ISC2 Certified Secure Software Lifecycle Professional (CSSLP) Practice Question
Your development team must ensure that a critical code-signing private key cannot be recovered by any single administrator or by anyone who gains access to one stored fragment. They also need the key to be recoverable during a disaster as long as at least three of five designated team leads are available. Which control BEST satisfies these requirements?
Store the private key inside a hardware security module that requires individual administrator passwords for access.
Implement a (3,5) Shamir secret sharing scheme to distribute the private key among the five team leads.
Encrypt the private key with AES-256 and keep a single encrypted backup copy in an off-site safe.
Place the private key in a centralized vault protected by multi-factor authentication and audit logging.
A threshold secret-sharing solution such as a (3,5) Shamir secret sharing scheme divides the private key into five unique shares and requires any three shares to reconstruct the original key. No single share is sufficient, so a lone administrator or attacker cannot recover the key, fulfilling split-knowledge and segregation-of-duties objectives. A password-protected HSM, multi-factor vault access, or single encrypted backup still leaves the entire key accessible once the sole protection is bypassed, so they do not enforce the same multi-party control or split-knowledge guarantees.
Ask Bash
Bash is our AI bot, trained to help you pass your exam. AI Generated Content may display inaccurate information, always double-check anything important.
How does Shamir Secret Sharing work?
Open an interactive chat with Bash
What is the benefit of a (3,5) configuration in Shamir Secret Sharing?
Open an interactive chat with Bash
Why are vaults and hardware security modules less effective for this scenario?
Open an interactive chat with Bash
ISC2 Certified Secure Software Lifecycle Professional (CSSLP)
Secure Software Concepts
Your Score:
Report Issue
Bash, the Crucial Exams Chat Bot
AI Bot
Loading...
Loading...
Loading...
Pass with Confidence.
IT & Cybersecurity Package
You have hit the limits of our free tier, become a Premium Member today for unlimited access.
Military, Healthcare worker, Gov. employee or Teacher? See if you qualify for a Community Discount.
Monthly
$19.99
$19.99/mo
Billed monthly, Cancel any time.
3 Month Pass
$44.99
$14.99/mo
One time purchase of $44.99, Does not auto-renew.
MOST POPULAR
Annual Pass
$119.99
$9.99/mo
One time purchase of $119.99, Does not auto-renew.
BEST DEAL
Lifetime Pass
$189.99
One time purchase, Good for life.
What You Get
All IT & Cybersecurity Package plans include the following perks and exams .