A router with hardware encryption and decryption function and its encryption and decryption method

Abstract

The present invention provides a router with hardware encryption and decryption functions and an encryption and decryption method thereof. In the router, it includes interconnected routing function modules and hardware encryption and decryption modules based on field programmable gate arrays. The functional module encrypts the plaintext received from the outside or decrypts the ciphertext received by the routing functional module from the external, and the routing functional module sends the encrypted data generated by the hardware encryption and decryption module or the decrypted data generated by decryption through the wireless channel. During the working process, the router does not use the router's own routing function module to encrypt or decrypt the plaintext or ciphertext received in the router, but uses the hardware encryption and decryption module to implement encryption and decryption. Therefore, it is ensured that the router performs high-speed security hardware encryption on the received plaintext or ciphertext, and at the same time, it ensures the high-speed and effective forwarding of the encrypted data / decrypted data by the router.

Description

[0001] This application claims the priority of the Chinese patent application filed on December 03, 2015 with the application number: 201510881396.X and the title of the invention as "a router with hardware encryption and decryption function and its encryption and decryption method", and its entire content is incorporated here. technical field [0002] The invention relates to the technical field of network security, in particular to a router and a method for encrypting / decrypting data by the router. Background technique [0003] In terms of network security, a router is an important device to ensure data security, and encryption technology is the core technology and effective means to ensure data security, which can ensure the security of data sent from one router to another. So when sending some important top-secret data, encryption is essential. If it is not encrypted, criminals who can analyze the data stream will easily read the transmitted data or even change the data...

AI Technical Summary

Problems solved by technology

Although general routers contain embedded micro-processing units, their computing power is extremely low and cannot meet the requirements for high-speed encryption and decryption of data streams.

[0005] In addition, at present, the more commonly used encryption method is software. Although it can satisfy personal use, if it is used in government departments and financial institutions with high security and large data volumes, the shortcomings of software encryption will be exposed, including : Software encryption takes up more host resources, software implementation is slow, program operation is easy to be tracked, keys and passwords are not easy to manage, virus software, especially Trojan horse programs and backdoor programs pose threats, etc.

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