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Symmetry
Volume 17
Issue 7
10.3390/sym17071133
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Article

Efficient Outsourced Decryption System with Attribute-Based Encryption for Blockchain-Based Digital Asset Transactions

by
Rui Jin
1,
Yuxuan Pan
1,
Junjie Li
1,
Yu Liu
1,*,
Daquan Yang
2,3,
Mengmeng Zhou
1,4 and
Konglin Zhu
1,*
1
School of Artificial Intelligence, Beijing University of Posts and Telecommunications, No. 10 Xitucheng Road, Haidian District, Beijing 100876, China
2
School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
3
College of Information Science and Technology, Xizang University, Lhasa 850000, China
4
Beijing Academy of Blockchain and Edge Computing, Beijing 100093, China
*
Authors to whom correspondence should be addressed.
Symmetry 2025, 17(7), 1133; https://doi.org/10.3390/sym17071133
Submission received: 11 June 2025 / Revised: 1 July 2025 / Accepted: 9 July 2025 / Published: 15 July 2025
(This article belongs to the Special Issue Advanced Studies of Symmetry/Asymmetry in Cybersecurity)
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Abstract

The rapid expansion of blockchain-based digital asset trading raises new challenges in security, privacy, and efficiency. Although traditional attribute-based encryption (ABE) provides fine-grained access control, it imposes considerable computational overhead and introduces additional vulnerabilities when decryption is outsourced. To address these limitations, we present EBODS, an efficient outsourced decryption framework that combines an optimized ABE scheme with a decentralized blockchain layer. By applying policy matrix optimization and leveraging edge decryption servers, EBODS reduces the public key size by 8% and markedly accelerates computation. Security analysis confirms the strong resistance of EBODS to collusion attacks, making it suitable for resource-constrained digital asset platforms.
Keywords: attribute-based encryption; outsourced decryption; lattice; blockchain attribute-based encryption; outsourced decryption; lattice; blockchain

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MDPI and ACS Style

Jin, R.; Pan, Y.; Li, J.; Liu, Y.; Yang, D.; Zhou, M.; Zhu, K. Efficient Outsourced Decryption System with Attribute-Based Encryption for Blockchain-Based Digital Asset Transactions. Symmetry 2025, 17, 1133. https://doi.org/10.3390/sym17071133

AMA Style

Jin R, Pan Y, Li J, Liu Y, Yang D, Zhou M, Zhu K. Efficient Outsourced Decryption System with Attribute-Based Encryption for Blockchain-Based Digital Asset Transactions. Symmetry. 2025; 17(7):1133. https://doi.org/10.3390/sym17071133

Chicago/Turabian Style

Jin, Rui, Yuxuan Pan, Junjie Li, Yu Liu, Daquan Yang, Mengmeng Zhou, and Konglin Zhu. 2025. "Efficient Outsourced Decryption System with Attribute-Based Encryption for Blockchain-Based Digital Asset Transactions" Symmetry 17, no. 7: 1133. https://doi.org/10.3390/sym17071133

APA Style

Jin, R., Pan, Y., Li, J., Liu, Y., Yang, D., Zhou, M., & Zhu, K. (2025). Efficient Outsourced Decryption System with Attribute-Based Encryption for Blockchain-Based Digital Asset Transactions. Symmetry, 17(7), 1133. https://doi.org/10.3390/sym17071133

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