Utilizing a Lightweight PKI Mechanism to Guarantee

Recently, cloud technology has become popular for smart societies. The Cloud technology 13 has made dynamical network changes by enabling the construction of a logical network without 14 building a physical network. Despite recent research on the cloud, it is necessary to study security 15 functions for the identification of fake VNFs and the encryption of communication between entities. 16 In this paper, we proposed an LW_PKI mechanism that detects a fake VNF and guarantees data 17 security through mutual authentication between VNFs. To evaluate the LW_PKI, we built a MANO 18 environment to test the performance of authentication and key generation for data security. In 19 addition, we applied the artificial intelligence algorithm to detect abnormal behavior by using real 20 attack data in the MANO environment. The LW_PKI guaranteed the reliability of a smart service by 21 enhancing the security of the cloud environment. 22