Development of Cost-Effective Authentic and Anonymous Data Sharing system using Cryptographic Security Tools

Information Technology

Cloud computing moves the application software and databases to the centralized large data centers, where the management of the data and services may not be fully trustworthy. So there is a huge need to study the problem about data storage. Our proposed system is useful to reduce the computational cost at user side during the integrity verification of the data. Data sharing has never been easier with the advances of cloud computing. At the time of data sharing with a large number of participants must take into consideration several issues like efficiency, data integrity and privacy of data owner. For providing security to the system we proposed a scheme like Id-based Ring signature. It is a promising candidate to construct an anonymous and authentic data sharing system. It allows data owner to anonymously authenticate his data which can be put into the cloud for storage or analysis purpose. Identity-based (ID-based) ring signature eliminates the process of certificate verification. In the proposed system we will try to enhance the security of ID-based ring signature by providing forward security using cryptographic tools. If a secret key of any user has been compromised, all previous generated signatures including that user still remain valid. And this is especially useful to any large scaled at a sharing system. But one issue is still exists that, it is impossible to ask all data owners to re-authenticate their data even if a secret key of one single user has been compromised. Hence, we have proposed to provide a security and efficient instantiation. Also it helps to provide security from reset attacks launched by the cloud Storage server in the upload phase.

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