Encryption and decryption device used for network data encryption transmission

Abstract

The invention provides an encryption and decryption device used for network data encryption transmission. The encryption and decryption device is connected with data receiving and transmitting equipment. During data transmitting, the encryption and decryption device firstly performs hardware encryption, in the encryption and decryption device, on data to be transmitted in the data receiving and transmitting equipment and then transmits the data to be transmitted to a receiver; during data receiving, the encryption and decryption device performs hardware decryption, in the encryption and decryption device, on the received data in the data receiving and transmitting equipment; a secret key used for data encryption and decryption is generated in the encryption and decryption device. By the adoption of the technical scheme, encryption and decryption are directly performed, in the encryption and decryption device, on the data; internal information of the encryption and decryption device is protected in the mode of identity authentication, in addition, CPU resources of the data receiving and transmitting equipment will not be consumed, hardware encryption for the data is achieved, and the confidentiality effect of the data is better; the asymmetric cryptographic algorithm and the symmetric encryption algorithm are used at the same time, a private key is completely hidden in the data encryption and decryption device in the form of ciphertext, and therefore the encryption and decryption device has a better encryption effect.

Description

technical field [0001] The invention relates to the fields of data transmission and data security, in particular to an encryption and decryption device for encrypted transmission of network data. Background technique [0002] In recent years, with the development of computer network technology, the use of network for data transmission has also entered people's daily life and work, and data information leakage has become the most concerned issue. Many threats may lead to data loss or leakage, and further cause users' trust in instant messaging services, so there is a great demand for products that ensure data security. [0003] In order to improve the security of data information, the current effective method is to encrypt data, so that data can only be browsed by designated people through encryption to ensure data security. Currently, there are three common data encryption methods: [0004] The first method: use symmetric encryption algorithm to encrypt data. Symmetric enc...

AI Technical Summary

Problems solved by technology

At present, this method is the most promising way to realize the large-scale application of data encryption, but it has not yet been applied

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