一種混合機制的TETRA雙向鑒權協(xié)議
A Mixed Mechanism Mutual Authentication Protocol for TETRA
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摘要: 該文詳細分析了TETRA系統(tǒng)移動臺和網(wǎng)絡之間的鑒權協(xié)議，分析表明采用共享秘密的挑戰(zhàn)應答協(xié)議存在若干缺陷：(1)當無法保證訪問位置寄存器和歸屬位置寄存器之間的通信安全時會產(chǎn)生對已知明文攻擊的開放性；(2)網(wǎng)絡規(guī)模較大時，在網(wǎng)絡端難于保存和維護大量的鑒權密鑰。在理論分析的基礎上該文給出了一種基于身份公鑰的網(wǎng)絡端對移動臺和基于哈希鏈的移動臺對網(wǎng)絡端的鑒權協(xié)議，所提出的協(xié)議可以有效彌補上述缺陷。Abstract: The mutual authentication between the Mobile Station(MS) and Switching and Management Infrastructure(SwMI) for TETRA is analyzed in this paper and theoretical analysis shows that some drawbacks exist when using the shared secrets in the challenge-response protocol: (1) Open attack for known text might occur once the communication security between visiting location register and home location register can not be guaranteed; (2) It is difficult to store and maintain large amount of authentication keys when the network is large. An authentication protocol for TETRA using identity-based public keys for the SwMI authenticate the MSs and an authentication protocol based on hash chain for the MSs authenticate the SwMI are presented based on the theoretical analysis, which can effectively compensate the above-mentioned drawbacks.
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