Custom Based Protocol for Information Retrieval in Cloud Computing

Prominent issue in cloud computing is security in which storing and retrieving the data in a third party’s cloud system and public auditing scheme which causes serious problems and conflict over data confidentiality during the transaction of data. Though there are number of methods are available to overcome this problem like cryptography, key encryption etc. The general encryption schemes protect data confidentiality during the transaction; along with this process but the main drawback is its limits the functionality of the storage system because of only few operations are supported over encrypted data. This project proposes a secured threshold proxy re-encryption server and integrates it along with a decentralized erasure code which provides a secure distributed storage system for processing big data in which multiple users can interact with the storage system. In this environment users can upload their data in to the distributed storage system which will be stored in database in the encrypted format. User in the cloud will authorize the sender request to generate the key with the authorized one time key sender can access the encrypted file in decrypted format at once. The key becomes invalid after one use. The proxy server provides security for big data in cloud with proxy re encryption method which process effective way.