Data Sharing in Cloud Computing Using (RS-IBE) Revocable Storage Identity-Based Encryption Method

computer science

NATIONAL CONFERENCE on VLSI, COMMUNICATION AND SIGNAL PROCESSING (NCVCS-2017)

Cloud computing provides a flexible and convenient way for data sharing, which brings various benefits for both the society and individuals. But there exists a natural resistance for users to directly outsource the shared data to the cloud server since the data often contain valuable information. Thus, it is necessary to place cryptographically enhanced access control on the shared data. Identity based encryption is a promising crypto graphical primitive to build a practical data sharing system. However, access control is not static. That is, when some user’s authorization is expired, there should be a mechanism that can remove him/her from the system. Consequently, The revoked user cannot access both the previously and subsequently shared data. A revocable storage identity based encryption (RS-IBE) is used which can provide the forward/backward security of cipher text by introducing the functionalities of user revocation and cipher text update simultaneously. Furthermore, A concrete construction of RS-IBE and prove its security in the defined security model. The performance comparisons indicate that the proposed RS-IBE scheme has advantages in terms of functionality and efficiency, and thus is feasible for a practical and cost-effective data-sharing system.

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.