Model Design on DAS and Research of XML Encrypted Data Querying

We have designed a DAS (data as a service) model of e-commerce by using the semi-structured XML data file system instead of traditional database--the general B / S model, which mainly includes the clients´ data encryption, key management on the server and XML encrypted data querying processing on the service provider. The searching method that we connected the XML index`s skill and Dewey encoding based on the level to achieve users´ order query processing of XML encrypted data. This project has greatly reduced the system´s maintenance costs and improved the system´s capability and operating efficiency. At the same time it can help the enterprise to promote their benefits under the premise of guaranteeing the system´s security and stability.