GPRS System Key Enhancement Method, SGSN Device, UE, HLR/HSS, and GPRS System
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United States of America Patent
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Oct 6, 2017
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Apr 8, 2015
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A GPRS system key enhancement method, an SGSN device, UE, and a GPRS system are provided. The method includes: receiving, by the SGSN, a request message sent by the UE; acquiring, by the SGSN, an authentication vector including a first ciphering key and a first integrity key from the HLR/HSS; when the SGSN determines that the UE is UE of a first type, selecting a ciphering algorithm and an integrity algorithm for the UE, and sending the selected ciphering algorithm and the selected integrity algorithm to the UE; and computing, by the SGSN, a second ciphering key and a second integrity key according to the first ciphering key and the first integrity key.
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