Vector geographic data encryption method and decryption method based on three-dimensional Arnold transformation
A vector geographic data and vector geography technology, applied in the field of vector geographic data encryption method and decryption, can solve the problems of low scrambling degree, complex algorithm, not applicable to vector geospatial data encryption, etc., to ensure closure and support encryption processing. Effect
Pending Publication Date: 2021-12-10
PLA STRATEGIC SUPPORT FORCE INFORMATION ENG UNIV PLA SSF IEU
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Problems solved by technology
However, many current encryption algorithms are not only complex but also have a low scrambling degree, so they are not suitable for the encryption of vector geospatial data.
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[0038]A three-dimensional Arnold transform-based vector geographic data encryption method and a three-dimensional Arnold transform-based vector geographic data decryption method of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0039] Encryption method embodiment:
[0040] A kind of vector geographic data encryption method embodiment based on three-dimensional Arnold transform of the present invention, its process is as follows figure 1 Shown:
[0041] Step 1, extract vector geographic data from the vector geographic data set element by element or layer by layer, and call it vector geographic plaintext data.
[0042] Feature-by-feature extraction: traverse each geographic feature object in the dataset, and the feature type can be point, line or area. This method can control the granularity of subsequent encryption operations at the element level, which is convenient for selective encryption, and is sui...
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The invention belongs to the technical field of geographic information security, and particularly relates to a vector geographic data encryption method and decryption method based on three-dimensional Arnold transformation. The method comprises the following steps: firstly, acquiring vector geographic ciphertext data, and then determining vector geographic plaintext data corresponding to the vector geographic ciphertext data according to a constructed three-dimensional Arnold inverse transformation formula. The encryption method is achieved based on three-dimensional Arnold transformation, vector geographic plaintext data can be converted into vector geographic ciphertext data, geometric scrambling based on spatial transformation is carried out on the vector geographic data on the basis of not changing an original data structure, and the invention has the advantages of being concise, high in scrambling degree, high in encryption speed, completely reversible, resistant to enumeration attacks and the like. And a scrambling encryption protection selection with balanced performance, light weight and high efficiency is provided for vector geographic data encryption. The decryption method is an inverse process of the encryption method, the vector geographic ciphertext data can be simply and quickly converted into the corresponding vector geographic plaintext data, and data restoration and decryption are realized.
Description
technical field [0001] The invention belongs to the technical field of geographic information security, and in particular relates to a vector geographic data encryption method and decryption method based on three-dimensional Arnold transformation. Background technique [0002] Vector geospatial data involves many aspects such as economic operation, military security, organizational management, business operation, personal life, etc. There are long-term problems of information security and copyright protection in the process of production, storage, transmission and use. With the development of information technology and the enhancement of space-time perception capabilities, the types, sources and acquisition methods of geospatial data are becoming more and more diverse, the speed of data acquisition is gradually accelerating, and the amount of data is increasing rapidly. The expansion of the integrated ternary world revolves around the increasingly prominent security risks an...
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Login to View More IPC IPC(8): G06F21/60
CPCG06F21/602
Inventor 张毅李滨杨振凯王明明李翔崔鹏雨于晨光
Owner PLA STRATEGIC SUPPORT FORCE INFORMATION ENG UNIV PLA SSF IEU