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# Security
This is the security module of Vanetza. It implements the ETSI C-ITS security extension of the GeoNetworking protocol based on:
- `vanetza::security::v2` namespace: [ETSI TS 103 097 v1.2.1](http://www.etsi.org/deliver/etsi_ts/103000_103099/103097/01.02.01_60/ts_103097v010201p.pdf)
- `vanetza::security::v3` namespace: [ETSI TS 103 097 v1.3.1](https://www.etsi.org/deliver/etsi_ts/103000_103099/103097/01.03.01_60/ts_103097v010301p.pdf)
## Implemented Features
Most features are implemented, including:
- Security profiles including the CAM and DENM profile
- Certificate requests for unknown certificates of other stations
- Certificate validation for incoming messages
## Missing Features
There are a few missing features, but the overall implementation is in a working state to send and receive secured messages.
It has been verified to work correctly by interoperability tests with other implementations.
- Revocation checks for certificate authorities<br>
Certificates of CAs can be revoked via CRLs. There will be a new standard for the corresponding protocol in May 2018. It will be a new version of [ETSI TS 102 941](http://www.etsi.org/deliver/etsi_ts/102900_102999/102941/01.01.01_60/ts_102941v010101p.pdf).
- v2: region checks for polygonal and identified regions<br>
There are `TODO` notes in the code of `region.cpp` within the `is_within()` functions. Implementing these checks is non-trivial.
- v2: region consistency checks for regions other than circular and none region restrictions<br>
There are `TODO` notes in the code of `region.cpp` within the `is_within()` functions. Implementing these checks is non-trivial.
- v3: region checks for identified regions
- Certificate requests<br>
Currently there's no support to request authorization tickets from an authorization authority or to do an enrolment.