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ExamsGCIHQuestions#289
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GCIH · Question #289

GCIH Question #289: Real Exam Question with Answer & Explanation

The correct answer is A: The distortion technique. Victor is using the Distortion Technique. In this steganography method, the sender modifies (distorts) the cover object in a specific way to encode the secret message. The receiver recovers the hidden information by comparing the received (modified) stego object against the origi

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Question

Victor wants to send an encrypted message to his friend. He is using certain steganography technique to accomplish this task. He takes a cover object and changes it accordingly to hide information. This secret information is recovered only when the algorithm compares the changed cover with the original cover. Which of the following Steganography methods is Victor using to accomplish the task?

Options

  • AThe distortion technique
  • BThe spread spectrum technique
  • CThe substitution technique
  • DThe cover generation technique

Explanation

Victor is using the Distortion Technique. In this steganography method, the sender modifies (distorts) the cover object in a specific way to encode the secret message. The receiver recovers the hidden information by comparing the received (modified) stego object against the original, unmodified cover object - the differences between the two reveal the embedded data. This distinguishes it from the Substitution Technique (which replaces least-significant bits with secret data, requiring no original cover for extraction), the Spread Spectrum Technique (which spreads hidden data across the cover using a key), and the Cover Generation Technique (which generates a new cover object designed specifically to carry the secret data).

Topics

#steganography#distortion technique#cover object#information hiding

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