FREE Blockchain Cryptographic Principles Questions and Answers

Question 1

Which cryptographic primitive is primarily responsible for ensuring the integrity of data in a blockchain by detecting any unauthorized alteration?

Accepted Answer

Hash Function

Answer

Digital Signature

Answer

Public Key Cryptography

Answer

Symmetric Key Cryptography

Question 2

A user wants to prove ownership of funds in a cryptocurrency wallet without revealing their private key. Which cryptographic principle allows this proof of ownership to be established securely?

Accepted Answer

Zero-Knowledge Proofs

Answer

Collision Resistance

Answer

Non-repudiation

Answer

Key Derivation Functions

Question 3

Which of the following properties is essential for a cryptographic hash function used in blockchain technology to prevent an attacker from finding two different inputs that produce the same hash output?

Accepted Answer

Collision Resistance

Answer

Pre-image Resistance

Answer

Second Pre-image Resistance

Answer

One-way Property

Question 4

In the context of public-key cryptography used in blockchain, what is the primary purpose of the private key?

Accepted Answer

To sign transactions and prove ownership

Answer

To encrypt messages for anyone to read

Answer

To verify the authenticity of a message sender

Answer

To generate a new public key

Question 5

A blockchain network relies on cryptographic principles to maintain security and integrity. If a malicious actor attempts to alter a transaction after it has been included in a block, which cryptographic principle would immediately expose this tampering?

Accepted Answer

Hashing and Chaining

Answer

Confidentiality

Answer

Non-repudiation

Answer

Digital Signatures

Question 6

What role does Elliptic Curve Digital Signature Algorithm (ECDSA) play in blockchain technology?

Accepted Answer

It is used for creating digital signatures to authorize transactions.

Answer

It encrypts transaction data to ensure privacy.

Answer

It generates the fixed-size output for block hashes.

Answer

It establishes a secure communication channel between nodes.