A Practical and Efficient Bidirectional Access Control Scheme for Cloud-Edge Data Sharing

The cloud computing paradigm provides numerous tempting advantages, enabling users to store and share their data conveniently. However, are naturally resistant directly outsourcing the since often contain sensitive information. Although several fine-grained access control schemes for cloud-data sharing have been proposed, most of them focus on encrypted (e.g., restricting decryption capabilities receivers). Distinct from existing work, this article aims address challenging problem by developing a more practical bidirectional scheme that can restrict both senders receivers. To end, we systematically investigate sharing. Inspired encryption (ACE), propose novel framework combines side edge side. server is located in middle all communications, checking preventing illegal communications according predefined policy. Next, develop an efficient algorithm exploiting attribute-based proxy re-encryption proposed framework. experimental results show our exhibits superior performance compared prior work.