With the rise of cloud computing, multi-user scenarios have become a common setting for data sharing nowadays. The conservative security notion might not be sufficient for such a data sharing model. As a response to this challenge, there has been significant research targeting security against receiver selective-opening (RSO) attacks. However, we found that none of these studies discuss RSO security specifically for predicate encryption (PE)—an encryption mechanism naturally designed for multi-user data sharing. This manuscript first formalizes the RSO security for PE. We then present a generic PE construction that achieves RSO security based on the simulation-based definition. Our work also features several instantiations for various predicate families, including attribute-based encryption for the monotone span program, which is known as one of the most expressive PE.

随着云计算的兴起，多用户场景已成为当今数据共享的常见设置。保守的安全概念可能不足以满足这样的数据共享模型。为了应对这一挑战，针对接收器选择性开放 (RSO) 攻击的安全性开展了大量研究。然而，我们发现这些研究都没有专门讨论谓词加密 (PE) 的 RSO 安全性——一种自然设计用于多用户数据共享的加密机制。本手稿首先正式确定了 PE 的 RSO 安全性。然后，我们提出了一种通用 PE 结构，可基于基于模拟的定义实现 RSO 安全性。我们的工作还包括各种谓词族的几个实例化，包括单调跨度程序的基于属性的加密，它被称为最具表现力的 PE 之一。