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Question 432 - CAS-004 discussion

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An loT device implements an encryption module built within its SoC where the asymmetric private key has been defined in a write-once read-many portion of the SoC hardware Which of the following should the loT manufacture do if the private key is compromised?

A.
Use over-the-air updates to replace the private key
Answers
A.
Use over-the-air updates to replace the private key
B.
Manufacture a new loT device with a redesigned SoC
Answers
B.
Manufacture a new loT device with a redesigned SoC
C.
Replace the public portion of the loT key on its servers
Answers
C.
Replace the public portion of the loT key on its servers
D.
Release a patch for the SoC software
Answers
D.
Release a patch for the SoC software
Suggested answer: B

Explanation:

If the asymmetric private key defined in the write-once read-many (WORM) portion of the System on Chip (SoC) is compromised, the IoT device manufacturer cannot simply replace or update the key through software changes due to the nature of WORM memory. The compromised key would necessitate the production of a new IoT device with a redesigned SoC that includes a new, secure private key. This is because the integrity of the encryption module is fundamental to the device's security, and a compromised key cannot be allowed to persist in the hardware.

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asked 02/10/2024
gayathri devi
38 questions
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