A Model For Secure Data Sharing Using Attribute Based Encryption

ABSTRACT The data security concerns and requirements are very essential for social networks or for cloud computing where individuals, organizations, and businesses may outsource their various types of data, including highly sensitive data into the cloud. Always people would like to make their sensitive or private data only accessible to authorized people having some access policies. So in order to share sensitive or private data securely attribute-based encryption technique is used. Attribute-based encryption provides a way of defining access policies based on different attributes of the requester, environment or the data object. In this approach we have proposed an attribute based encryption technique which is different from previously proposed encryption techniques. Many of the previously proposed encryption techniques which are used in data sharing scenario have some issues like varying size of ciphertext, user revocation which are resolved in this model. Also in this model for attribute based encryption we are applying an algorithm which enhances security. In this approach we focus on securely sharing of files using attribute based encryption technique.