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Computer Science Hard NTS Uploaded: 07 Aug 2026

Which cryptographic technique uses two different keys for encryption and decryption?

  • A Symmetric encryption
  • B Checksum
  • C Asymmetric encryption
  • D Hashing
Correct Answer: Option C — Asymmetric encryption
Explanation:
Asymmetric encryption uses a pair of mathematically related keys, a public key for encryption and a private key for decryption. This differs from symmetric encryption, which uses a single shared key for both encrypting and decrypting data.
Submitted by: PaperMCQs
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