Hardware Security - Week 6

1. the endorsement key in TPM is a non-migratable key.

• True

2. If the user provides the same password to different TPM chips, the same storage root key will be created.

• False
• SRK also depends on EK, which will be different for different TPM chips.

 3. all the TPM migratable keys are generated outside the TPM and thus they cannot be trusted.

• False
• MK can be generated both inside and outside of a TPM. It will be considered trusted by its creator.

4. Which of the followings are functions of TPM?

• generate and store cryptographic keys
• generate pseudo-random numbers
• store user passwords, encryption keys and digital certificates

5. Which of the following PUFs are memory based.

• Butterfly PUF
• SRAM PUF

6. Which of the following methods can make the RO PUF more reliable?

• Run the RO pairs for a longer time.
• Use error correction coding to correct the PUF bit flips.

7. Which of the following features make the configurable RO PUF reliable?

• Inverters that are sensitive to temperature or supply voltage can be excluded.
• The configuration vector is selected after the chip is fabricated.

8. Which of the followings need to be considered when a true random number generator (TRNG) is evaluated?

• complexity of implementing the TRNG
• the source of entropy for the TRNG
• power efficiency of the TRNG

9. When an FPGA system developer detects a hardware Trojan from the FPGA chip he has purchased, where the hardware Trojan may come from? 

• IP vendor whose IP is included in the FPGA chip
• Foundry that fabricates the FPGA chip    
• EDA tool vendor whose design tool is integrated in the FPGA design environment
• FPGA vendor who designed the FPGA chip                

10. When Bob purchases an FPGA-based system, which of the following security vulnerabilities and attacks he should consider.

• User's sensitive information leaking from the system
• Hardware Trojan inside the FPGA-based system