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		Abstract
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In response to the data circulation requirements in the context of data elementization,
data security authorization becomes particularly important in distributed environments with multi-node participation.
This project proposes a distributed proxy re-encryption algorithm based on Chinese cryptographic standards.
The traditional single-proxy node in proxy re-encryption is split into multiple proxy nodes,
combining threshold proxy re-encryption and Chinese cryptographic algorithm characteristics to
ensure data integrity and privacy during data transmission and storage between clients and central servers,
central servers and different nodes,and clients and different nodes.

Compared with traditional access control and permission management methods,
the algorithm in this project has the following advantages:
High-strength encryption:
Uses threshold proxy re-encryption technology to provide high-strength encryption of data,
protecting data confidentiality and privacy.
Distributed architecture:
Implements access control and authorization management for distributed data through a distributed architecture,
solving the challenges faced by traditional methods in distributed scenarios.
Independent control:
Designed based on Chinese cryptographic algorithms,
ensuring data sovereignty and effectively preventing data leakage and information security risks.
High performance:
Simple algorithm implementation with low computational complexity,
enabling efficient data security sharing and authorization management with existing computational resources.

To verify the effectiveness and performance of the proposed system,
this project conducted a series of experimental tests.
The test results show that this proxy re-encryption system based on
Chinese cryptographic algorithms demonstrates superior encryption speed,
decryption efficiency, and scalability in distributed environments.

Therefore, this project provides an efficient and secure solution for distributed data transmission and storage,
bringing new research perspectives and practical experience to privacy computing in blockchain environments.

\textbf{Keywords:} Distributed Computing; Chinese Cryptographic Algorithm; Proxy Re-encryption; Data Sharing

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