Revision 2c8a19c1
Added by osmith about 4 years ago
| docs/imsi-pseudo-spec.adoc | ||
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even for a Mobile Virtual Network Operator (MVNO) to deploy this privacy |
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enhancement. |
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== Location Updating |
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=== Regular |
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== Summary of Existing Location Updating Procedures in RAN and CN |
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The SIM is provisioned with the IMSI (3GPP TS 23.008 section 2.1.9) and |
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cryptographic keys, that it uses to authenticate with the network. In the |
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ME <= BTS [label="Location Updating Accept"]; |
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ME => BTS [label="TMSI Reallocation Complete"]; |
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BTS => BSC [label="TMSI Reallocation Complete"]; |
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BSC => MSC [label="TMSI Reallocation Complete"]; |
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} |
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---- |
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=== With IMSI Pseudonymization |
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==== SIM Provisioning |
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==== Successful Location Update With Pseudonymous IMSI |
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==== Next Pseudonymous IMSI Arrives Via SMS |
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==== Error Handling |
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===== SMS is Lost |
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===== SMS Arrives Late |
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== Required Changes |
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=== SIM Provisioning |
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=== Successful Location Update With Pseudonymous IMSI |
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=== Next Pseudonymous IMSI Arrives Via SMS |
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== Implementation Notes |
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== Error Scenarios |
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=== Next Pseudonymous IMSI SMS is Lost |
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=== SMS Arrives Late |
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=== Source Code for Reference Implementation |
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=== ATT = 0 required |
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=== Warning the User if the IMSI Does Not Change |
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== Reference Implementation with Source Code |
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== Recommendations for Real-World Implementations |
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=== ATT = 0 |
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=== End to End Encryption of SMS |
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=== Warning the User if the IMSI Does Not Change |
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=== User-configurable Minimum Duration Between IMSI Changes |
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<<< |
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include::./common/chapters/gfdl.adoc[] |
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