Multi-client framework for access control to datasets set away in an untrusted cloud condition. Appropriated storing like some other untrusted condition needs the capacity to check share data. Our framework gives a path of authority over the informational index away in the cloud without the supplier adventure. The fundamental instrument of access control structure is the figure content arrangement trademark based encryption plot with dynamic properties. Utilizing a blockchain based decentralized record, our framework gives the steady log of all vital security occasions, for example, key age, get the chance to strategy undertaking, change or refusal, get the chance to ask for. We propose a huge amount of cryptographic conventions guaranteeing the security of cryptographic endeavors requiring conundrum or private keys. Just ciphertexts of hash codes are exchanged through the blockchain record. The model of our structure is acknowledged utilizing sharp contracts and endeavored on square chain sort out. Here is proposed structure as a customer if they are going to enroll in that account director will give assorted keys to each customer it takes after a private key in the wake of selecting a customer they can log in and they can exchange all of the reports what they need while exchanging time the substance everything will be encoded and for that one open key will be produce these all will be secured in cloud database . As a customer they have an alternate privet key which was given by the manager so they can log in and they can get to that account if they have to exchange they can exchange else they have to get any record they can get that record by using of cloud they can see all the customer archives if they need any record they have to send sales to executive .if overseer to recognize that request they can get that interface if the customer need that record they have to click that record in case you clicked that archive, by then it will be asked first it will ask private key . obviously, it will ask with respect to whether two keys was composed then nobody however they can prepared to download else they can't prepared to down weight .