WiMi Researches a Blockchain Privacy Protection System Based on Post-Quantum Threshold Algorithm

Core Viewpoint - WiMi Hologram Cloud Inc. is exploring a blockchain privacy protection system utilizing post-quantum threshold algorithms to create a secure and efficient blockchain ecosystem [1][11]. Blockchain Technology Overview - The fundamental structure of blockchain consists of transaction data, timestamps, and hashes of previous blocks, ensuring data integrity and immutability [2]. - Asymmetric encryption algorithms like RSA and ECC are commonly used for data encryption and digital signatures, but their security is threatened by advancements in quantum computing [2]. Post-Quantum Cryptography - Post-quantum cryptography aims to develop algorithms resilient to quantum attacks, utilizing new mathematical structures such as lattice-based systems and hash functions [3]. - These algorithms must meet blockchain requirements for efficiency, scalability, and decentralization while maintaining security [3]. Threshold Key Sharing Technology - This technology divides a private key into multiple parts distributed among participants, requiring cooperation to reconstruct the key, enhancing security and fault tolerance [4]. - Challenges include ensuring trust among nodes and maintaining system scalability [4]. WiMi's Blockchain Privacy Protection System - The system integrates post-quantum cryptography and threshold key sharing technology, providing a robust security solution for blockchain [5][11]. - It employs post-quantum encryption algorithms to protect data against quantum computing threats [5]. Distributed Key Management and Fault Tolerance - The system distributes private keys across multiple consensus nodes, ensuring that the compromise of a single node does not jeopardize overall security [6]. - This mechanism enhances fault tolerance, allowing the system to function normally even if some nodes are attacked or fail [6]. Flexible Data Authorization and Access Control - A threshold-based data authorization mechanism controls access to data, requiring a specific number of nodes to agree before granting permissions [7]. - The system allows for fine-grained access control policies tailored to user needs [7]. Efficiency and Scalability - The design optimizes consensus algorithms and data processing workflows to achieve efficient data processing and transaction confirmation [8]. - It supports dynamic scalability, enabling the addition of new consensus and data storage nodes as required [9]. Smart Contracts and Decentralized Applications - The system facilitates the deployment of smart contracts, allowing users to create custom logic and rules [10]. - This capability enhances the functionality of the system and promotes the development of decentralized applications [10]. Future Implications - WiMi's blockchain privacy protection system addresses security risks in the quantum era and enhances blockchain flexibility through various advanced features [11]. - As quantum computing and blockchain technology evolve, this system is expected to play a crucial role in user privacy protection and secure data sharing [11].