Research on Secure Sharing of Cloud Storage Data Based on Attribute Re encryption Scheme
With the improvement of new technology and computing power,in order to ensure the secure sharing of medical data,a multi-institution authorized cloud storage medical data security sharing scheme is proposed based on ciphertext policy attribute base encryption and proxy re-encryption technology.The results show that when the number of policy attributes is 200,the rekey genera-tion time of the improved scheme is 11000ms.When the number of attributes is 300,the total time for users to calculate consumption is 19000ms.Improvement scenario:When the number of attributes is 300,the total length of user storage consumption is always con-stant constant.In terms of reencryption key generation,the improvement scheme has high running time,but it has better efficiency in the decryption phase.At the same time,in terms of the total cost of computing and storage,the improved solution has better perform-ance and effectively reduces the resource consumption of users in the cloud storage system.Therefore,the improvement scheme cloud storage medical data security sharing has practical application value.
attribute based encryptionproxy re encryptioncloud storagesecure sharingciphertext strategymultiple author-ized institutions
万方数据
维普
