59744
Crypto U12 (part 2), crypto
for mobile telecom
- GSM and UMTS key management
- generation
- user keys are generated
by SIM manufacturer
- user keys installed on SIM
- user keys are generated
by SIM manufacturer
- establishment
- established with
user X when SIM is
given to the user
- user key is also given
to carrier by the SIM
manufacturer
- established with
user X when SIM is
given to the user
- storage
- user key is stored on tamper resistant SIM
- session keys (encryption and MAC) thrown away after each use
- user key is stored on tamper resistant SIM
- usage
- user key only exposed
briefly to encryt challenge
response to base station
- user key only exposed
briefly to encryt challenge
response to base station
- generation
- key hiearchy diagram
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