Description

Abstract

CDAMA to realize aggregation query in Database-As-a-Service (DAS) model. New concealed

dataaggregation scheme extended from symmetric encryption. First we set the multiple

applicationsEnvironment. Extract the data in base station from aggregate cipher text. In DAS

model, a client stores her database on an untrusted service provider. Therefore, the client has to

secure their database through symmetric schemes because symmetric schemes keep utilizable

properties than standard ciphers. Based on symmetric schemes, the provider can conduct

aggregation queries without decryption. The most important of all is that we do not have to

consider the computation cost and the impact of compromising secret keys (i.e., compromising a

client in DAS model is harder than compromising a sensor).