Comments on "A blockchain-based attribute-based signcryption scheme to secure data sharing in the

【Author】 Li, Xiaoyu; Ge, Lin; Chen, Jiahui; Peng, Zhiniang

【Source】JOURNAL OF SYSTEMS ARCHITECTURE

【影响因子】5.836

【Abstract】Secure data sharing deserves special attention in cloud computing since the operating environment is semi-trusted. Recently, Eltayieb et al. proposed a blockchain-based attribute-based signcryption scheme to secure data sharing in the cloud (Journal of Systems Architecture, doi: https://doi.org/10.1016/j.sysarc.2019. 101653). However, after carefully revisiting this scheme, we found out that Eltayieb et al.'s scheme is not secure against confidentiality attack. Thus, the data confidentiality of this scheme is broken, and any data user can have unauthorized access control on outsourced data.

【Keywords】Data sharing; Attribute-based signcryption; Confidentiality attack; Unauthorized access control

【发表时间】2022 OCT

【收录时间】2022-10-05

【文献类型】观点阐述

【主题类别】

区块链技术-核心技术-加密算法