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Method and device for updating safety context in user equipment and user equipment

A technology of user equipment and context, applied in the field of communication, can solve problems such as increasing the number of card writes, invalid security context, and shortening the service life of the card

Active Publication Date: 2014-07-16
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Understandably, this step will cause the security context in the USIM card to be updated again, that is, the security context will be marked as invalid again
[0005] It can be seen from the above method that after the UE is turned on, as long as the UE does not successfully access the network, the security context in the card will be continuously updated, that is, the number of times of writing to the card will be increased, thereby shortening the service life of the card

Method used

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  • Method and device for updating safety context in user equipment and user equipment
  • Method and device for updating safety context in user equipment and user equipment
  • Method and device for updating safety context in user equipment and user equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Embodiment 1 of the present invention provides a method for updating a security context in a user equipment UE. The UE is provided with a storage unit for storing the security context, where, optionally, the storage unit may be a subscriber identity module, such as a USIM card. Such as figure 1 As shown, the method includes the following steps:

[0051] S101. Send a network attach message to the network, and perform at least one of integrity protection and encryption on the message using a valid security context in a storage unit during the network attach process.

[0052] For example, when the UE receives an instruction to turn on the device initiated by the user, it starts the process of turning on the device. The network is a wireless communication network, which may include GSM (Global System For Mobile Communications, Global System for Mobile Communications), UMTS (Universal At least one of Mobile Telecommunications System, Universal Mobile Communications System)...

Embodiment 2

[0078] In order for those skilled in the art to better understand the technical solution of the method for updating the security context provided by the embodiment of the present invention, in the second embodiment of the present invention, the storage unit is specifically a USIM card and the UE is powered on to access the network as an example. The method for updating the security context in the UE provided by the invention is described in detail.

[0079] Such as figure 2 As shown, the UE includes NAS, RRC, and USIM. In this embodiment of the present invention, the security context may specifically be an EPS security context. Thus, the method for updating the security context includes the following steps:

[0080] In step 201, the NAS receives a user-initiated instruction to activate the UE.

[0081] In step 202, after the NAS receives the instruction to activate the UE, the NAS initiates a network attachment process if the network attachment condition is met.

[0082] ...

Embodiment 3

[0093] Corresponding to Embodiment 1, Embodiment 3 of the present invention provides an apparatus 40 for updating a security context in a UE, wherein the UE is provided with a storage unit for storing the security context. Such as image 3 As shown, the device includes:

[0094] The sending unit 401 is configured to send a network attachment message to the network, and use the effective security context in the storage unit to perform at least one of integrity protection and encryption on the message during the network attachment process;

[0095] An identifying unit 402, configured to identify the security context as invalid information;

[0096] A prohibiting unit 403, configured to prohibit updating the security context identified as invalid information in the storage unit;

[0097] The writing unit 404 is configured to write the currently valid security context into the storage unit to update the security context identified as invalid information when receiving an instruc...

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PUM

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Abstract

The embodiment of the invention discloses a method and device for updating a safety context in user equipment and the user equipment, and relates to the technical field of communication. The method and device and the user equipment are invented for reducing unnecessary writing operation. The method for updating the safety context in the user equipment includes the steps of sending network attachment information to a network, carrying out integrity protection and / or integrity encryption on the information through an effective safety context in a storage unit in the network attachment process, marking the safety context to be invalid information, forbidding updating of the safety context marked to be the invalid information in the storage unit, and when a device stopping instruction sent by a user is received, writing the currently-effective safety context into the storage unit to update the safety context marked to be the invalid information. The method and device and the user equipment can be used in the network technology.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for updating security context in user equipment and user equipment. Background technique [0002] Currently, when a UE (User Equipment, user equipment) accesses a wireless communication network, such as an LTE (Long Term Evolution, long-term evolution) network, it needs to negotiate with a network side server, such as an MME (Mobility Management Entity, mobility management entity). In order to maintain the integrity and security of the message during the negotiation process, the security context is usually stored in the identification card or non-volatile memory of the UE. [0003] In the prior art, considering that the UE may encounter network anomalies when accessing or attaching to the network, or the UE may receive a network detachment message after the UE successfully attaches to the network, these situations will cause The security context for is updat...

Claims

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Application Information

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IPC IPC(8): H04W8/26H04W12/04
Inventor 孙兵
Owner HUAWEI TECH CO LTD