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WGU Introduction-to-Cryptography Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Cryptography Fundamentals | 20% | - Basic terminology: plaintext, ciphertext, algorithm, key - Core goals: confidentiality, integrity, authentication, non-repudiation - Historical evolution and modern applications |
| Key Management & Secure Protocols | 10% | - Key generation, storage, exchange, and destruction - Secure protocols: TLS/SSL, IPsec, SSH, PGP - Cryptographic attacks: brute force, birthday, man-in-the-middle |
| Asymmetric Encryption & Public Key Infrastructure | 25% | - Digital signatures: purpose and process - Certificate lifecycle: creation, validation, revocation - PKI components: certificates, CAs, trust models - Principles: public/private key pairs - Algorithms: RSA, ECC, Diffie-Hellman |
| Implementation & Best Practices | 5% | - Selecting appropriate algorithms and key sizes - Standards and compliance - Common mistakes and vulnerabilities |
| Symmetric Encryption | 25% | - Algorithms: AES, DES, 3DES, Blowfish - Block vs stream ciphers, modes of operation (ECB, CBC, OFB, CFB) - Principles and operation - Key generation, distribution, and management challenges |
| Hash Functions & Data Integrity | 15% | - Uses: integrity checks, password storage, message authentication - Algorithms: SHA-1, SHA-256, SHA-3, MD5 - Properties: collision resistance, one-way function - HMAC construction and application |
WGU Introduction to Cryptography HNO1 Sample Questions:
(How can auditing enhance an organization ' s cryptographic practices?)
- A. It eliminates the need for regular policy updates.
- B. It identifies weaknesses in current practices.
- C. It guarantees that no security incidents will occur.
- D. It ensures all employees are trained in cryptography.
Correct Answer: B 🗳️
(An organization wants to digitally sign its software to guarantee the integrity of its source code. Which key should the customer use to decrypt the digest of the source code?)
- A. Organization's public key
- B. Organization's private key
- C. Customer's private key
- D. Customer's public key
Correct Answer: A 🗳️
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(What describes how Counter (CTR) mode encryption functions?)
- A. Uses a self-synchronizing stream cipher where the IV is encrypted and XORed with the data stream one bit at a time
- B. Encrypts each block with the same key, where each block is independent of the others
- C. Uses an IV to encrypt the first block, then uses the result of the encryption to encrypt the next block
- D. Converts the block cipher into a stream cipher, then uses a counter value and a nonce to encrypt the data
Correct Answer: D 🗳️
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(Which component is used to verify the integrity of a message?)
- A. IV
- B. HMAC
- C. TKIP
- D. AES
Correct Answer: B 🗳️
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(What is the correlation between the number of rounds and the key length used in the AES algorithm?)
- A. The number of rounds decreases as the key length increases.
- B. The number of rounds is the same regardless of the key length.
- C. The key length is the same regardless of the number of rounds.
- D. The number of rounds increases as the key length increases.
Correct Answer: D 🗳️
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