| Communications are essential in our daily lives. Companies rely on computer networks to exchange information, that is stored in large databases, with their customers. Nonetheless, it is not guaranteed that all networks are reliable; therefore, database content should be protected . One of the most powerful strategies that is used in existing database security systems to protect databases is database encryption. Few of these systems are practical to be used with large databases since one important issue is not satisfactorily addressed which is concerning key management. It may take days to encrypt the huge databases. Imagine how the situation will be when a key is compromised! Straightforward solutions to address this problem demand that the keys used in database encryption to be replaced with new keys. Consequently, a re-encryption process has to be executed. In this thesis, I propose a novel key management system to effectively address this problem. |
