Generic Approach to Build Revocable Hierarchical Identity-Based Encryption

This article introduces a cloud service that allows businesses to upload, distribute, and keep documents. The operation of documents/files stored on a cloud server/database is made simpler for the employees by this application. This article will offer methods for document uploading and downloading, document storage on a server, viewing documents shared by other users, and viewing file metadata that are stored on the server. A document will automatically be encrypted with the hybrid method when the user submits it.In heirarchical identity-based encryption (HIBE) technique developing an online secure document storage system in which the documents will be encrypted using identity key and access permission will be maintained in meta data file of document.Hierarchical identity-based encryption (HIBE) technique will reduce execution time required to revoke or grant access permission in existing identity based encryption. Identity encryption technique is used to encrypt uploaded documents. Hierarchical identity-based encryption (HIBE) model will generate two distinct identity keys one is public identity key and other is private identity key. Public identity key will be sent to the user on his registered email id whereas private identity key will be used to encrypt document. The two identity key concept will improve security of the system and reduce key leakage possibility.