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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Key Management & Secure Protocols | 10% | - Key generation, storage, exchange, and destruction - Cryptographic attacks: brute force, birthday, man-in-the-middle - Secure protocols: TLS/SSL, IPsec, SSH, PGP |
| Topic 2: Cryptography Fundamentals | 20% | - Historical evolution and modern applications - Core goals: confidentiality, integrity, authentication, non-repudiation - Basic terminology: plaintext, ciphertext, algorithm, key |
| Topic 3: Hash Functions & Data Integrity | 15% | - Properties: collision resistance, one-way function - Uses: integrity checks, password storage, message authentication - Algorithms: SHA-1, SHA-256, SHA-3, MD5 - HMAC construction and application |
| Topic 4: 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 |
| Topic 5: Implementation & Best Practices | 5% | - Selecting appropriate algorithms and key sizes - Standards and compliance - Common mistakes and vulnerabilities |
| Topic 6: Symmetric Encryption | 25% | - Key generation, distribution, and management challenges - Algorithms: AES, DES, 3DES, Blowfish - Principles and operation - Block vs stream ciphers, modes of operation (ECB, CBC, OFB, CFB) |
>> Introduction-to-Cryptography Exam Material <<
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NEW QUESTION # 13
(Why should an administrator choose lightweight cryptography?)
Answer: B
Explanation:
Lightweight cryptography is designed for constrained environments-devices with limited CPU, memory, storage, bandwidth, and power (battery). Examples include IoT sensors, smart locks, RFID tags, embedded controllers, and industrial devices. Administrators choose lightweight algorithms and protocols to maintain reasonable security while fitting strict resource budgets and real-time constraints.
The goal is not "weaker security because data is unimportant," but rather efficient security that can still meet threat models under constraints. Option B captures this: embedded systems often cannot afford the computational cost of heavy cryptographic primitives (large key sizes, complex modes, frequent handshakes) or may struggle with latency and energy consumption. Option A is irrelevant because physical security of a desktop doesn't remove the need for cryptography in communications or storage. Option C is the opposite of lightweight design. Option D is a poor justification; security design should be based on risk, and lightweight cryptography is not merely for "minimal protection," but for practical deployability under constraints. Therefore, the correct reason is limited resources on embedded systems.
NEW QUESTION # 14
(Which type of exploit involves looking for different inputs that generate the same hash?)
Answer: A
Explanation:
A birthday attack targets hash functions by exploiting the birthday paradox: collisions (two different inputs producing the same hash output) can be found much faster than brute-forcing a specific preimage. For an n-bit hash, the expected work t o find any collision is on the order of 2
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