Patents by Inventor Shuhua CAO

Shuhua CAO has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and device for generating local interface key
    Patent number: 9467432
    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.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: October 11, 2016
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Yanmei Yang, Shuhua Cao
  • METHOD AND DEVICE FOR GENERATING LOCAL INTERFACE KEY
    Publication number: 20140007207
    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.
    Type: Application
    Filed: August 29, 2013
    Publication date: January 2, 2014
    Applicant: Huawei Technologies Co., Ltd.
    Inventors: Yanmei YANG, Shuhua CAO
  • Method and device for generating local interface key
    Patent number: 8559633
    Abstract: A method for generating a local interface key includes: generating a variable parameter; and deriving the local interface key, according to the variable parameter generated and related parameters for calculating the local interface key. The method simplifies the process in which the terminal obtains the local interface key and the system resources are saved. Moreover, the local interface key is derived through the variable parameter and the valid key information. Thus, the security level between the UICC and the terminal is ensured.
    Type: Grant
    Filed: January 5, 2009
    Date of Patent: October 15, 2013
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Yanmei Yang, Shuhua Cao
  • METHOD AND DEVICE FOR GENERATING LOCAL INTERFACE KEY
    Publication number: 20090116642
    Abstract: A method for generating a local interface key includes: generating a variable parameter; and deriving the local interface key, according to the variable parameter generated and related parameters for calculating the local interface key. The method simplifies the process in which the terminal obtains the local interface key and the system resources are saved. Moreover, the local interface key is derived through the variable parameter and the valid key information. Thus, the security level between the UICC and the terminal is ensured.
    Type: Application
    Filed: January 5, 2009
    Publication date: May 7, 2009
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Yanmei YANG, Shuhua CAO