Hierarchical ID-Based Cryptography
ASIACRYPT '02 Proceedings of the 8th International Conference on the Theory and Application of Cryptology and Information Security: Advances in Cryptology
Achieving secure, scalable, and fine-grained data access control in cloud computing
INFOCOM'10 Proceedings of the 29th conference on Information communications
ISPEC'11 Proceedings of the 7th international conference on Information security practice and experience
ESPAC: Enabling Security and Patient-centric Access Control for eHealth in cloud computing
International Journal of Security and Networks
Privacy Preserving Access Control with Authentication for Securing Data in Clouds
CCGRID '12 Proceedings of the 2012 12th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (ccgrid 2012)
How to use attribute-based encryption to implement role-based access control in the cloud
Proceedings of the 2013 international workshop on Security in cloud computing
PRAM: privacy preserving access management scheme in cloud services
Proceedings of the 2013 international workshop on Security in cloud computing
CRYPE: towards cryptographically enforced and privacy enhanced WBANs
Proceedings of the First International Conference on Security of Internet of Things
Proxy-invisible CCA-secure type-based proxy re-encryption without random oracles
Theoretical Computer Science
An efficient and secure approach for a cloud collaborative editing
Journal of Network and Computer Applications
Time-based proxy re-encryption scheme for secure data sharing in a cloud environment
Information Sciences: an International Journal
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Cloud computing, as an emerging computing paradigm, enables users to remotely store their data into a cloud so as to enjoy scalable services on-demand. Especially for small and medium-sized enterprises with limited budgets, they can achieve cost savings and productivity enhancements by using cloud-based services to manage projects, to make collaborations, and the like. However, allowing cloud service providers (CSPs), which are not in the same trusted domains as enterprise users, to take care of confidential data, may raise potential security and privacy issues. To keep the sensitive user data confidential against untrusted CSPs, a natural way is to apply cryptographic approaches, by disclosing decryption keys only to authorized users. However, when enterprise users outsource confidential data for sharing on cloud servers, the adopted encryption system should not only support fine-grained access control, but also provide high performance, full delegation, and scalability, so as to best serve the needs of accessing data anytime and anywhere, delegating within enterprises, and achieving a dynamic set of users. In this paper, we propose a scheme to help enterprises to efficiently share confidential data on cloud servers. We achieve this goal by first combining the hierarchical identity-based encryption (HIBE) system and the ciphertext-policy attribute-based encryption (CP-ABE) system, and then making a performance-expressivity tradeoff, finally applying proxy re-encryption and lazy re-encryption to our scheme.