2013/10/23 by Dheerendra Mishra, Mishra, Dheerendra
Computer Science · #Advanced Authentication Protocols Security #Cryptography and Data Security #Cryptography and Security (cs.CR) #FOS: Computer and information sciences #User Authentication and Security Systems #cs.CR
paper · pdf · doi:10.48550/arxiv.1310.6422
openalex publication_date 2013/10/23 · arxiv created 2014/04/13 · arxiv updated 2014/04/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Dynamic ID-based remote user authentication schemes ensure efficient and anonymous mutual authentication between entities. In 2013, Khan et al. proposed an improved dynamic ID-based authentication scheme to overcome the security flaws of Wang et al.'s authentication scheme. Recently, Sun and Cao showed that Khan et al. does not satisfies the claim of the user's privacy and proposed an efficient authentication scheme with user anonymity. The Sun and Cao's scheme achieve improvement over Khan et al.'s scheme in both privacy and performance point of view. Unfortunately, we identify that Sun and Cao's scheme does not resist password guessing attack. Additionally, Sun and Cao's scheme does not achieve forward secrecy.