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    • 16. 发明申请
    • 一种受控的密钥更新方法及装置
    • WO2007041933A1
    • 2007-04-19
    • PCT/CN2006/002475
    • 2006-09-21
    • 华为技术有限公司刘斐王正伟
    • 刘斐王正伟
    • H04L9/16H04Q7/38
    • H04L9/3226H04L9/0822H04L9/0891H04L63/0807H04L2209/80
    • An updating method of controlled secret keys applied in the 3G communication network includes: at the network side setting control parameters for controlling the updating of authentication secret key; after the terminal has passed the consistency authentication of the network side, it generates the Resynchronization Token according to the authentication secret key of itself, the received random numbers, the control parameters reserved by itself or input by the user, and by replacing the sequence number of the terminal with particular values, sends the requesting command of the resynchronization to the network side and attaches the Resynchronization Token; when the network side receives the requesting command of the resynchronization and determines that the sequence number of the terminal is the particular value, it performs the consistency authentication for the Resynchronization Token according to the set control parameters, random numbers, and the authentication secret key of the network side, if the authentication is passed, the secret key updating is performed, otherwise the related processes are performed. In the invention, the control parameters are added when generating the resynchronization token, thereby to prevent illegal users updating the authentication secret key by illegally cloning user cards.