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    • 7. 发明申请
    • ENHANCED SECURITY DESIGN FOR CRYPTOGRAPHY IN MOBILE COMMUNICATION SYSTEMS
    • 增强移动通信系统中的拼接安全设计
    • WO2005032201A1
    • 2005-04-07
    • PCT/SE2004/001300
    • 2004-09-10
    • TELEFONAKTIEBOLAGET LM ERICSSON (publ)
    • BLOM, RolfNÄSLUND, MatsARKKO, Jari
    • H04Q7/38
    • H04W12/04H04L9/0844H04L9/3273H04L63/0428H04L63/06H04L2209/80H04W12/02H04W12/06
    • A basic idea according to the invention is to enhance or update the basic cryptographic security algorithms by an algorithm-specific modification of the security key information generated in the normal key agreement procedure of the mobile communication system. For communication with the mobile terminal, the network side normally selects an enhanced version of one of the basic cryptographic security algorithms supported by the mobile, and transmits information representative of the selected algorithm to the mobile terminal. The basic security key resulting from the key agreement procedure (AKA, 10) between the mobile terminal and the network is then modified (22) in dependence on the selected algorithm to generate an algorithm-specific security key. The basic security algorithm (24) is then applied with this algorithm-specific security key as key input to enhance security for protected communication in the mobile communications network.
    • 根据本发明的基本思想是通过对在移动通信系统的正常密钥协商过程中生成的安全密钥信息的特定于算法的修改来增强或更新基本密码安全性算法。 为了与移动终端进行通信,网络侧通常选择由移动台支持的基本密码安全算法之一的增强版本,并将表示所选算法的信息发送到移动终端。 然后根据所选择的算法修改(22)移动终端和网络之间的密钥协商过程(AKA,10)产生的基本安全密钥,以生成特定于算法的安全密钥。 然后将基本的安全性算法(24)应用于该特定于算法的安全密钥作为关键输入,以增强移动通信网络中受保护通信的安全性。