Alipour, M., Bakhtiari Chehelcheshmeh, Sh., Heidarian, Sh.. Improve Identity-based Encryption Algorithm and Its Productivity in Providing Privacy of Cloud-Based Electronic Health Systems. Nashriyyah -i Muhandisi -i Barq va Muhandisi -i Kampyutar -i Iran. 2019;17(1):57-67. doi: