相关实验视频
Updated: Jul 4, 2025

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Characterization of Anisotropic Leaky Mode Modulators for Holovideo
Published on: March 19, 2016
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(内部产品) 功能加密与可更新的加密文本
Valerio Cini1, Sebastian Ramacher2, Daniel Slamanig3
1NTT Research, Sunnyvale, CA USA.
概括
我们推出了加密文本可更新的功能加密 (CUFE),使加密数据的动态访问控制成为可能. 这种新的方法允许使用特殊令牌安全更新加密文本,扩大功能加密功能.
科学领域:
- 密码学 密码学 密码学 密码学
- 计算机科学 计算机科学
- 信息安全 信息安全
背景情况:
- 功能加密 (FE) 为安全的数据处理提供了强大的工具.
- 现有的FE计划缺乏在加密文本生成后修改访问政策的能力.
- 精细的访问控制对于动态数据管理和安全至关重要.
研究的目的:
- 引入和定义加密文本可更新的功能加密 (CUFE).
- 为了实现对加密数据的动态细粒度访问控制.
- 扩大功能加密的实际应用.
主要方法:
- 定义了一个新的原始,CUFE,在不可区分的设置中有一个安全概念.
- 引入了功能解密密钥和密码文本的基于标签的匹配.
- 开发了用于控制密码文本标签切换的更新令牌.
- 提出了CUFE的通用构建,依赖于不可区分的模糊化 (iO).
- 为内部产品功能提供了一个实际的CUFE构建,该构建基于随机Oracle模型中的LWE假设.
主要成果:
- 成功定义和构建了CUFE,这是功能加密的一个新型变体.
- 展示了对任意功能和标签预言的通用构造.
- 实现了用于内部产品功能,加密文本可更新性的实用构建.
- 解决了安全挑战,特别是更新的挑战加密文本.
结论:
- 通过启用加密文本更新,CUFE显著增强了功能加密.
- 拟议的结构为加密数据的动态访问控制提供了实际解决方案.
- 这项工作使功能加密方案的景观充满了可更新功能.
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