Free SSCP Cryptography Practice Test 2026 — ISC2 Questions

This free SSCP Cryptography practice test covers applied cryptography — symmetric and asymmetric encryption, hashing and digital signatures, PKI and certificate management, key management, and secure protocols like TLS and IPsec. Each question includes a detailed explanation written from an operational security perspective — perfect for ISC2 SSCP exam prep.

Key Topics in SSCP Cryptography

Free SSCP Cryptography Practice Questions with Answers

Each question below includes 4 answer options, the correct answer, and a detailed explanation. These are real questions from the FlashGenius SSCP question bank for the Cryptography domain (9% of the exam).

Sample Question 1 — Cryptography

You are a security practitioner responsible for securing data in transit on your company's internal network. Recently, a vulnerability was discovered in the encryption protocol currently in use. You have been tasked with implementing a more secure protocol. Which of the following steps should you take to ensure secure communication between Windows and Linux systems?

  1. A. Implement TLS 1.3 across all systems and update configurations to enforce its use. (Correct answer)
  2. B. Switch to using SSL 3.0 as it is less vulnerable to modern attacks.
  3. C. Use a proprietary encryption algorithm developed in-house to avoid known vulnerabilities.
  4. D. Continue using the current protocol but increase the key length to improve security.

Correct answer: A

Explanation: TLS 1.3 is the latest version of the Transport Layer Security protocol and provides improved security features over older versions, reducing the risk of vulnerabilities. Option B is incorrect because SSL 3.0 is outdated and vulnerable to several attacks. Option C is incorrect because proprietary algorithms are often not peer-reviewed and can contain unrecognized vulnerabilities. Option D is incorrect because simply increasing key length does not address protocol vulnerabilities.

Sample Question 2 — Cryptography

During a routine security audit, you discover that sensitive data stored on a Linux server is not encrypted. To comply with your organization's security policy, you need to encrypt this data at rest. Which of the following actions should you take to ensure the data is properly encrypted while minimizing disruption to operations?

  1. A. Implement full disk encryption using LUKS and schedule a maintenance window to apply it. (Correct answer)
  2. B. Use a simple XOR cipher to encrypt the files as it is fast and easy to implement.
  3. C. Encrypt the data using a symmetric key algorithm and store the key on the same server for easy access.
  4. D. Compress the data to save space and then use a password-protected ZIP file for encryption.

Correct answer: A

Explanation: Full disk encryption with LUKS (Linux Unified Key Setup) is a robust and widely used method for encrypting data at rest on Linux systems. Scheduling a maintenance window ensures minimal disruption. Option B is incorrect because XOR is not a secure encryption method. Option C is incorrect as storing the key on the same server compromises security. Option D is incorrect because ZIP file encryption is not as secure as full disk encryption and can be bypassed if the password is weak.

Sample Question 3 — Cryptography

You are a security practitioner tasked with implementing a secure email communication system for your organization. The system must ensure confidentiality, integrity, and non-repudiation of emails. Which of the following cryptographic solutions best meets these requirements?

  1. A. Use PGP for encrypting emails and digital signatures for authentication. (Correct answer)
  2. B. Implement SSL/TLS for email transmission and rely on server logs for non-repudiation.
  3. C. Use symmetric encryption for email content and hash functions for integrity.
  4. D. Deploy a VPN for secure email transmission and use MD5 for email integrity.

Correct answer: A

Explanation: PGP (Pretty Good Privacy) provides encryption for confidentiality, digital signatures for integrity and non-repudiation, making it the best choice. SSL/TLS is primarily for securing data in transit, not for non-repudiation. Symmetric encryption lacks non-repudiation, and MD5 is outdated for integrity checks.

Sample Question 4 — Cryptography

While reviewing the security of a web application, you discover that user passwords are stored using a simple hash function. To enhance security, which of the following changes should you implement?

  1. A. Replace the simple hash function with a salted hash using SHA-256. (Correct answer)
  2. B. Use symmetric encryption to store passwords securely.
  3. C. Implement a reversible encryption algorithm for password storage.
  4. D. Store passwords in plaintext but restrict database access.

Correct answer: A

Explanation: Salting passwords and using a secure hash function like SHA-256 adds significant security by preventing pre-computed attacks such as rainbow tables. Symmetric and reversible encryption are not suitable for password storage due to potential exposure of keys. Storing passwords in plaintext is insecure.

Sample Question 5 — Cryptography

Your organization uses a custom-developed application that requires secure key management for encrypting sensitive data. Which of the following is the most secure practice for managing encryption keys?

  1. A. Store encryption keys within the application code for easy access.
  2. B. Use a hardware security module (HSM) to manage and store encryption keys. (Correct answer)
  3. C. Store encryption keys in a database with access restricted to the application.
  4. D. Encrypt the keys with a master key and store them on the same server as the application.

Correct answer: B

Explanation: Using a hardware security module (HSM) is the most secure method for managing encryption keys, as it provides physical and logical protection. Storing keys in application code or databases can lead to exposure. Encrypting keys and storing them on the same server increases the risk of compromise.

Sample Question 6 — Cryptography

During a security audit, you are asked to verify the encryption method used for securing data at rest on a Linux server. Which of the following commands would you use to check the encryption status of a disk partition?

  1. A. lsblk -f
  2. B. cryptsetup status <device> (Correct answer)
  3. C. df -h
  4. D. mount | grep <device>

Correct answer: B

Explanation: The 'cryptsetup status <device>' command is used to check the encryption status of a disk partition, providing details about the encryption method and status. 'lsblk -f' lists filesystems, 'df -h' shows disk usage, and 'mount' displays mounted filesystems, none of which provide encryption details.

How to Study SSCP Cryptography

Combine these SSCP Cryptography practice questions with the official ISC2 study guide. Since October 2025 the SSCP uses adaptive CAT testing — one pass, no reviewing answers — so practice scenario-based judgment under timed conditions rather than memorizing definitions.

Frequently Asked Questions about SSCP Cryptography

What does the SSCP Cryptography domain cover?

SSCP Cryptography covers applied cryptography — symmetric and asymmetric encryption, hashing and digital signatures, PKI and certificate management, key management, and secure protocols like TLS and IPsec. Expect scenario-based questions covering Symmetric & Asymmetric Encryption, Hashing & Digital Signatures, PKI & Certificates, TLS & IPsec, Key Management, Cryptographic Attacks.

How many Cryptography practice questions are on this page?

This free practice set includes SSCP Cryptography questions with detailed explanations. Premium members get unlimited access to the full SSCP question bank across all 7 domains.

What weight does Cryptography have on the SSCP exam?

Cryptography accounts for 9% of the ISC2 SSCP exam content.

Is this SSCP Cryptography practice test free?

Yes. The practice test is completely free with no signup required. You get instant scoring and detailed explanations for every question.

About the ISC2 SSCP Exam

Other SSCP Domains

Start the free SSCP Cryptography practice test now | 10-question quick start | All SSCP domains | Get Premium Access