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Update readme
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README.md
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README.md
@ -54,6 +54,9 @@ The devices need to be initialized:
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* Get infections from DB, Check their signatures
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* Secure GATT services and authentication of base statation in general
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* Read keys form national databases
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* Functions to extract keys from googles official [exposure key export file format](https://developers.google.com/android/exposure-notifications/exposure-key-file-format) are already implemented
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* For full integration the keys have to be downloaded from the national servers (due to limited memory an intermediate server which provides small batches of keys is advised)
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* Also the keys have to checked against the stored contacts (for this the `process_key`-function in `extract_keys.c` has to be implemented)
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### Extract Keys from Device
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In case of an infection, the keys need to be extracted from the device:
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@ -90,4 +93,10 @@ A basic visual interface based on LVGL is included.
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It can be tested on POSIX-compliant platforms by building it with the `zephyr/build_native.sh` script.
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SDL must be installed to provide a virtual display.
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![No risk contacts](img/display_no_risk.png) ![Low risk](img/display_low_risk.png) ![High risk](img/display_high_risk.png)
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![No risk contacts](img/display_no_risk.png) ![Low risk](img/display_low_risk.png) ![High risk](img/display_high_risk.png)
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## Exposure Key Extraction
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Exposure keys can be unpacked from their protocol buffer.
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The unpacking can be tested, by setting the `TEST_UNPACK_KEYS=y` and `TEST_UNPACK_KEYS_N=n` config variables.
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The test will run first thing at startup and output the time, it took unpacking and iterating over the keys.
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