Method for setting security authentication in precision time protocol (PTP)

A technology of security authentication and equipment, which is applied in the field of computer communication, can solve problems such as service failure, lack of security mechanism in protocols, and time synchronization disruption, so as to achieve the effect of ensuring communication security
CN102801733AInactive Publication Date: 2012-11-28SUZHOU CENTEC COMM CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SUZHOU CENTEC COMM CO LTD
Publication Date
2012-11-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for setting security authentication in a precision time protocol (PTP). The method comprises the following steps of: setting keys on a time synchronous source and time synchronous equipment in advance, and adding an identity authentication field in the transmitted PTP message when the time synchronous source transmits synchronous information to the time synchronous equipment, wherein the field comprises a first MD5 value, and the MD5 value consists of a sequence ID field and key logic operation; performing corresponding logic operation on the sequence ID field in the message and a locally preset key when the time synchronous equipment receives the PTP message to obtain a second MD5 value; comparing the two MD5 values, passing the PTP authentication if the PTP messages are the same, otherwise discarding the messages. Thus, the communication safety of PTP is guaranteed, so that equipment for operating the PTP is hardly influenced by hostile attack from an internet.
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Description

technical field

[0001] The invention relates to the technical field of computer communication, in particular to a method for setting safety authentication in PTP of computer network data communication technology. Background technique

[0002] PTP (Precision Time Protocol, precise clock synchronization protocol) is a time synchronization protocol, the synchronization source election mechanism specified in it is as follows:

[0003] When the PTP-enabled interface receives an Announce packet, it parses the Announce packet to obtain information related to synchronization source election, such as the time synchronization quality and time synchronization priority in the Announce packet.

[0004] After obtaining this information, compare it with the time synchronization quality and time synchronization priority of the device where the interface is located, and take the one with the best time synchronization quality among all received messages as the synchronization source. If it is...

Claims

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