3D model encryption transmission method and decryption method

Abstract

The invention discloses a 3D model encryption transmission method and decryption method. The 3D model encryption transmission method comprises the steps that a user side obtains a first public key generated by a server side; the user side generates a first secret key; the user side performs digital signature on the G code file to be transmitted; the user side carries out slicing out-of-order processing on the G code file with the digital signature to generate a G code file group and combination sequence information; the user side encrypts the G code file group through a first secret key to generate a first ciphertext; the user side encrypts the first secret key through the first public key to generate a second secret key; the user side generates a first information file; the user side encrypts the first information file through the first public key so as to generate a second ciphertext; and the user side sends the first ciphertext and the second ciphertext. According to the 3D model encryption transmission method provided by the invention, the first ciphertext and the second ciphertext transmitted by the invention have relatively high anti-cracking capability.

Description

technical field [0001] The invention relates to the field of 3D model encryption, in particular to a 3D model encryption transmission method, a 3D model decryption method, a user terminal and a client terminal. Background technique [0002] As an incremental manufacturing technology, 3D printing technology is widely used in the processing and manufacturing industry, and has broad development prospects in aerospace, medical equipment and construction industries. With the rise of cloud service platforms, the trend of "Internet +" 3D printing socialization and network services is becoming more and more obvious. Therefore, the protection of online 3D printing manufacturing model data is the key to realize the protection of intellectual property rights under the online 3D printing manufacturing mode for open crowd creation. [0003] The existing traditional file encryption technology adopts a file protection scheme based on a single-mode encryption algorithm, and the design is t...

AI Technical Summary

Problems solved by technology

[0003] The existing traditional file encryption technology adopts a file protection scheme based on a single-mode encryption algorithm, and the design is too simple, which makes the confidentiality of files and the integrity of data cannot be well protected

Some encryption programs do not have any restrictions on the length of the key entered by the user, and the key is directly used for encryption without any processing after reading the key

If the key length entered by the user is too short, it will be difficult to resist malicious attacks, and it is easy to expose the specific information of the key by directly encrypting with the original key

In addition, most file encryption technologies only support local encryption and decryption, and some programs even have certain loopholes in their implementation. Such algorithms are easy to crack when time and resources are sufficient.

Images