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IP Communications and Services for NGN
book

IP Communications and Services for NGN

by Johnson I Agbinya
December 2009
Intermediate to advanced content levelIntermediate to advanced
411 pages
12h 24m
English
Auerbach Publications
Content preview from IP Communications and Services for NGN
WiMAX: Worldwide Interoperability for Microwave Access 63
Message 1: BS SS:SeqNo||SAID||HMAC(1)
Computation of HMAC (1) is used by the SS to detect forgeries in the network.
Message 2 is issued by the SS to request SA parameters:
Message 2: SS BS:SeqNo||SAID||HMAC(2)
For this message, the SS takes its SAID from the authorization protocol SAIDList.
Separate Message 2 is used for different SAs. By computing HMAC (2), the BS can
detect forgeries in the network. A valid HMAC (2) authenticates SS to BS.
If HMAC (2) is valid and SAID identifies one of the SS’s SA, then the BS uses
Message 3 to create and configure an SA:Message 3: BS SS:SeqNo||
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Publisher Resources

ISBN: 9781420070910