Attribute-Based Data Access Policy & Key Escrowing Problem: A Review Paper
Mr. Sourabha Vijaykumar Pashte, Prof.Mr. Chetan J. Awati · International Journal of Advanced Engineering Research and Science · 2016
Cloud storage is the best & efficient way to handle our data remotely.However, since data owners and users are usually outside the trusted domain of cloud service providers the data security and access control is the important factor at the time of sensitive data stored in the cloud.Moreover, now days there are different mechanisms are available for data sharing & preserving privacy of data owner & user.Key Escrow is the one of the major issue now a day.We can't keep full trust over the key authority center because they may be misuse there privileges.This is unsuitable for information sharing situations.In this paper we studied the existing technique for sharing the data from data owner to data user. Keywords-Data Confidentiality, Key Authority, Attribute based schemes, Access Control policy, Data Sharing. I. INTRODUCTIONow a days there are lots of fast growing trends & cloud computing is one of them.Cloud provide easy ,efficient platform to store data, secure data, & access data at any location with the help of internet.Also it provides user flexible infrastructures, storage space and performance.Important factor in cloud storage are Data confidentiality & performance.To maintain data securely from unauthorized access lots of cryptographic algorithms are present.Trusted third parties are also playing main role in cloud computing which providing us secure channel for transferring the data from owner to other requested different users.Existing system uses the cipher text policies based encryption in which confidentiality of the data are made by using data, encryption algorithm & the size of key.Trusted third party like key authority, key generators & providers, digital certificate providers & verifiers etc used in this scenario.But we cannot keep fully trust over these service providers & trusted parties.Not all but some of them may be can try to steal our data & keys.Due to this key Escrow issue may be generated under this kind of system.Normally all the tasks are done over the cloud such as authentication, file encryption, file decryption, key management and so on.There are lots of users are active concurrently from different location & performing lots of different operations.So performance of the cloud system may be degrading in future.To deal with these major issues of existing system I propose this system.In which we make small change in the Attribute-based policies & remove the key escrow problem completely.Now we will go through some existing system related to data sharing & confidentiality over cloud in short & some of their disadvantages.