期刊名称：International Journal of Advanced Research in Computer Engineering & Technology (IJARCET)
印刷版ISSN：2278-1323
出版年度：2013
卷号：2
期号：5
页码：1670-1673
出版社：Shri Pannalal Research Institute of Technolgy
摘要：Encryption of database is an important topic for research, as secure and efficient encryption algorithms are needed that provide the ability to query over encrypted database and allow optimized encryption and decryption of data. There is always a compromise between the degree of security provided by encryption algorith m and the efficient querying on the database, because the encryption and decryption on database greatly degrade query performance. For this, we prop ose a new encryption algorithm; Reverse Encryption Algorithm (REA). REA is simple and fast enough for most applications. REA provides maximum security and limits the added time cost for encryption and decryption to as to not degrade the performance of a database system. Privacy protection is one of the fundamental security requirements for database outsourcing. A major threat is information leakage from database access patterns generated by query executions. Recent works propose to protect access patterns by introducing a trusted component with constant storage size. The resulting privacy assurance is as strong as PIR, though with O(1) online computation cost, they still have O(n) amortized cost per query due to periodically full database shuffles. In this wok, we design a novel scheme in the same model with provable security, which only shuffles a portion of the database.
