Secure Data Sharing in Cloud Computing Using Revocable Storage Identity Based Encryption in Java

Abstract:

Cloud computing is a paradigm that provides massive computation capacity and huge memory space at a low cost. It enables users to get intended services irrespective of time and location across multiple platforms (e.g., mobile devices, personal computers), and thus brings great convenience to cloud users. However, it also suffers from several security threats, which are the primary concerns of cloud users. Thus, in order to share the data secure cryptographically access control is necessary. Identity-based encryption is used to build data sharing system. In order, access control is not static. It means that when authorization of some users is expired, the system should remove his (or) him. By that the removed user cannot access both forward and backward data. For this we use a concept called revocable-storage identity-based encryption (RS-IBE), which
provide security of cipher text for forward/backward data by introducing the user revocation functionalities and simultaneous update of cipher text.