Data encryption transmission method, server and system based on virtual private network

Abstract

The invention discloses a data encryption transmission method based on a virtual private network. The data encryption transmission method comprises the following steps: generating a random output signal by using a superlattice cipher device; and encrypting and decrypting the data transmitted in the virtual private network according to the random output signal. The invention further discloses a server and a system for data encryption transmission in the virtual private network. The invention further discloses an application of the superlattice cipher device in a data encryption transmission process in a virtual private network. According to the invention, paired superlattice cipher devices are deployed at two ends of a virtual private network; a physical random signal can be generated in real time at a high speed and is used as a secret key for data encryption and decryption; moreover, the high rate of secret key distribution is enough to be matched with a one-time pad data encryption method, thereby avoiding the achievement of a public key and the high consumption, high delay and the like of a block encryption algorithm, guaranteeing the unconditional safety of data in a virtual private network, and guaranteeing the high efficiency and low delay of an encryption and decryption process.

Description

technical field [0001] The present invention relates to the technical field of information security, in particular, to a virtual private network-based data encryption transmission method, server, system and application. Background technique [0002] A virtual private network (Virtual Private Network, VPN) is a private network communication method commonly used to connect various groups. With the rapid development of modern communication technology, computer networks have been widely developed and applied. Virtual private networks are widely used among medium and large enterprises and institutions to avoid expensive laying costs and management burdens caused by dedicated line connections. A virtual private network can use an untrusted network such as the Internet to send secure and reliable messages, and the message content is mainly encrypted to ensure the confidentiality and integrity of the message. [0003] In the existing virtual private network encryption scheme, the k...

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Problems solved by technology

[0003] In the existing virtual private network encryption scheme, the key is usually negotiated and distributed using the public key algorithm. The operation mechanism is complex and the computing resource overhead is large. The operation brings a large burden, so that in practical applications, virtual private network systems with password security generally have disadvantages such as prolonged time, high cost, and low efficiency, and it is difficult to meet the growing data volume and access volume. Content encrypted transmission and access timeliness and other requirements

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