VPN system based on dynamic encryption algorithm

A symmetric encryption algorithm and dynamic technology, applied in the field of information security, can solve problems such as slow speed, increased VPN system expenditure, and high price, and achieve the effect of enhancing the ability of the encryption system
CN1972237AActive Publication Date: 2007-05-30北京中电数安科技有限责任公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
北京中电数安科技有限责任公司
Publication Date
2007-05-30

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Abstract

This invention relates to VPN system based on dynamic code formula, which uses keys, chips and network technique and designs one set of dynamic symmetric code formula to make each formula with different virtual special networks in each data coding, wherein, each code system only adopts one symmetric code keys such as network keys, pack keys and channel keys through establishing code formula to generate formula and symmetric key generation formula.
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Description

Technical field:

[0001] The invention relates to the field of information security. It uses passwords, chips and network technology to realize a virtual private network (VPN). The invention can encrypt and decrypt plaintext data in real time to protect the transmission security of data files. It is suitable for governments, enterprises, military, Various networks of banks, securities, insurance and other units. Background technique:

[0002] At present, the establishment of symmetric encryption algorithms used in VPN products in the world is fixed, and the security of the symmetric encryption system is improved mainly by changing the symmetric key. Such as: data package key, network key, session key, tunnel key, etc., and encrypt keys by layer-by-layer superposition of multiple keys to realize the exchange of various keys. However, multiple encryption The layered superposition of keys also increases the expenditure of the VPN system and reduces the efficiency of the VPN; at...

Claims

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