What is the primary purpose of encryption in confidentiality?

What is the primary purpose of encryption in confidentiality?

• A. It encodes data so that only authorized parties can read it
• B. It ensures unlimited data availability
• C. It reduces network latency
• D. It validates user identity

Answer: (A)

Encryption protects the secrecy of information by turning readable data into ciphertext so that only someone with the correct decryption key can read it. This directly supports confidentiality, ensuring data remains unreadable to unauthorized parties whether it’s in transit or at rest. The other options describe different security goals: unlimited data availability isn’t about keeping data secret, encryption can add overhead and affect availability if keys are lost, reducing network latency isn’t a goal of encryption, and validating user identity is about authentication rather than keeping data confidential.

Encryption protects the secrecy of information by turning readable data into ciphertext so that only someone with the correct decryption key can read it. This directly supports confidentiality, ensuring data remains unreadable to unauthorized parties whether it’s in transit or at rest. The other options describe different security goals: unlimited data availability isn’t about keeping data secret, encryption can add overhead and affect availability if keys are lost, reducing network latency isn’t a goal of encryption, and validating user identity is about authentication rather than keeping data confidential.