Research on Parallel Encryption Technology in the Emergency Platform of High Speed Railway in China

Data security in cloud computing is a very challenging task, searchable encryption techniques are used to search on encrypted data without the need for decryption. It's the measure which can satisfy the demanding of security of railway data stored in the cloud. In this paper, the characteristics of high-speed railway data in the emergency platform is analyzed, so a data set of high speed railway emergency platform is built according to parts of scene of accident and classification method. Thus, by searching with parallel searchable encryption schemas, emergence plans for the accident characteristics can be retrieved, which can testify the algorithm's feasibility. CP-ABE is used to realize access control for search result in order to eliminate files without right of users. This method can guarantee security of railway data as well as raise the search efficiency, and it provides a new explication for dealing with high speed railway emergency information.