Wiki » History » Version 5
osmith, 04/08/2020 12:57 PM
link to current osmohlr branch
| 1 | 1 | osmith | h1. IMSI Pseudonymization |
|---|---|---|---|
| 2 | |||
| 3 | The IMSI Pseudonymization project will design a specification and provide a reference implementation of a mechanism to conceal the IMSI (international mobile subscriber identity) of a mobile subscriber on the radio interface. The IMSI is used to uniquely identify each subscriber in a (2G, 3G, 4G, 5G) cellular network. However, the privacy of users is not really well protected: current specification require to transfer the IMSI in plain-text at various times before an encrypted connection can be set up. The present project will specify, implement and evaluate a method by which the IMSI will be concealed on the air interface with no modifications to existing mobile phones or any network elements of the operator beyond the HLR/HSS (which implements the authentication on the network side). |
||
| 4 | |||
| 5 | 5 | osmith | Find the specification and SIM applet source code "here":https://gerrit.osmocom.org/plugins/gitiles/imsi-pseudo. The related OsmoHLR branch is "here":https://git.osmocom.org/osmo-hlr/log/?h=osmith/imsi-pseudo. |
| 6 | |||
| 7 | This project is "funded by NLnet and the NGI0 PET Fund":https://nlnet.nl/project/IMSI-pseudonymisation/. |
||
| 8 | 2 | osmith | |
| 9 | h2. Stages |
||
| 10 | |||
| 11 | 4 | osmith | * Create draft specification |
| 12 | * Implement in Osmocom <-- we're here |
||
| 13 | 2 | osmith | * Update specification with experience from implementation |
| 14 | * Submit proposal for optional IMSI pseudonymization into the 3GPP standardization process |
||
| 15 | 3 | neels | |
| 16 | h2. Pages |
||
| 17 | |||
| 18 | * [[Baseband behavior on IMSI change]] |
