What was a major challenge that led to SIKE being less favored in the NIST competition?

It required too much memory for practical use

Its performance was slower compared to other candidates

It was not based on a hard mathematical problem

It was broken by a classical attack

What is the primary security assumption underlying the Dilithium digital signature scheme?

The hardness of lattice problems such as Module-LWE and Module-SIS

The hardness of the discrete logarithm problem

The security of hash functions only

The difficulty of factoring large integers

In the Niederreiter cryptosystem, what is the public key derived from?

A set of multivariate polynomials

A scrambled parity-check matrix of an error-correcting code

In lattice-based signature schemes like Falcon, what is the typical structure of a signature?

A random nonce concatenated with the message

A large prime number generated from the message

A hash of the message encrypted with the private key

A vector that is close to a lattice point derived from the message

EC-CouncilCertified Encryption Specialist

Domain 6Objective 2

Lattice-Based and Post-Quantum Cryptography ECES Practice Questions (Page 1)

Part of the Quantum Computing and Cryptography domain, which makes up ~11% of our current practice bank. EC-Council does not publish an official question count, but from its 120-minute exam (~50–80 total, ~6–9 in this domain), expect 3–5 from this objective — we provide 45 practice questions to prepare you well beyond it. (estimate)

45questions here

9free pages

9concepts

Questions 1–5

1foundation · easy
What was a major challenge that led to SIKE being less favored in the NIST competition?
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2foundation · easy
What is the primary security assumption underlying the Dilithium digital signature scheme?
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3foundation · easy
In the Niederreiter cryptosystem, what is the public key derived from?
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4application · medium
A developer is implementing a post-quantum digital signature scheme for a high-volume transaction system. The system requires fast verification and relatively small signatures, but the developer is concerned about the complexity of implementing the scheme correctly. Which NIST-selected scheme offers a good balance of these properties?
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5foundation · easy
In lattice-based signature schemes like Falcon, what is the typical structure of a signature?
Select an answer first

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