Selective Encryption Algorithm Based on DCT for GIS Vector Map

Giao, Pham Ngoc; Kwon, Gi-Chang; Lee, Suk-Hwan; Kwon, Ki-Ryong

doi:10.9717/kmms.2014.17.7.769

Cited by 7 publications

(4 citation statements)

References 1 publication

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“…The encryption approach proposed by Li [32] secures conventional database-based spatial data within an Oracle spatial database. Approaches for protecting spatial files during storage and transfer include those focusing on vector-based files [25,[33][34][35][36][37] and those focusing on general spatial files [31]. For instance, Dakroury et al [31] propose a combination of encryption and digital watermarking techniques, while Ghaleb et al [38] propose an encryption module for the QGIS software to prevent users from making unauthorised copies of the original data.…”

Section: Security and Usability Concerns For Spatial Files Within Ent...mentioning

confidence: 99%

A Usable Encryption Solution for File-Based Geospatial Data within a Database File System

Sharma,

Govorov,

Martin

2024

JCP

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Developing a security solution for spatial files within today’s enterprise Geographical Information System (GIS) that is also usable presents a multifaceted challenge. These files exist in “data silos” of different file server types, resulting in limited collaboration and increased vulnerability. While cloud-based data storage offers many benefits, the associated security concerns have limited its uptake in GIS, making it crucial to explore comparable alternative security solutions that can be deployed on-premise and are also usable. This paper introduces a reasonably usable security solution for spatial files within collaborative enterprise GIS. We explore a Database File System (DBFS) as a potential repository to consolidate and manage spatial files based on its enterprise document management capabilities and security features inherited from the underlying legacy DBMS. These files are protected using the Advanced Encryption Standard (AES) algorithm with practical encryption times of 8 MB per second. The final part focuses on an automated encryption solution with schemes for single- and multi-user files that is compatible with various GIS programs and protocol services. Usability testing is carried out to assess the solution’s usability and focuses on effectiveness, efficiency, and user satisfaction, with the results demonstrating its usability based on the minimal changes it makes to how users work in a collaborative enterprise GIS environment. The solution furnishes a viable means for consolidating and protecting spatial files with various formats at the storage layer within enterprise GIS.

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Section: Security and Usability Concerns For Spatial Files Within Ent...mentioning

confidence: 99%

A Usable Encryption Solution for File-Based Geospatial Data within a Database File System

Sharma,

Govorov,

Martin

2024

JCP

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“…Therefore, to measure the computation time we need to use specific mathematical model. In this section we just show the dependence of computation time and we compared result with Giao's algorithm [20,21] under same the total number of objects, as shown in Fig. 12.…”

Section: Computation Timementioning

confidence: 99%

“…We compare the properties of the proposed method with the existing encryption method [20,21]authors use DCT transform for GIS vector map encryption. In these papers, authors select all vertices in a layer and encrypt them by random algorithm in DCT domain, they did not consider important part in each layer.…”

Section: Algorithm Comparisonmentioning

confidence: 99%

Selective Encryption Algorithm Using Hybrid Transform for GIS Vector Map

2017

J Inf Process Syst

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Nowadays, geographic information system (GIS) is developed and implemented in many areas. A huge volume of vector map data has been accessed unlawfully by hackers, pirates, or unauthorized users. For this reason, we need the methods that help to protect GIS data for storage, multimedia applications, and transmission. In our paper, a selective encryption method is presented based on vertex randomization and hybrid transform in the GIS vector map. In the proposed algorithm, polylines and polygons are focused as the targets for encryption. Objects are classified in each layer, and all coordinates of the significant objects are encrypted by the key sets generated by using chaotic map before changing them in DWT, DFT domain. Experimental results verify the high efficiency visualization by low complexity, high security performance by random processes.

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“…Цель второй задачи -обнаружить поддельные картографические данные или поддельный фрагмент карты. Для решения этих задач в основном используются криптографические средства (цифровые подписи) [9,11], а также цифровые водяные знаки (ЦВЗ) [2,3].…”

Section: Introductionunclassified

Comparative Study of Compact Descriptors for Vector Map Protection

Asanov

Vybornova

Fedoseev

2022

Proceedings of the 32nd International Conference on Computer Graphics and Vision

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The paper is devoted to the study of compact descriptors of a vector map to be used as a zero watermark in the problems of cartographic data protection, namely, copyright protection and protection against unauthorized changes. The applicability of descriptors for these problems is determined by the characteristics of the resistance of their values to map transformations (adding, deleting vertices and individual objects, rotating the map, changing the order of the vertices of map objects, etc.). All descriptors are based on the use of the Ramer-Douglas-Pecker algorithm to extract a significant part of the polygons that determine the shape of the object. In our experimental studies, a map of urban development was used, which was divided into equal sections. Compact descriptors were calculated for each of them. Next, the map distortion procedure was performed, after which the stability of the descriptor values was checked. The conducted studies revealed the best descriptor for solving the copyright protection problem, as well as several combinations of other descriptors to identify certain distortions of the vector map. In addition, a modification of the Ramer-DouglasPecker algorithm, which is more efficient than the basic algorithm, is proposed.

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Selective Encryption Algorithm Based on DCT for GIS Vector Map

Cited by 7 publications

References 1 publication

A Usable Encryption Solution for File-Based Geospatial Data within a Database File System

A Usable Encryption Solution for File-Based Geospatial Data within a Database File System

Selective Encryption Algorithm Using Hybrid Transform for GIS Vector Map

Comparative Study of Compact Descriptors for Vector Map Protection

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