1. PUF Based on ADCs
Anand Baskaran| Sai Janani Ramachandran
KTH Royal Institute ofTechnology, Sweden

2. Project Goal…….
On a mission to find Fingerprints of a Electronic Devices.

3. What is PUF?
Physically Uncloneable Functions
Electronic Fingerprint
Technical Limitations in Silicon
Fabrication

4. Why PUF?

5. Why PUF?

6. Why PUF?

7. Existing PUF
NXP– Commercial PUFs
Next generation smartcards

8. What are we trying to do?
 Give a random challenge to the
hardware
 Process the challenge with the
infrastructure and send back the
result
 Use the result to identify the
right infrastructure
What Infrastructure to choose?

9. ADC - DAC
Why this?

10. WeWorkWith…
C-Mote boards from CDAC
MSP430F2618
2 ADC & 2 DAC

11. WeWorkWith…
Code Composer Studio
Matlab

12. Block Diagram
[****]2000
2000 Random
Hex will be
generated
Universal
Asynchronous
Transmission
UART
•Receive
•Transfer to DAC
DAC
•Generate Analog signal
•Short the signal to ADC
ADC
•Get digital values
•Transfer to UART Tx Buffer
UART
•Transmit data to Matlab

13. Roadmap
PUF Understanding
Hardware
Implementation
Communication
(board to computer)
Automation in Matlab
Result Analysis

14. Results!

15. Input Output for Ramp signal

16. Output of two boards

17. Difference in the output of two boards

18. FutureWork
Scalability
Compatibility
Hardware cryptography

19. Special thanks to
Chester Robeiro
Venkatraman
Shankar Raman M J
Johnny Öberg

20. Thank you!