A developer is implementing a voting system on a blockchain. Each voter must cast a vote that is confidential, but the system must allow anyone to verify that the vote was counted correctly without revealing the voter's choice. Which cryptographic approach should be used?

Digital signatures on the plaintext vote

Hash of the vote stored on-chain

Symmetric encryption with a shared voting key

EC-CouncilBlockchain Developer Certification

Domain 2Objective 5

Advanced Cryptographic Mechanisms BDC Practice Questions (Page 7)

Part of the Cryptography and Security Foundations domain, which makes up ~10% of our current practice bank.

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Questions 31–31

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A developer is implementing a voting system on a blockchain. Each voter must cast a vote that is confidential, but the system must allow anyone to verify that the vote was counted correctly without revealing the voter's choice. Which cryptographic approach should be used?
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Advanced Cryptographic Mechanisms BDC Practice Questions (Page 7)

Questions 31–31

A developer is implementing a voting system on a blockchain. Each voter must cast a vote that is confidential, but the system must allow anyone to verify that the vote was counted correctly without revealing the voter's choice. Which cryptographic approach should be used?

Keep studying — Cryptography and Security Foundations