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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Hash Functions & Data Integrity | 15% | - Properties: collision resistance, one-way function - Algorithms: SHA-1, SHA-256, SHA-3, MD5 - HMAC construction and application - Uses: integrity checks, password storage, message authentication |
| Topic 2: Asymmetric Encryption & Public Key Infrastructure | 25% | - Algorithms: RSA, ECC, Diffie-Hellman - PKI components: certificates, CAs, trust models - Principles: public/private key pairs - Certificate lifecycle: creation, validation, revocation - Digital signatures: purpose and process |
| Topic 3: Implementation & Best Practices | 5% | - Common mistakes and vulnerabilities - Selecting appropriate algorithms and key sizes - Standards and compliance |
| Topic 4: Symmetric Encryption | 25% | - Principles and operation - Block vs stream ciphers, modes of operation (ECB, CBC, OFB, CFB) - Key generation, distribution, and management challenges - Algorithms: AES, DES, 3DES, Blowfish |
| Topic 5: Cryptography Fundamentals | 20% | - Core goals: confidentiality, integrity, authentication, non-repudiation - Historical evolution and modern applications - Basic terminology: plaintext, ciphertext, algorithm, key |
| Topic 6: Key Management & Secure Protocols | 10% | - Cryptographic attacks: brute force, birthday, man-in-the-middle - Key generation, storage, exchange, and destruction - Secure protocols: TLS/SSL, IPsec, SSH, PGP |
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NEW QUESTION # 87
(What is the length (in bits) of a SHA-1 hash output?)
Answer: A
Explanation:
SHA-1 (Secure Hash Algorithm 1) produces a fixed-size output of 160 bits (20 bytes). Hash output size matters in cryptography because it influences collision resistance and the effort required for various attacks.
For an ideal n-bit hash, finding a collision by generic means is expected around 2
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