nhscontactapp
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nhscontactapp [2020/05/06 07:14] – mark | nhscontactapp [2020/05/06 10:22] (current) – [How is the unique ID generated] mark | ||
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The NHS contact tracing app uses Bluetooth Low Energy to transmit a unique ID, this ID is changed at a periodic interval. This topic details questions about how this process works with the intention to find answers. | The NHS contact tracing app uses Bluetooth Low Energy to transmit a unique ID, this ID is changed at a periodic interval. This topic details questions about how this process works with the intention to find answers. | ||
- | ====== How is the unique ID generated ====== | + | ===== How is the unique ID generated ===== |
There are two main options, the first is a seed that is " | There are two main options, the first is a seed that is " | ||
- | ====== How often is the Unique ID changed ====== | + | From https:// |
+ | It looks like a seed is used. | ||
- | To prevent tracking | + | "Every day, your device generates |
- | ====== Does The contact app exchange values ====== | ||
- | This is a very important question. If the app just records the beacons it sees without performing any additional authentication, | + | ===== How often is the Unique ID changed ===== |
+ | To prevent tracking a user through space, the Unique ID is changed, how often effects the exposure. For example if its changed on every transmission, | ||
+ | ===== Does The contact app exchange values ===== | ||
+ | |||
+ | |||
+ | This is a very important question. If the app just records the beacons it sees without performing any additional authentication, | ||
+ | {{:: | ||
+ | This attack can be simplified if the attacker has access to a known " |
nhscontactapp.1588749271.txt.gz · Last modified: 2020/05/06 07:14 by mark