In this section, you can access to the latest technical information related to the FUTURE project topic.

Obfuscating encrypted threshold signature algorithm and its applications in cloud computing

Abstract

Current cloud computing causes serious restrictions to safeguarding users? data privacy. Since users? sensitive data is submitted in unencrypted forms to remote machines possessed and operated by untrusted service providers, users? sensitive data may be leaked by service providers. Program obfuscation shows the unique advantages that it can provide for cloud computing. In this paper, we construct an encrypted threshold signature functionality, which can outsource the threshold signing rights of users to cloud server securely by applying obfuscation, while revealing no more sensitive information. The obfuscator is proven to satisfy the average case virtual black box property and existentially unforgeable under the decisional linear (DLIN) assumption and computational Diffie-Hellman (CDH) assumption in the standard model. Moreover, we implement our scheme using the Java pairing-based cryptography library on a laptop.

» Author: Yahong Li,  Jianzhou Wei,  Bin Wu,  Chunli Wang,  Caifen Wang,  Yulei Zhang,  Xiaodong Yang

» Reference: https://doi.org/10.1371/journal.pone.0250259

» Publication Date: 16/04/2021

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