Faculty of Computer & Software Engineering, Huaiyin Institute of Technology, Huai'an, China.
PLoS One. 2021 Jan 6;16(1):e0244978. doi: 10.1371/journal.pone.0244978. eCollection 2021.
The location-based services can provide users with the requested location information. But users also need to disclose their current location to the location-based service provider. Therefore, how to protect user's location privacy is a major concern. In this paper, we propose a heterogeneous deniable authenticated encryption scheme called HDAE for location-based services. The proposed scheme permits a sender in a public key infrastructure environment to transmit a message to a receiver in an identity-based environment. Our design utilizes a hybrid encryption method combing the tag-key encapsulation mechanism (tag-KEM) and the data encapsulation mechanism (DEM), which is well adopted for location-based services applications. We give how to design an HDAE scheme utilizing a heterogeneous deniable authenticated tag-KEM (HDATK) and a DEM. We also construct an HDATK scheme and provide security proof in the random oracle model. Comprehensive analysis shows that our scheme is efficient and secure. In addition, we give an application of the HDAE to a location-based services system.
基于位置的服务可以为用户提供所需的位置信息。但用户也需要向基于位置的服务提供商披露其当前位置。因此，如何保护用户的位置隐私是一个主要关注点。在本文中，我们提出了一种名为 HDAE 的异构可否认认证加密方案，用于基于位置的服务。所提出的方案允许公钥基础设施环境中的发送方将消息传输到基于标识的环境中的接收方。我们的设计利用了一种混合加密方法，结合了标签-密钥封装机制 (tag-KEM) 和数据封装机制 (DEM)，非常适用于基于位置的服务应用。我们给出了如何利用异构可否认认证标签-KEM (HDATK) 和 DEM 设计 HDAE 方案。我们还构建了一个 HDATK 方案，并在随机 oracle 模型中提供了安全性证明。综合分析表明，我们的方案是高效和安全的。此外，我们还将 HDAE 应用于基于位置的服务系统。
