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Enhanced key update method, device and user equipment

A technology for enhancing keys and user equipment, applied in security devices, wireless communications, electrical components, etc., can solve the problem of communication security cannot be guaranteed, and achieve the effect of ensuring communication security

Inactive Publication Date: 2017-04-12
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0027] The main purpose of the present invention is to provide an enhanced key update method, device and user equipment to solve the problem that the source RNC directly uses the currently used enhanced key IK when the SRNC migrates and uses a horizontal key chain in the related art. U / CK U The backward security problem caused by sending to the target RNC to prevent the communication key between the source RNC and the user from being leaked due to the target RNC being attacked or controlled by an attacker, resulting in the problem that the communication security between the user and the source RNC cannot be guaranteed

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  • Enhanced key update method, device and user equipment
  • Enhanced key update method, device and user equipment
  • Enhanced key update method, device and user equipment

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Embodiment Construction

[0053] Such as Figure 7 , 8 As shown, the principle of the present invention is: when using the horizontal key chain, the source RNC updates the enhanced key, and sends the updated enhanced key to the target RNC for use; when using the vertical key chain, the source RNC will store the The next hop enhanced key is sent to the target RNC for use. Wherein, the condition for deriving the horizontal key chain is: when the source RNC does not save the next-hop enhanced key. The condition for deriving the vertical key chain is: when the source RNC stores the next-hop enhanced key.

[0054]The present invention provides a method for updating an enhanced key, which includes: when the next-hop enhanced key is not saved at the source RNC during the migration process of the serving radio network controller, the source RNC updates the enhanced key, and the updated The enhanced key is sent to the target RNC.

[0055] Wherein, when the source RNC stores the next-hop enhanced key, the so...

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Abstract

The present invention provides a method for updating an enhanced key, including: when the source wireless network controller does not save the next-hop enhanced key during the migration process of the serving wireless network controller, the source wireless network controller updates the Enhance the key, and send the updated enhanced key to the target wireless network controller. The invention also provides an enhanced key update device and user equipment. The present invention first updates the enhanced key, and then sends the updated enhanced key to the target RNC, preventing the leak of the communication key between the source RNC and the user due to the target RNC being attacked or controlled by an attacker, and ensuring the communication between the user and the source RNC. Communication security between.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a method, device and user equipment for updating an enhanced key when a SRNC (Serving Radio Network Controller, Serving Radio Network Controller) of a wireless communication system migrates. Background technique [0002] 3GPP (3rd Generation Partnership Project, 3rd Generation Partnership Project) adopted Orthogonal Frequency Division Multiplexing (OFDM) and Multiple-Input Multiple-Output (MIMO) in Release7. The technology completes the future evolution road HSPA+ of HSDPA (High Speed ​​Downlink Packet Access, High Speed ​​Downlink Packet Access) and HSUPA (High Speed ​​Uplink Packet Access, High Speed ​​Uplink Packet Access). HSPA+ is an enhanced technology of 3GPP HSPA (High Speed ​​Packet Access, including HSDPA and HSUPA), which provides HSPA operators with low-complexity and low-cost smooth evolution from HSPA to LTE (Long Term Evolution, Long Term Evolution) w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W12/04H04W12/0433
Inventor 冯成燕甘露
Owner ZTE CORP