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| Section | Objectives |
|---|---|
| Symmetric Cryptography | - Block Ciphers (AES, DES, 3DES) - Stream Ciphers - Key Management - Initialization Vectors (IV) |
| Cryptanalysis and Attacks | - Common Attack Vectors - Brute Force and Dictionary Attacks - Social Engineering Prevention |
| Cryptography Fundamentals | - Cryptographic Terminology - History and Evolution of Cryptography - Symmetric vs Asymmetric Encryption |
| Hashing and Digital Signatures | - Hash Functions (MD5, SHA-1, SHA-256) - Digital Signature Standards - Message Authentication Codes (MAC) |
| Applied Cryptography | - VPN Security - PGP and Email Encryption - Cryptographic Best Practices - SSL/TLS Protocols |
| Asymmetric Cryptography | - RSA Algorithm - Elliptic Curve Cryptography (ECC) - Public Key Infrastructure (PKI) - Diffie-Hellman Key Exchange |
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NEW QUESTION # 81
(How does a cryptographic policy contribute to incident response?)
Answer: C
Explanation:
A cryptographic policy defines how encryption, keys, certificates, and integrity mechanisms are used and managed across an organization. During incident response, that policy becomes a playbook for making safe, consistent decisions under pressure. It can specify how to rotate or revoke compromised keys, how to validate and reissue certificates, how to preserve evidence integrity with hashing, and how to securely communicate sensitive incident details (e.g., using approved encrypted channels). It can also define backup encryption requirements and key escrow or recovery procedures, enabling secure data recovery without exposing protected data. Policies typically outline roles and responsibilities (who can access keys, who can approve rekeying), logging requirements, and escalation steps-reducing confusion and preventing ad hoc crypto changes that might worsen exposure. The goal is not to limit encryption; it is to ensure cryptography is used correctly to contain and remediate incidents. Therefore, providing guidelines for secure recovery and communication is the correct contribution of cryptographic policy to incident response.
NEW QUESTION # 82
(Why is lightweight cryptography important in modern information security?)
Answer: A
Explanation:
Lightweight cryptography is important because many modern systems operate in constrained environments- IoT sensors, embedded controllers, wearables, and mobile devices-where CPU, memory, storage, bandwidth, and battery power are limited. Traditional "heavy" cryptographic suites may be too slow, too energy-intensive, or too large in code footprint for these platforms, leading to insecure workarounds or disabling security entirely. Lightweight cryptographic primitives and profiles are designed to deliver strong security properties (confidentiality and integrity, often via AEAD) while fitting within tight resource budgets and real-time constraints. This is essential as IoT and mobile ecosystems expand, increasing the attack surface and the consequences of compromised devices (botnets, surveillance, physical safety risks). Lightweight cryptography is not meant to "limit encryption tools" or complicate protection; it enables practical, deployable security where otherwise implementations might be weak or absent. High-speed network communication can benefit from efficient crypto too, but the defining modern driver is constrained-device security. Therefore, the correct reason is addressing the security needs of IoT devices and mobile applications.
NEW QUESTION # 83
(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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