Fine Grained Security in Cloud with Cryptographic Access Control

In recent years cloud services has been increasingly on demand for IT consumers due to its need for less investment towards their infrastructure. Though the architecture of cloud is robust and flexible towards new data sets, but it lags in handling the issues related to security. Especially when applied in applications related to social networks, Financial transactions. The data storage in virtual machine may rise to problems such as authentication, collusion resilience and service hijacking in cloud environment. To overcome such issues, we tried to tailor the existing KP-ABE by introducing sessions and named it as KPAC to fulfill the requirement which can be adaptable to cloud environment with concerning to the needs of security. Further, we tried to prove our approach is resilient to the attacks mentioned.