Method, equipment and system for checking temporary key negotiation information

A technology of temporary keys and negotiation messages, which is applied in the field of communication, can solve problems such as failure to respond to negotiation messages, consumption, resource occupation of receiving devices, etc., and achieve the effect of avoiding denial of service attacks
CN101686226AActive Publication Date: 2010-03-31HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
HUAWEI TECH CO LTD
Publication Date
2010-03-31

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Abstract

The embodiment of the invention discloses a method, equipment and a system for checking temporary key negotiation information, which relates to the field of communication and avoids the problem that alarge amount of resources of response equipment are occupied and consumed by attacking equipment. In the embodiment of the invention, an initiator calculates first checking information firstly according to a first derivation key of a first main key and a temporary key label and transmits temporary key negotiation information comprising the first checking information and the like to a responser; the responser calculates the second checking information, judges whether the second checking information and the received first checking information conform to a preset logical relationship or not, andverifies whether the temporary key negotiation information of the initiator is legal or not; and when a condition that the negotiation information is legal is judged, a temporary key and a temporarykey integrality code are calculated, and the temporary key is installed. The embodiment of the invention is mainly used in systems of various negotiating temporary keys.
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Description

technical field

[0001] The invention relates to the communication field, in particular to a method for negotiating a temporary key needed in the communication process, and a device and a system using the method. Background technique

[0002] The UWB (Ultra Wideband, ultra-wideband wireless communication technology) system is a distributed system, that is, each device in the UWB system is independent and equal to each other. The communication process in the UWB system is not managed by the central coordinator. If two devices need to communicate securely, they need to negotiate a temporary key so that the transmitted data can be encrypted using the temporary key in subsequent communications to ensure communication safety.

[0003] In the existing UWB system, the four-way handshake method is used to negotiate the temporary key, and the Initiator (initiator) and the Responder (response device) that need to carry out secure communication share a paired master key (PMK, Pairwise ...

Claims

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