Cryptanalysis of a privacy-preserving and provable user authentication scheme for wireless sensor networks based on Internet of Things security

摘要: User authentication in wireless sensor networks is more complex than normal due to network characteristics such as unmanned operation, limited resources, and unreliable communication. For this reason, various protocols have been presented provide secure efficient In 2017, Wu et al. a provable privacy-preserving user protocol for networks. Unfortunately, we found that al.'s was still vulnerable against impersonation attack, had problem the password change phase. We show how an attacker can impersonate other why phase ineffective.