Geographic coordinate shape-preserving encryption method

Abstract

The invention discloses a geographic coordinate shape-preserving encryption method. The method comprises the following steps: an encryption algorithm and system key book parameters are determined; anencryptor encrypts the geographical coordinate encryption key, designs a key book and secretly sends the key book to the decryptor; the encryptor encrypts the geographic coordinates into a ciphertextC1, and encrypts the geographic coordinates to obtain a plaintext abstract; the ciphertext is converted into a binary system; step 5, the encryptor performs shape-preserving conversion on the ciphertext binary system according to the key book to form a shape-preserving ciphertext, and then the shape-preserving ciphertext forms a shape-preserving geographic coordinate group C2; the encryptor sendsthe shape-preserving geographic coordinate group C2 and the plaintext abstract to a decryptor; the decryptor converts the shape-preserving geographic coordinate group C2 into a ciphertext C1 accordingto the key book; the decryptor decrypts the ciphertext C1 into a plaintext according to the key and verifies the abstract; The problems are solved that in the prior art, constraint conditions of digital information, such as constraint conditions of geographic coordinates, cannot be guaranteed, geographic coordinate plaintext messages cannot be hidden, and encrypted information cannot also be hidden.

Description

technical field [0001] The invention belongs to data encryption technology, in particular to a geographic coordinate type-preserving encryption method. Background technique [0002] The danger of data breaches and attacks exists in all parts of its life cycle, such as production, storage, etc. These risks include: database intrusion, protocol loopholes, unauthorized access by insiders, and wrong operations by legitimate employees. Most companies focus on perimeter security and endpoint protection, purchasing anti-virus software or firewalls, and configuring network devices securely. However, for central asset data in various industries, this preventive approach has limited capabilities. Especially for the leakage of geographic coordinates. For example, the leakage of the coordinates of power poles and towers threatens power safety, and the leakage of geographic coordinates of vehicles threatens personal safety. The original technology only encrypts geographic coordinates...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: to provide a geographical coordinate type-preserving encryption method to solve the problem that the encryption of geographic information in the prior art only encrypts geographic coordinates , or simply keep the digital type, and cannot guarantee the constraints on digital information such as geographical coordinates; the geographic coordinates cannot be hidden in plaintext messages, nor can the encrypted information be hidden; the geographic coordinates before encryption and after encryption cannot be guaranteed Data format and geographic coordinate range constraints

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