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neels, 02/25/2020 06:50 PM
1 | 1 | osmith | h1. IMSI Pseudonymization |
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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). |
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5 | 2 | osmith | Find drafts and source code "here":https://gerrit.osmocom.org/plugins/gitiles/imsi-pseudo. This project is "funded by NLnet and the NGI0 PET Fund":https://nlnet.nl/project/IMSI-pseudonymisation/. |
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7 | h2. Stages |
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9 | * Create draft specification <-- we're here |
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10 | * Implement in Osmocom |
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11 | * Update specification with experience from implementation |
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12 | * Submit proposal for optional IMSI pseudonymization into the 3GPP standardization process |
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13 | 3 | neels | |
14 | h2. Pages |
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16 | * [[Baseband behavior on IMSI change]] |