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    • 45. 发明授权
    • Extended diffie-hellman group key generation
    • 扩展的diffie-hellman组密钥生成
    • US08094823B1
    • 2012-01-10
    • US12343589
    • 2008-12-24
    • Sheng SunGuo Qiang Wang
    • Sheng SunGuo Qiang Wang
    • H04L9/08
    • H04L9/0841H04L9/0833
    • Described are group key generation and distribution mechanisms that offer efficient protection for multi-party communication applications. A network includes a key distribution center (KDC) and m relay stations (RS). The KDC and each RS choose their own secret number. Each RS encodes its secret number and sends it to the KDC. The KDC uses the secret numbers from all the RS's, as well as its own secret number, to generate a random group key RGK. Then, to each RS, the KDC sends a partial key, which is a mathematical combination of the RGK with that RS's secret number. Each RS can then combine its secret number with the received partial key to deduce the RGK. Once all RS have deduced the RGK, the RGK can be used for further key exchange and encryption procedures and encrypted data transfer.
    • 描述了为多方通信应用提供有效保护的群密钥生成和分发机制。 网络包括密钥分配中心(KDC)和m个中继站(RS)。 KDC和每个RS选择自己的密码。 每个RS编码其密码并将其发送到KDC。 KDC使用所有RS的秘密编号以及其自己的密码来生成随机组密钥RGK。 然后,对于每个RS,KDC发送部分密钥,其是RGK与该RS的密码的数学组合。 然后,每个RS可以将其密码与接收到的部分密钥相结合,以推导出RGK。 一旦所有的RS都推出了RGK,RGK可以用于进一步的密钥交换和加密过程以及​​加密的数据传输。