Nandala Narayanamma, D Mohammed Rafi


Under the current plan, when the user exits the user group, the manager of the audience only cancels the group's secret key, which means that the private user key associated with the attribute remains valid. Our plan is suitable for devices with limited resources. If someone within the group intentionally discovers the public's confidential response to the revoked user, they can perform the understandings through their own key. To demonstrate this attack, a specific instance is presented. We have demonstrated our safety in our plan under the assumption of Daffier-Hellman (DCDH) for the divisible account. Unfortunately, the ABE plan requires high arithmetic expenses while performing encryption and understanding of files. This defect becomes more severe for lightweight devices due to restricted computing sources. Within this system, we focused on designing the Club-ping-ABE plan with efficient user revocation of the cloud storage system. The result of our experience shows that the cost of computing for local devices is relatively low and can be fixed. We tried to design the attack model for collusion by users who were removed and who were collaborating with existing users. In addition, we built the penguin-ABE Club plan to cancel the eligible user by increasing the current plan and proving that our plan is safe for cost-per-acquisition under the selective model.


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