5．對文中空間數(shù)據預處理和隱藏方法進行了實驗驗證，分別比較了壓縮、加密和分存不同方法的運算結果和效率，對三種不同載體的容量進行了估算，提出了空間數(shù)據隱藏載體選取策略。
[Abstract]:The innovation of geospatial data transmission and distribution mode makes the data transmission more and more dependent on the network, and the increasing popularity of the network seriously threatens the security of the network data transmission. Encryption technology provides a certain guarantee for the secure transmission of data, but it can not avoid the interception and destruction of data. Information hiding is another kind of data security technology in the field of information security which is different from encryption technology. It uses special carriers to cover the transmission of secret data and makes the trace of data transmission disappear in the vast sea of network. Based on the theory of information hiding technology, this paper analyzes the possibility of geo-spatial data network transmission and the unreliability of data network transmission, and determines the feasible scheme of information hiding technology used in spatial data network transmission. A spatial data hiding model is established. From two aspects of spatial data preprocessing and spatial data hiding, several methods of spatial data preprocessing and spatial data hiding are studied and designed, and the experimental results are verified and compared. The main contents and innovations are as follows: 1. The similarities and differences between hiding technology and encryption technology are analyzed and compared. The feasibility of using hiding technology in spatial data transmission is studied. 2. Based on the information hiding theory and spatial data features, the scheme and implementation flow of spatial data hiding are designed, and the spatial data hiding model is established. 3. The compression, encryption and storage methods of geospatial data are studied respectively. The general data compression and encryption method is combined with geospatial data, and a compression encryption scheme for spatial data is designed. A strategy for spatial data sharing is proposed. 4. The structure of common BMP and JPEG images, MP3 audio and RM video are analyzed deeply, the minimum significant bit hiding algorithm based on BMP image is improved, and the JPEG image is designed and implemented. Geospatial data hiding method based on MP3 audio and RM video. 5. The experimental verification of the spatial data preprocessing and hiding methods in this paper is carried out. The computational results and efficiency of different methods of compression, encryption and storage are compared, and the capacity of three different carriers is estimated. The selection strategy of spatial data hiding carrier is proposed.
【學位授予單位】：解放軍信息工程大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：P208

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本文編號：2369612