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The authors first discuss the basic cellular digital packet data (CDPD) architecture and its authentication protocols. They then present threats to the network. Next, they investigate the basic requirements of the security architecture and goals in light of attacks. Then they present the improved authentication protocol in operation, and how it deals with faults. Next, they add authenticated key exchange for confidentiality, followed by anonymity provisions. Then, they summarize the design and present the complete protocol, and identify which protocol transmissions goes on which CDPD message. Finally, they present further issues and concerns that are beyond the scope of this protocol.>
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Frankel et al. (1995) studied this question.
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