Selective Encryption Scheme for Vector Map Data using Chaotic Map

Abstract

With the rapid interest in Geographic Information System (GIS) contents, a large volume of valuable GIS dataset has been distributed illegally by pirates, hackers, or unauthorized users. Therefore the problem focus on how to protect the copyright of GIS vector map data for storage and transmission. But GIS vector map data is very large and current data encryption techniques often encrypt all components of data. That means we have encrypted large amount of data lead to the long encrypting time and high complexity computation. This paper presents the selective encryption scheme using hybrid transform for GIS vector map data protection to store, transmit or distribute to authorized users. In proposed scheme, polylines and polygons in vector map are targets of selective encryption. We select the significant objects in polyline/polygon layer, and then they are encrypted by the key sets generated by using Chaotic map before changing them in DWT, DFT domain. Experimental results verified the proposed algorithm effectively and error in decryption is approximately zero.

An encryption algorithm for vector maps based on the Gaussian random and Haar transform

“…The importance of security in the field of vector map encryption is already well known. Some selective encryption algorithms (Bang et al 2015, Pham et al 2016) that consider security have also been presented. These algorithms can encrypt parts of objects with the chaos mechanism (Bang et al 2015(Bang et al , 2016 or AES algorithm Rijmen 1999, Pham et al 2019), which enable partial extraction of the map without decrypting the entire map.…”

“…Some selective encryption algorithms (Bang et al 2015, Pham et al 2016) that consider security have also been presented. These algorithms can encrypt parts of objects with the chaos mechanism (Bang et al 2015(Bang et al , 2016 or AES algorithm Rijmen 1999, Pham et al 2019), which enable partial extraction of the map without decrypting the entire map. However, certain selective encryption algorithms (Bang et al 2015(Bang et al , 2016 did not propose security evaluations.…”

VMPS: A Vector Map Protection Framework Supporting Dynamic Game and Local Desensitization

“…The data scrambling technique generally refers to adding perturbation data to map coordinates, thereby reducing map accuracy and perturbing data display. Van et al (2017) and Bang et al (2015) respectively proposed scrambling schemes for the coordinate points of geographic elements in the vector map. Both of them are based on the idea of selective encryption.…”

Vector Map Random Encryption Algorithm Based on Multi-Scale Simplification and Gaussian Distribution

“…Bang et al [14] proposed a selective encryption method for vector map data based on a chaotic map in the frequency of discrete wavelet transform (DWT); however, this method only selects some objects and encrypts DC (Direct Current) values in the DWT domain by a common secret key. This method is very simple and weak because it does not encrypt all contents of vector maps and uses a common key.…”

“…Consequently, GIS vector map data protection is necessary to prevent illegal duplication and distribution. GIS vector map security includes copyright protection [2][3][4], access control for users, and vector map data encryption in order to prevent attacks or illegal distribution during storage and transmission, and damage in the integration process of geographical information [5][6][7][8][9][10][11][12][13][14]. However, access control on the Web is unable to prevent attacks or illegal duplication and distribution, and watermarking techniques are only useful in identifying ownership and for copyright protection, while unauthorized users should not be able to see, attack, or extract GIS vector map content.…”