A privacy preserving source verifiable encryption scheme

Authors

Zhongyuan Yao, University of WollongongFollow
Yi Mu, University of WollongongFollow
Guomin Yang, University of WollongongFollow

RIS ID

110224

Publication Details

Yao, Z., Mu, Y. & Yang, G. (2016). A privacy preserving source verifiable encryption scheme. Lecture Notes in Computer Science, 10060 182-193. Zhangjiajie, China Information Security Practice and Experience: 12th International Conference, ISPEC 2016, Zhangjiajie, China, November 16-18, 2016, Proceedings

Abstract

It is critical to guarantee message confidentiality and user privacy in communication networks, especially for group communications. We find previous works seldom consider these aspects at the same time and some trivial solutions cannot remain secure under strong security models. In order to address the aforementioned problem properly, we propose a privacy-preserving source-verifiable encryption scheme. With our scheme, the sender can prove his legitimation to anyone in a set of users chosen by himself without leaking his identity, and only the intended receiver can retrieve the original message and the identity of the sender from a given ciphertext. Considering the security of our scheme, we define three security models which capture the message confidentiality, the user privacy and the user impersonation resistance respectively. We prove that our scheme maintains all the three aforementioned properties under the random oracle model.