Crucial Exams

ISC2 Certified Secure Software Lifecycle Professional (CSSLP) Practice Question

A family of battery-powered IoT sensors downloads plaintext configuration files over HTTP from a public mirror. Security policy requires each sensor to detect any unauthorized modification of a file before it is applied. Confidentiality is not a concern, and the solution should impose no key-management burden on the devices. Which technique should the software engineer implement to satisfy the policy?

  • Require mutual TLS between the mirror and every sensor for each download.

  • Publish a SHA-256 hash for each file and have the sensor recompute and compare the hash before applying the configuration.

  • Encrypt each configuration file with AES-256-GCM before publishing it to the mirror.

  • Sign each configuration file with an RSA private key and have the sensor verify the signature before use.

ISC2 Certified Secure Software Lifecycle Professional (CSSLP)
Secure Software Concepts
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