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Timestamp authentication system and method

A technology of authentication system and authentication method, which is applied in the field of time stamp authentication system to achieve the effect of improving security

Inactive Publication Date: 2017-02-15
AMBIT MICROSYSTEMS (SHANGHAI) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the client will not verify the Force Renew data packet, so that when the client receives the Force Renew data packet sent by the false server, the client will apply for an IP address from the false server, resulting in a security problem

Method used

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Embodiment Construction

[0013] For ease of understanding, the terms involved in the present invention are briefly described below:

[0014] Encryption and decryption in asymmetric encryption need to be processed with two different keys, the two keys are: public key and private key. If encrypted with one of the keys, it needs to be decrypted with the other key. For example, if you encrypt with a public key, you need to decrypt with a private key. Conversely, to encrypt with the private key, you need to decrypt with the public key.

[0015] Dynamic Host Configuration Protocol (DHCP) is a LAN network protocol. Configured on the client and server, when the client connects to the server, the server automatically assigns an IP address to the client. Network administrators can manage the internal network through the server.

[0016] When the DHCP configuration on the server is changed, the client connected to the server needs to obtain information such as an IP address again. The process is as follows:...

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PUM

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Abstract

The invention provides a timestamp authentication system running in a server that communicates with a client. The system comprises a generating module for generating at least two Force Renew data packets in turn after the configuration of the DHCP on the server is changed, the Force Renew data packets including the timestamp FTime and time difference FTD; an encryption module for asymmetric encryption of the generated Force Renew data packets with a private secret key of the server; a transmission module for transmitting the at least two Force Renew data packets to the client in the order the data packets was generated; and a feedback module for transmitting a Reply data packet to the client after receiving the Renew data packets transmitted by the client. The invention also provides a timestamp authentication method. According to the invention, the security between the client and the server can be improved.

Description

technical field [0001] The invention relates to a time stamp authentication system and method. Background technique [0002] Nowadays, when a client connects to a server, the server automatically assigns the client an IP address and other information according to the DHCP protocol configured on it. When the configuration of the DHCP protocol on the server is changed, the server sends a Force Renew packet to the client to notify the client to reapply for an IP address and other information from the server. However, the client will not verify the Force Renew data packet, so that when the client receives the Force Renew data packet sent by the false server, the client will apply for an IP address from the false server, thereby causing security problems. Contents of the invention [0003] In view of the above, it is necessary to provide a time stamp authentication system and method, so that the client can verify whether the Force Renew data packet is sent from a fake server. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L29/12
CPCH04L63/08H04L63/083H04L61/5014
Inventor 黄川哲
Owner AMBIT MICROSYSTEMS (SHANGHAI) LTD