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neels, 02/25/2020 06:50 PM
IMSI Pseudonymization¶
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).
Find drafts and source code here. This project is funded by NLnet and the NGI0 PET Fund.
Stages¶
- Create draft specification <-- we're here
- Implement in Osmocom
- Update specification with experience from implementation
- Submit proposal for optional IMSI pseudonymization into the 3GPP standardization process
Pages¶
Updated by neels about 4 years ago · 3 revisions