Improved Fully Adaptive Decentralized MA-ABE for NC1 from MDDH
发布时间：2025-03-31
点击次数：
- DOI码：
- 10.1007/978-981-99-8733-7
- 发表刊物：
- Advances in Cryptology - ASIACRYPT 2023 - 29th International Conference on the Theory and Application of Cryptology and Information Security, Guangzhou, China, December 4-8, 2023, Proceedings, Part V
- 刊物所在地：
- Guangzhou, China
- 关键字：
- Attribute-Based Encryption, Decentralized, Fully Adaptive Security
- 摘要：
- 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.
- 合写作者：
- Qiaohan Chu, Ying Gao, Jianting Ning,Luping Wang
- 第一作者：
- Jie Chen
- 论文类型：
- 会议论文
- 通讯作者：
- Qiaohan Chu
- 页面范围：
- 3-32
- ISSN号：
- 978-981-99-8720-7
- 是否译文：
- 否
- 发表时间：
- 2023-12-18
