Data Access Control Based on CP-ABE of Cloud for Internet of Vehicle
Pang Lijuna · Video Engineering · 2015
Due to the untrustworthy of the IOV cloud,complex type of data and data users,diversification of access content and multi-user multi-owner environment,CP-ABE security algorithm is improved and a safety access control scheme DAC-VCS for data in the cloud server of IOV is proposed. Setting property management agency,it will first give legal data user a set of attributes based on the user's role and status,then use the attribute set to generate user's private access key. Data owners firstly encrypts the data using the attributes of the user that can get access to the data and generates a list of users that can get the data uploaded and then send the user list and encrypted data to the cloud. When a user wants to access data in the cloud,cloud can check whether the user is in the user list or not. If the user is in the user list and its attributes satisfy the encryption content used in the ciphertext,the cloud would generate decryption takes and send it to the user together with the ciphertext. Then users can use the decryption token to decrypt the ciphertext to obtain the desired data content. With this double-protection,data access security can be guaranteed. What's more,the storage overhead used has been deeply reduced with encryption and decryption efficiency is greatly improved.