Secure Multi-Party Computation: Privacy-Preserving Computation for Blockchain

Question 1

What are the critical challenges and promising research directions in secure multi-party computation on blockchain networks?

Accepted Answer

Addressing performance constraints and scalability issues

Accepted Answer

Creating more efficient and verifiable protocols

Accepted Answer

Establishing common frameworks for compatible SMPC

Answer

Designing user-friendly interfaces and tools for SMPC implementation

Question 2

How does Shamir's Secret Sharing enhance privacy and security in Secure Multi-Party Computation (SMPC)?

Accepted Answer

By allowing multiple parties to share secrets securely, protecting data privacy and security.

Answer

By eliminating the need for trusted third parties in SMPC, ensuring secure computation.

Answer

By providing complete cryptographic protection against unauthorized access and eavesdropping.

Question 3

In Secure Multi-Party Computation (SMPC), what is the main purpose of Shamir's Secret Sharing?

Accepted Answer

Securely distributing a secret among multiple parties

Answer

Combining the inputs of multiple parties securely

Answer

Detecting and preventing malicious behavior among participating parties

Question 4

Which of the following defines the core principle of Secure Multi-Party Computation (SMPC)?

Accepted Answer

Multiple parties compute a function on their inputs without revealing inputs to each other

Answer

Encryption of communication channels between parties

Answer

Anonymity for all participating entities

Question 5

Which algorithm is commonly employed in SMPC to facilitate addition operations?

Accepted Answer

Shamir's Secret Sharing

Answer

Digital Signature Algorithm (DSA)

Answer

ElGamal encryption

Answer

RSA encryption

Question 6

What is the primary advantage of leveraging SMPC in blockchain networks?

Accepted Answer

Preservation of privacy while enabling collaborative tasks

Answer

Reduction of storage space requirements

Answer

Enhancement of transaction speeds

Question 7

Which of the following showcases a practical application of SMPC in blockchain environments?

Accepted Answer

Confidential voting

Answer

Cloud storage

Answer

Email encryption

Answer

Social media

Question 8

What is the primary function of a trusted third party (TTP) in SMPC?

Accepted Answer

Coordination of communication and verification of results

Answer

Encryption and decryption of data

Answer

Monitoring the execution of computations

Answer

Generation and distribution of secret keys

Question 9

Which of the following accurately defines the fundamental principle of Secure Multi-Party Computation (SMPC)?

Accepted Answer

Hiding the individual inputs of participating parties while jointly computing a function

Answer

Encrypting network traffic to ensure secure communication

Answer

Creating tamper-proof digital signatures for data validation

Question 10

In the context of SMPC implementation, which algorithm is widely used in blockchain networks?

Accepted Answer

Shamir's Secret Sharing

Answer

RSA Encryption

Answer

AES Encryption

Answer

Elliptic Curve Cryptography

Question 11

Which of the following is a significant advantage of utilizing SMPC within blockchain systems?

Accepted Answer

Simultaneously enhancing data privacy and preserving the integrity of sensitive information

Answer

Increasing transaction throughput and scalability

Answer

Reducing computational costs and improving efficiency

Question 12

Which of the following statements is accurate regarding the nature of SMPC?

Accepted Answer

It does not require a trusted third party to facilitate the computation process.

Answer

It is exclusively designed for use in permissioned blockchain networks.

Answer

It is only suitable for scenarios where all parties fully trust each other.

Question 13

In blockchain environments, what is the primary security objective of SMPC?

Accepted Answer

Protecting data privacy by preventing unauthorized access to inputs and computation results

Answer

Ensuring data integrity by preventing tampering and modification

Answer

Enhancing network availability and preventing downtime

Question 14

For the successful implementation of SMPC in blockchain, which requirement is of critical importance?

Accepted Answer

Establishing a secure communication protocol for reliable information exchange among participating parties

Answer

Identifying a central authority to manage and oversee the computation process

Answer

Developing a custom blockchain platform specifically designed for SMPC

Question 15

Which of the following best describes a fundamental characteristic of Secure Multi-Party Computation (SMPC)?

Accepted Answer

Preserving privacy of individual inputs while jointly computing a function

Answer

Being exclusively applicable to blockchain environments

Answer

Requiring a trusted central authority to orchestrate the computation

Answer

Inherently incurring high computational costs

Question 16

What is the primary benefit of leveraging SMPC in blockchain networks?

Accepted Answer

Facilitating collaborative computations among parties while upholding their privacy

Answer

Enhancing transaction processing speed on the blockchain

Answer

Significantly reducing the size of blockchain data

Question 17

In the context of SMPC, what is the primary purpose of employing a secret sharing scheme?

Accepted Answer

To securely distribute a secret value among multiple parties, ensuring no single party has complete knowledge of the secret

Answer

To encrypt messages exchanged between parties during the computation

Answer

To generate random numbers that are used in the computation

Question 18

Which of the following is NOT a core principle of Secure Multi-Party Computation (SMPC)?

Accepted Answer

Data Aggregation

Answer

Privacy Preservation

Answer

Input Independence

Answer

Output Correctness

Question 19

Which of the following cryptographic techniques is commonly employed in SMPC protocols to ensure privacy?

Accepted Answer

Homomorphic Encryption

Answer

Digital Signatures

Answer

Hashing Algorithms

Answer

Symmetric-key Encryption

Question 20

What is the main advantage of using SMPC for secure voting on a blockchain network?

Accepted Answer

Preserves voter anonymity while ensuring the integrity of the election results.

Answer

Reduces the cost of conducting elections.

Answer

Eliminates the need for a centralized authority.

Question 21

In a blockchain-based supply chain management system, how can SMPC be used to verify the authenticity of products without disclosing confidential supplier information?

Accepted Answer

By using SMPC to compute a joint verification function on encrypted data about product origins.

Answer

By using public key cryptography to encrypt product information.

Answer

By using a centralized authority to verify the authenticity of products.

Question 22

Which of the following is NOT a potential application of SMPC in blockchain environments?

Accepted Answer

Efficiently managing cryptocurrency transactions.

Answer

Privately conducting financial audits.

Answer

Anonymously running prediction markets.

Answer

Securely sharing medical records among healthcare providers.

Question 23

In a blockchain-based decentralized finance (DeFi) protocol, how can SMPC be utilized to enable private and secure lending?

Accepted Answer

By enabling borrowers and lenders to negotiate loan terms without revealing their identities or financial details.

Answer

By providing a mechanism for anonymous lending and borrowing.

Question 24

What is the main difference between Secure Multi-Party Computation (SMPC) and Zero-Knowledge Proofs (ZKP)?

Accepted Answer

SMPC computes a function on inputs, while ZKP proves the knowledge of a secret without revealing it.

Answer

SMPC requires a trusted third party, while ZKP does not.

Answer

SMPC is more computationally efficient than ZKP.