Secure cloud storage with attribute based encryption

Thesis Type: Postgraduate

Institution Of The Thesis: Middle East Technical University, Turkey

Approval Date: 2019

Student: Ceyda Tuğb Bağlaçer

Supervisor: MURAT CENK


As data storage needs increase, importance of and need for public cloud storage systems increase as well. However, given the amount, variety and importance of the data security can become a significant concern. Attribute based encryption schemes are important tools that can be used for access control in secure cloud storage systems. There are many attribute based encryption schemes proposed overs the years; key policy, ciphertext policy and multi-authority schemes. It is important to choose the most suitable attribute based encryption scheme to use in secure cloud storage systems. In this work, we investigate which Attribute Based Encryption Scheme would be suitable to use in a global scale secure cloud storage system. We analyze 5 different Attribute Based Encryption Schemes about; how they work, usage of pairings and suitability global scale secure cloud storage systems. After choosing the most suitable scheme we then discuss how we can improve performance of this scheme.