CryptoDB
Improved Fully Adaptive Decentralized MA-ABE for NC1 from MDDH
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Presentation: | Slides |
Conference: | ASIACRYPT 2023 |
Abstract: | We improve the first and the only existing prime-order fully adaptively secure decentralized Multi-Authority Attribute-Based Encryption (MA-ABE) scheme for NC1 in Datta-Komargodski-Waters [Eurocrypt '23]. Compared with Datta-Komargodski-Waters, our decentralized MA-ABE scheme extra enjoys shorter parameters and meanwhile supports many-use of attribute. Shorter parameters is always the goal for Attribute-Based Encryption (ABE), and many-use of attribute is a native property of decentralized MA-ABE for NC1. Our scheme relies on the Matrix Decision Diffie-Hellman (MDDH) assumption and is in the random oracle model, as Datta-Komargodski-Waters. |
BibTeX
@inproceedings{asiacrypt-2023-33461, title={Improved Fully Adaptive Decentralized MA-ABE for NC1 from MDDH}, publisher={Springer-Verlag}, author={Jie Chen and Qiaohan Chu and Ying Gao and Jianting Ning and Luping Wang}, year=2023 }