The correct remediation is to move the encryption key to a hardware security module (HSM) accessible only via authenticated API calls. This physically separates the key from the encrypted data, eliminating the co-location vulnerability that file permissions alone cannot address, because an attacker who compromises the database server can read the configuration file regardless of its permissions. HSMs provide tamper-resistant, dedicated key storage and enforce strict access controls, which directly aligns with HIPAA’s requirement for protecting electronic protected health information (ePHI) through proper encryption key management. On the Systems Security Certified Practitioner (SSCP) exam, this scenario tests your understanding of the cryptographic key lifecycle and the principle of separation of duties—a common trap is assuming file permissions are sufficient, when the real issue is physical or logical separation. Remember the mnemonic “HSM = Hard Separation of Keys and Data” to recall that HSMs break the co-location chain.
SSCP Cryptography Practice Question
This SSCP practice question tests your understanding of cryptography. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A healthcare organization stores patient records in a database that is encrypted at rest using AES-256-CBC. The encryption key is stored in a plaintext configuration file on the database server, with file permissions set to read-only for the database service account and administrators. During an internal audit, the security team flags this as a critical vulnerability because the key is co-located with the encrypted data. The system administrator argues that the file permissions are sufficient to prevent unauthorized access. Separately, the organization must comply with HIPAA requirements for encryption key management. Which remediation most effectively addresses the vulnerability and meets compliance requirements?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Move the encryption key to a hardware security module (HSM) accessible only via authenticated API calls.
Option C is correct because moving the encryption key to a hardware security module (HSM) physically separates the key from the encrypted data, eliminating the co-location vulnerability. HSMs provide tamper-resistant key storage and enforce access controls via authenticated API calls, which aligns with HIPAA requirements for proper key management and protection of electronic protected health information (ePHI).
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Change the encryption algorithm from AES-256-CBC to AES-256-GCM.
Why it's wrong here
This changes the cipher mode but does not address the key storage vulnerability.
✗
Implement file integrity monitoring (FIM) on the configuration file to alert on unauthorized access.
Why it's wrong here
FIM is detective, not preventive; it does not protect the key from being read.
✓
Move the encryption key to a hardware security module (HSM) accessible only via authenticated API calls.
Why this is correct
An HSM provides tamper-resistant key storage and meets compliance requirements.
Related concept
Read the scenario before looking for a memorised answer.
✗
Encrypt the configuration file containing the key with a second AES-256 key stored in the same directory.
Why it's wrong here
This still stores the key on the same server; an attacker could access both keys.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse encryption algorithm improvements (like GCM) or monitoring controls (like FIM) with proper key management, failing to recognize that co-location of the key with the data is the core vulnerability that must be addressed by physical or logical separation.
Detailed technical explanation
How to think about this question
An HSM is a dedicated hardware device that generates, stores, and manages cryptographic keys in a secure, tamper-resistant environment. Keys never leave the HSM in plaintext; applications interact with the HSM via authenticated APIs (e.g., PKCS#11, KMIP) to perform encryption/decryption operations. This architecture ensures that even if the database server is fully compromised, the encryption key remains protected within the HSM, meeting HIPAA's requirement for 'reasonable and appropriate' safeguards for key management under 45 CFR § 164.312(e)(1).
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A developer is choosing between AES-256 (symmetric) and RSA-2048 (asymmetric) for encrypting a large file that will be sent to a partner. Symmetric encryption is fast but requires key exchange; asymmetric is slower but solves the key distribution problem. A hybrid approach — encrypt the file with AES, encrypt the AES key with RSA — is standard. Questions like this test whether you understand when each approach applies.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Cryptography — This question tests Cryptography — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Move the encryption key to a hardware security module (HSM) accessible only via authenticated API calls. — Option C is correct because moving the encryption key to a hardware security module (HSM) physically separates the key from the encrypted data, eliminating the co-location vulnerability. HSMs provide tamper-resistant key storage and enforce access controls via authenticated API calls, which aligns with HIPAA requirements for proper key management and protection of electronic protected health information (ePHI).
What should I do if I get this SSCP question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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