Redactable Blockchain Trust Scheme Based on Reputation Consensus for MEC

Area of Science:

• Computer Science
• Cryptography
• Distributed Systems

Background:

• Blockchain technology offers trust and efficiency in mobile edge computing (MEC) but faces challenges with immutable smart contracts containing errors.
• The inability to modify or delete erroneous data on the blockchain hinders practical applications in dynamic environments like MEC.

Purpose of the Study:

• To propose a novel redactable blockchain trust scheme for MEC systems.
• To address the immutability issue of blockchain data, allowing for the modification or deletion of erroneous or invalid entries.

Main Methods:

• Developed a scheme utilizing reputation consensus, factoring in user currency age and behavior.
• Implemented a one-way trapdoor function based on the SM2 asymmetric cryptography algorithm.
• Introduced a new Merkle tree structure to ensure the legitimacy of data modifications and deletions through verification and voting.

Main Results:

• The proposed scheme allows for modification or deletion without altering the existing blockchain structure or block linkages.
• Consensus verification successfully passed post-modification or deletion operations.
• Simulation experiments validated the feasibility and effectiveness of the redactable blockchain trust scheme.

Conclusions:

• The developed redactable blockchain trust scheme effectively resolves the immutability challenge in MEC.
• The scheme ensures data integrity and legitimacy while enabling necessary corrections through a consensus-driven process.
• This approach enhances the practicality and reliability of blockchain in mobile edge computing environments.