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Difficulty: EasyCryptographic Concepts and Algorithms

A security administrator is configuring disk-level encryption for an enterprise storage network containing high-volume database files. The encryption solution must provide data confidentiality for bulk data while maintaining fast processing speeds and low performance overhead. Which of the following cryptographic approaches is best suited for this task?

  1. Symmetric encryption algorithmAnswer
  2. B
    Asymmetric encryption algorithm
  3. C
    Cryptographic hash function
  4. D
    Diffie-Hellman key exchange protocol

Answer

Symmetric encryption algorithm
Symmetric encryption algorithms use a single secret key for both encryption and decryption operations. Their low mathematical complexity yields very high execution speed, making symmetric encryption the standard approach for bulk data-at-rest protection.

Step-by-Step Solution

1
Identify the primary requirement in the scenario
The system requires high-speed bulk data confidentiality at rest with low computational overhead.
Bulk storage encryption must process massive amounts of data without causing throughput bottlenecks.
2
Evaluate the algorithm categories against performance requirements
Symmetric algorithms (such as AES) perform encryption and decryption rapidly using a single key, making them ideal for bulk data.
Asymmetric encryption is computationally heavy, hashing is non-reversible, and Diffie-Hellman is a key exchange method rather than a data encryption algorithm.

Key Concept

Symmetric vs. Asymmetric Encryption Use Cases
Estimated Time:45s
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Topics

Cryptographic Concepts and Algorithms

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