IMPLEMENTING SECURE DATA SHARING USING IBE USING CLOUD BASED REVOCABLE STORAGE SYSTEMS

IMPLEMENTING SECURE DATA SHARING USING IBE USING CLOUD BASED REVOCABLE STORAGE SYSTEMS

S. Sampoornamma 1 , O. Bhargavi 2 , P.Nikhila 3 , Harshitha 4 ,

1 Assistant Professor, Department of CSE , Narayana Engineering College, Gudur, A.P,India,

2 Student, Department of CSE , Narayana Engineering College, Gudur, India,

3 Student, Department of CSE , Narayana Engineering College, Gudur, India,

4 Student, Department of CSE , Narayana Engineering College, Gudur, India,

Abstract – Now days cloud computing provides a  more  and  more  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 cryptographical primitive   to   build   a   practical   data   sharing system. However, access control is not static. To this end, we propose a notion called revocable- storage identity-based encryption (RS-IBE), which  can  provide  the  forward/backward security of ciphertext by introducing the functionalities of user revocation and ciphertext update simultaneously. Furthermore, we present a concrete construction of RS-IBE, and prove its security in the defined security model.

Index Terms – Identity based Encryption, User Revocation, Access Control Policy, Cloud Computing.