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CAS-005 · Question #412

Which of the following most likely explains the reason a security engineer replaced ECC with a lattice-based cryptographic technique?

The correct answer is D. It is currently considered a robust PQC technique. Lattice-based schemes, such as Learning With Errors (LWE) or Ring-LWE, are among the leading candidates in NIST’s post-quantum cryptography standardization process because their underlying hard problems resist known quantum-algorithm speedups. Replacing ECC with a lattice-based…

Submitted by mike_84· Mar 6, 2026Security Engineering

Question

Which of the following most likely explains the reason a security engineer replaced ECC with a lattice-based cryptographic technique?

Options

  • AIt is computationally efficient and provides perfect forward secrecy.
  • BIt is more resilient to brute-force attacks than ECC.
  • CIt supports ephemeral key exchange and digital signatures.
  • DIt is currently considered a robust PQC technique.
  • EIt enables processing on data while remaining in an encrypted state.

How the community answered

(26 responses)
  • C
    4% (1)
  • D
    96% (25)

Explanation

Lattice-based schemes, such as Learning With Errors (LWE) or Ring-LWE, are among the leading candidates in NIST’s post-quantum cryptography standardization process because their underlying hard problems resist known quantum-algorithm speedups. Replacing ECC with a lattice-based algorithm directly addresses the threat posed by future quantum computers, making it the preferred choice for long-term cryptographic agility.

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