Secret key obtaining method in evolution wireless communication network and user equipment
A technology for user equipment and keys, used in wireless communications, electrical components, security devices, etc.
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Embodiment 1
[0037] This embodiment describes that the HSS and the user equipment respectively derive the keys to protect the access layer signaling, the non-access layer signaling, and the user data security according to the shared key, and the keys are distributed by the MME to the network entity performing security operations.
[0038] See figure 2 , Is a schematic diagram of the key distribution process in the first embodiment of the present invention. The HSS and the user equipment are pre-set with a derivation function KGA that derives keys for protecting access layer signaling, non-access layer signaling, and user data security based on the shared key. The specific steps for key generation and distribution include:
[0039] 1. The user equipment and the HSS share one or more keys in advance.
[0040] The way of sharing the key on the user equipment and the HSS can be achieved by setting the same key on the user equipment and the HSS. The user equipment and the HSS may share one or more k...
Embodiment 2
[0058] This embodiment describes that the HSS and the user equipment jointly derive the root key, and the MME and the user equipment respectively derive the keys to protect access layer signaling, non-access layer signaling, and user data according to the root key. The MME Distributed to network entities that perform security operations.
[0059] See Figure 4 , Is a schematic diagram of the key distribution process of the second embodiment of the present invention. The derivation function HA of the same root key has been pre-set on the HSS and the user equipment, and the same secret key for protecting access layer signaling, non-access layer signaling and user data security has been preset on the MME and user equipment. The key deduction function MA, the specific steps of key generation and distribution include:
[0060] 1. The user equipment and the HSS share one or more keys in advance.
[0061] The way of sharing the key on the user equipment and the HSS can be achieved by sett...
Embodiment 3
[0082] This embodiment describes that the root key is obtained by the coordinated deduction of HSS and UPE, the key that protects access layer signaling, non-access layer signaling and user data is derived by MME, and is encrypted with the root key and distributed to user equipment And network entities that perform security operations.
[0083] See Figure 8 , Is a schematic diagram of the key distribution process of the third embodiment of the present invention. The root key derivation function HA has been pre-set on the HSS and user equipment. The specific steps of key generation and distribution include:
[0084] 1-4. Same as steps 1-4 in the process of the second embodiment.
[0085] 5. The MME uses the root key to encrypt its derived keys for protecting the access layer signaling, non-access layer signaling and user data security, and sends the encrypted key to the user equipment. The process of MME deriving the above key is the same as that in the second embodiment, and it ca...
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