Redundant file finder, remover in mobile environment through SHA-3 algorithm

Mobile environment provides storage as a main service. Data storage is a desired property when users outsource their data to be stored in a place irrespective of the locations. File systems are designed to control how files are stored and retrieved. Without knowing the context and semantics of file contents, file systems often contain duplicate copies and result in redundant consumptions of storage space and network bandwidth. It has been a complex and challenging issue for enterprises to seek deduplication technologies to reduce cost and increase the storage efficiency. To solve such problem, Hash values for files has been computed. The hash function competition to design a new cryptographic hash standard `SHA-3´ is currently one of the well-known topics in cryptologic research, its outcome heavily depends on the public evaluation. Testing the finalists in the competition for a new SHA-3 standard shows generally fast, secure hashing algorithms with few collisions. Focus of computation is performed for duplicate knowledge removal. Hash computation is done by the method of comparing files initially and followed by SHA3 signature comparison. It helps to reclaim valuable disk space and improve data efficiency in mobile environment.