Progress Report: Smart Home NFC Setup

Bernd Busse

Supervisor:	Florian Bache
Start Date:	15.03.18
End Date:	12.07.18

# Overview

### Employ **NFC** to set up new smart home devices with one's smartphone.

* Develop a protocol for this applicaiton:
    - *Secure* integration into existing infrastructure.
* Proof-of-concept implementation on *Android* and a *Raspberry Pi*.
    - Exchange *WiFi-SSID* and *WPA2-PSK*

Note:
- First presentation -> Short introduction
- Examine if and how NFC is applicable to configure smart home devices.
    - Existing methods like WiFi Hotspots or Bluetooth pairing
- Develop a protocol to securely configure devices over NFC (initial)
- Implement this protocol with *Android* and a *Rapsberry Pi*

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# Current Progress

### Mostly done

* Implementation works and devices can communicate with each other.
    - Encryption is not yet implemented.
* Paper is missing a conclusion and details about the protocol.

Note:
- Most stuff has been written
- Implementation works on both platforms
- Encryption and the like not yet done
- Paper is still missing details about the protocol messages

### Protocol Overview

1. Touch devices together
    - SH device contains an NDEF message with its ID and capabilities
2. User enters credentials to be configured
3. Touch devices together
    - Smartphone writes NDEF message with the configuration values

Note:
- Two steps: *Device Discovery* and *Device Configuration*
- Optionally encrypt the message contents
- The user verifies the device configuration
- Make sure we only allow subsequent configurations by the same device

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# Next Steps

* Protocol chapter and conclusion has to be finished
    - Explicit description of protocol messages and its contents
    - Countermeasures against different attackers
* Tweaking the implementation to handle messages correctly
    - New hardware just arrived
    - If the time allows: Add lightweight crypto

*Print the thesis and hand it in!*

Thank you for your attention!

Any questions?