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WGU Introduction-to-Cryptography Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| 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 |
| Symmetric Encryption | 25% | - Key generation, distribution, and management challenges - Principles and operation - Block vs stream ciphers, modes of operation (ECB, CBC, OFB, CFB) - Algorithms: AES, DES, 3DES, Blowfish |
| Hash Functions & Data Integrity | 15% | - Uses: integrity checks, password storage, message authentication - Properties: collision resistance, one-way function - HMAC construction and application - Algorithms: SHA-1, SHA-256, SHA-3, MD5 |
| Asymmetric Encryption & Public Key Infrastructure | 25% | - PKI components: certificates, CAs, trust models - Digital signatures: purpose and process - Certificate lifecycle: creation, validation, revocation - Algorithms: RSA, ECC, Diffie-Hellman - Principles: public/private key pairs |
| Implementation & Best Practices | 5% | - Standards and compliance - Selecting appropriate algorithms and key sizes - Common mistakes and vulnerabilities |
| Cryptography Fundamentals | 20% | - Historical evolution and modern applications - Core goals: confidentiality, integrity, authentication, non-repudiation - Basic terminology: plaintext, ciphertext, algorithm, key |
WGU Introduction to Cryptography HNO1 Sample Questions:
1. (Why should an asymmetric private key be used to encrypt the digest of an application?)
A) An asymmetric private key uses the same key to encrypt and decrypt large amounts of media, one bit at a time.
B) An asymmetric private key encrypts and decrypts data in blocks of characters at a time with a complex algorithm.
C) An asymmetric private key signs files by signing (encrypting) the hash of a file so integrity and authenticity can be verified with the corresponding public key.
D) An asymmetric private key encrypts a small amount of information, which is decrypted with the corresponding private key.
2. (What is the correlation between the number of rounds and the key length used in the AES algorithm?)
A) The number of rounds increases as the key length increases.
B) The key length is the same regardless of the number of rounds.
C) The number of rounds is the same regardless of the key length.
D) The number of rounds decreases as the key length increases.
3. (Which encryption algorithm encrypts with one key, decrypts with another key, and then encrypts with the first key?)
A) IDEA
B) 3DES
C) DES
D) AES
4. (Which attack may take the longest amount of time to achieve success?)
A) Brute-force
B) Dictionary
C) Birthday
D) Rainbow table
5. (Which lesson can be learned from organizations that experience breaches due to poor cryptographic practices?)
A) Security measures should be secondary to business objectives.
B) Comprehensive risk assessments are vital for identifying potential vulnerabilities.
C) Employee training is not relevant for preventing breaches.
D) Regular audits and updates are unnecessary.
Solutions:
| Question # 1 Answer: C | Question # 2 Answer: A | Question # 3 Answer: B | Question # 4 Answer: A | Question # 5 Answer: B |



