Key-Aggregate Cryptosystem for Scalable Data Sharing in Cloud Storage

By Cheng-Kang Chu, Sherman S. M. Chow, Wen-Guey Tzeng, Jianying Zhou, Robert Huijie Deng. IEEE Transactions on Parallel and Distributed Systems, 2014

433 citations recorded by the source corpus.

Data sharing is an important functionality in cloud storage. In this paper, we show how to securely, efficiently, and flexibly share data with others in cloud storage. We describe new public-key cryptosystems that produce constant-size ciphertexts such that efficient delegation of decryption rights for any set of ciphertexts are possible. The novelty is that one can aggregate any set of secret keys and make them as compact as a single key, but encompassing the power of all the keys being aggregated. In other words, the secret key holder can release a constant-size aggregate key for flexible choices of ciphertext set in cloud storage, but the other encrypted files outside the set remain confidential. This compact aggregate key can be conveniently sent to others or be stored in a smart card with very limited secure storage. We provide formal security analysis of our schemes in the standard model. We also describe other application of our schemes. In particular, our schemes give the first public-key patient-controlled encryption for flexible hierarchy, which was yet to be known.

Subfields: Artificial Intelligence, Information Systems

View Paper: https://www.semanticscholar.org/paper/5c461fc721c028e976fa9b275fc411c4a2aac761

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Artificial Intelligence

1. Xiaodong Lin
2. Xuemin Shen
3. Divyansh Jain
4. Pranav Goyal
5. Vikas Hassija
6. Liehuang Zhu
7. Robert Huijie Deng
8. Yan Zhang

In Information Systems

1. Liehuang Zhu
2. Keke Gai
3. Yulu Wu
4. Lei Xu
5. Xuemin Shen
6. Divyansh Jain
7. Pranav Goyal
8. Vikas Hassija

Citations in the corpus

• Securing Fog Computing for Internet of Things Applications: Challenges and Solutions (2018, methodology): “Currently, several cryptographic techniques [129], [133], [142] have been widely used to achieve fine-grained data sharing in cloud storage, e.”
• Permissioned Blockchain and Edge Computing Empowered Privacy-Preserving Smart Grid Networks (2019, methodology): “Meanwhile, cryptographic techniques were also explored by the prior researches, such as bilinear pairing [48] and identitybased aggregate signature [49].”
• Security and Privacy in Smart Health: Efficient Policy-Hiding Attribute-Based Access Control (2018, background): “Besides, substantial research has been done on IoT architectures [23], [24], applications of cloud computing [5], [6], [7] and cloud security [25], [26], [27].”
• A Survey on IoT Security: Application Areas, Security Threats, and Solution Architectures (2019, methodology): “To overcome this challenge, some cryptographic techniques such as key-aggregate encryption, proxy re-encryption, and attribute-sharing, have been proposed in [166].”