Wireless sensor networks (WSNs) are applicable in numerous fields ranging from very common to those demanding critical security concerns. It is recommended to provide external users a direct access to the data from sensors as per their need for real-time applications. To avoid unauthorized access, user authentication is essential for accessing the services between the nodes. Recently, Tai et al. designed an authentication scheme providing user anonymity, though it is found that Tai et al. are susceptible to attacks like offline password guessing, privileged insider, and known session-specific temporary information. Furthermore, it does not provide user anonymity and the secret key of gateway node is insecure. To address these security concerns, “Rabin cryptosystem”–based authentication scheme is proposed. It considers three factors for authentication, namely key generation, encryption, and decryption. During key generation, it takes two prime numbers as private and public key is computed as product of private keys. For encryption steps, only public key is used. The Blum-Blum-Shub pseudo-random bit generator algorithm and private key are used in the decryption process. The proposed scheme provides better security features because of its strong integer factorization which also increases the efficiency of the encryption and decryption process. It is apparent from security analysis of the RCBE-AS that it is free from attacks. This scheme is also simulated formally with AVISPA that shows that it is safe against cryptographic attacks. The proposed scheme also has less communication cost as compared to other related schemes. This scheme uses a random oracle model and automated tool, AVISPA, for formal security analysis to prove its efficacy. Furthermore, it provides mutual authentication using BAN logic.

无线传感器网络 (WSN) 适用于许多领域，从非常常见的领域到需要关键安全问题的领域。建议根据实时应用程序的需要，为外部用户提供对传感器数据的直接访问。为了避免未经授权的访问，用户身份验证对于访问节点之间的服务至关重要。最近，Tai 等人。设计了一个提供用户匿名的身份验证方案，尽管发现 Tai 等人。容易受到离线密码猜测、特权内部人员和已知会话特定临时信息等攻击。此外，它不提供用户匿名性，网关节点的密钥不安全。为了解决这些安全问题，提出了基于“Rabin 密码系统”的身份验证方案。它考虑了三个认证因素，即密钥生成、加密和解密。在密钥生成过程中，以两个素数作为私钥，公钥计算为私钥的乘积。对于加密步骤，仅使用公钥。解密过程使用 Blum-Blum-Shub 伪随机位生成算法和私钥。由于其强大的整数分解，所提出的方案提供了更好的安全特性，这也提高了加密和解密过程的效率。从 RCBE-AS 的安全分析可以看出，它没有受到攻击。该方案也用 AVISPA 进行了正式模拟，表明它可以安全地抵御密码攻击。与其他相关方案相比，所提出的方案还具有更少的通信成本。该方案使用随机预言机模型和自动化工具 AVISPA 进行正式的安全分析以证明其有效性。此外，它使用 BAN 逻辑提供相互身份验证。