Method and device for generating local interface key
AssigneeHuawei Technologies Co., Ltd.
InventorsYanmei YANG, Shuhua CAO
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Abstract
A method, a terminal and a communication system are provided for generating a local interface key. In the disclosure, the terminal generates a variable parameter and sends the generated variable parameter and other parameters for generating the local interface key to a network. The network derives, according to the variable parameter and the parameters for generating the local interface key, the local interface key. The terminal obtains the local interface key from the network so as to use in intercommunication with other device, such as a UICC, or other terminal device. Thus, the security of the intercommunication between the terminal and the other device is ensured.
Claims20
A method of key generation, the method comprising:
- generating, by a terminal, a variable parameter for use in a key generation;
- sending, by the terminal, the variable parameter to a network;
- sending, by the terminal, to the network, parameters for generating a local interface key;
- and
- obtaining, by the terminal, from the network, the local interface key which is derived by the network according to the variable parameter and the parameters for generating the local interface key, by using a key derivation algorithm.
A terminal comprising:
- a generating module configured to generating a variable parameter for use in a key derivation;
- a transmitter configured to send the variable parameter and parameters for generating a local interface key to a network;
- a receiver configured to obtain, from the network, the local interface key which is derived by the network according to the variable parameter and the parameters for generating the local interface key, by using a key derivation algorithm.
A communication system comprising:
- a terminal configured to communicatively connect with a network,
- wherein the terminal is configured to:
- generate a variable parameter for use in a key derivation;
- send the variable parameter and parameters for generating a local interface key to a network;
- and
- obtain the local interface key from the network, the local interface key being derived according to the variable parameter and the parameters for generating the local interface key, by using a key derivation algorithm.
Dependencies are inferred from the claim text.