Research and development of secure authentication and key management for outsourced databases

1. Proposing an algorithm to reduce query time on encrypted outsourced database based on parallel processing. The proposed method will reduce the time in the processes of decrypting and calculating data, thereby reducing query execution time;
2. Proposing two batch verification algorithms based on two hard problems. The proposed algorithm helps to verify multiple signatures at the same time in a verification equation. Propose models and algorithms for data verification when querying on an encrypted outsourced database based on batch verification;
3. Proposing a KMT tree to manage the database's keys. Proposing a new architecture of encrypted file system (KVEFS), used to store and protect sensitive data. Proposing an access control model that helps data owners manage access rights of user when querying data. Proposing the key changed algorithm at the column level of the encrypted outsourced database based on MapReduce..