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Cryptology ePrint Archive

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新筑之法,以增效于二次一次性噪声多客户端函数加密方案
Jasmin Zalon · 2026-05-23 · via Cryptology ePrint Archive

论文 2026/1033

一种更高效的四元一次性噪声多客户端函数加密方案的新构造方法

琳达·舒-哈赫特尔,曼海姆大学

弗雷德里克·阿尔姆克内希特,曼海姆大学

摘要

吾等新创一法,用于构建一次性多客户端函数加密方案,此方案支持含噪二次函数,能抗篡改,且允标签。此等方案可用作多实用应用之基石,例如于任意分割之数据上施行隐私保护机器学习。较之旧式构建,吾等之法采用异构之设计,得以运用较简之基石,故而更效。吾等之构建全赖其基石之安全,无需额外之困难假设,故较相关之工作更为通用。具体而言,此构建本身不倚赖双线性群所给之结构。 吾等呈示一具体实现,名曰 QUILT,并经一系列实验证明,其远胜现有可比方案。例如,于私密逻辑回归训练之例,使用 QUILT 可提速四点八倍至六点八倍。 复次,较之此等方案,吾等之构建允用标签。此弱化了一次性之限制,盖若每密文皆系于异标签,则多重加密成为可能。

BibTeX

@misc{cryptoeprint:2026/1033,
      author = {Jasmin Zalonis and Linda Scheu-Hachtel and Frederik Armknecht},
      title = {A New Construction Method for More Efficient Quadratic One-Time Noisy Multi-Client Functional Encryption Schemes},
      howpublished = {Cryptology {ePrint} Archive, Paper 2026/1033},
      year = {2026},
      url = {https://eprint.iacr.org/2026/1033}
}