CDPSE Question #395: Real Exam Question with Answer & Explanation

The correct answer is C: Zero-knowledge proofs. Zero-knowledge proofs (ZKPs) allow a party to prove possession of a secret or attribute without revealing the secret itself, enabling privacy-preserving verification. Digital signatures (A) and PGP (B) still involve exposure of certain data elements/keys for validation; passwordl

Privacy Architecture

Question

Which of the following can be used to assist with identity verification without access to the actual data?

Options

ADigital signatures
BPretty Good Privacy (PGP)
CZero-knowledge proofs
DPasswordless authentication

Explanation

Zero-knowledge proofs (ZKPs) allow a party to prove possession of a secret or attribute without revealing the secret itself, enabling privacy-preserving verification. Digital signatures (A) and PGP (B) still involve exposure of certain data elements/keys for validation; passwordless methods (D) change authentication factors, not zero-knowledge verification. "Zero-knowledge proofs enable verification without disclosure of the underlying data."

Topics

#Zero-knowledge proofs#Identity verification#Privacy-enhancing technologies#Cryptography

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