Provably secure three-factor authentication and key agreement scheme for session initiation protocol. - Sravani Challa; Ashok Kumar Das; Saru Kumari; Vanga Odelu; Fan Wu 003; Xiong Li 002 (Secur. Commun. Networks, 2016)

Secure Signature-Based Authenticated Key Establishment Scheme for Future IoT Applications. - Sravani Challa; Mohammad Wazid; Ashok Kumar Das; Neeraj Kumar 001; Goutham Reddy Alavalapati; Eun-Jun Yoon; Kee-Young Yoo (IEEE Access, 2017)

An efficient ECC-based provably secure three-factor user authentication and key agreement protocol for wireless healthcare sensor networks. - Sravani Challa; Ashok Kumar Das; Vanga Odelu; Neeraj Kumar 001; Saru Kumari; Muhammad Khurram Khan; Athanasios V. Vasilakos (Comput. Electr. Eng., 2018)

Authentication Protocols for Implantable Medical Devices: Taxonomy, Analysis and Future Directions. - Sravani Challa; Mohammad Wazid; Ashok Kumar Das; Muhammad Khurram Khan (IEEE Consumer Electron. Mag., 2018)

Design and analysis of authenticated key agreement scheme in cloud-assisted cyber-physical systems. - Sravani Challa; Ashok Kumar Das; Prosanta Gope 001; Neeraj Kumar 001; Fan Wu 003; Athanasios V. Vasilakos (Future Gener. Comput. Syst., 2020)