Faculty Publications

Now showing 1 - 4 of 4

Three-layer security for password protection using rdh, aes and ecc
(Springer, 2021) Kumar, N.; Ghuge, S.; Jaidhar, C.D.
In this work a three-layer password protection approach is proposed by utilizing Advanced Encryption Standard (AES), Elliptic Curve Cryptography (ECC) and Reversible Data Hiding (RDH). RDH is a sort of data concealing approach whereby the host image can be recuperated precisely. The proposed approach was implemented and evaluated by considering various images. Results have been presented by calculating Peak Signal to Noise Ratio (PSNR) and Rate. Obtained experimental results demonstrate the effectiveness of the proposed approach. Â© The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerland AG 2021.
A secure and enhanced elliptic curve cryptography-based dynamic authentication scheme using smart card
(John Wiley and Sons Ltd vgorayska@wiley.com Southern Gate Chichester, West Sussex PO19 8SQ, 2018) Madhusudhan, R.; Hegde, M.; Memon, I.
In remote system security, 2-factor authentication is one of the security approaches and provides fundamental protection to the system. Recently, numerous 2-factor authentication schemes are proposed. In 2014, Troung et al proposed an enhanced dynamic authentication scheme using smart card mainly to provide anonymity, secure mutual authentication, and session key security. By the analysis of Troung et al's scheme, we observed that Troung et al' s scheme does not provide user anonymity, perfect forward secrecy, server's secret key security and does not allow the user to choose his/her password. We also identified that Troung et al's scheme is vulnerable to replay attack. To fix these security weaknesses, a robust authentication scheme is proposed and analyzed using the formal verification tool for measuring the robustness. From the observation of computational efficiency of the proposed scheme, we conclude that the scheme is more secure and easy to implement practically. © © 2018 John Wiley & Sons, Ltd.
An improved user authentication scheme for electronic medical record systems
(Springer, 2020) Madhusudhan, R.; Nayak, C.S.
Electronic Medical Record (EMR) systems is a part of e-healthcare system, which is developing rapidly. In this, it is possible to deliver medical services among multiple participants over a network without physical presence. Since sensitive data is transmitted over public channels, it is very much required to maintain the secrecy of that data. This is achieved by mutual authentication between the participants. For this, various schemes for authentication with smart cards have been proposed. Han et al. proposed one such biometrics-based scheme for the same purpose using hash functions along with symmetric key encryption and elliptic curve cryptography. From cryptanalysis of their scheme, we have pointed out weaknesses viz. no user anonymity, user and server impersonation, man-in-the-middle attack. These security issues have been presented in this article. To overcome these attacks, a scheme has been proposed in this article. Since it does not use symmetric key encryption, the proposed scheme reduces the computational complexity as can be seen in the comparison provided. The security analysis of the proposed scheme, along with BAN (Burrows-Abadi-Needham) logic has been explained in detail. Comparison of the proposed scheme with related schemes with respect to computation cost, execution time and performance is demonstrated. This proves that the proposed scheme performs well in terms of security as well as computational efficiency. © 2020, Springer Science+Business Media, LLC, part of Springer Nature.
ES-HAS: ECC-based secure handover authentication scheme for roaming mobile user in global mobility networks
(MDPI, 2021) Suvidha, K.S.; Ramalingam, J.; Kamath, S.S.; Lee, C.-C.
The design and implementation of two-factor schemes designed for roaming mobile users for global mobility networks in smart cities requires attention to protect the scheme from various security attacks, such as the replay attack, impersonation attack, man-in-the-middle attack, password-guessing attack and stolen-smart-card attack. In addition to these attacks, the scheme should achieve user anonymity, unlinkability and perfect forward secrecy. In the roaming scenario, as mobile users are connected to the foreign network, mobile users must provide authentication details to the foreign network to which they are connected. The foreign network forwards the authentication messages received from the mobile users to their home network. The home network validates the authenticity of the mobile user. In the roaming scenario, all communication between the three entities is carried over an insecure channel. It is assumed that the adversary has the capabilities to intercept the messages transmitted over an insecure channel. Hence, the authentication scheme designed must be able to resist the above-mentioned security attacks and achieve the security goals. Our proposed scheme ES-HAS (elliptic curve-based secure handover authentication scheme) is a two-factor authentication scheme in which the mobile user possesses the password, and the smart card resists the above-mentioned security attacks. It also achieves the above-mentioned security goals. We also extended our two-factor authentication to a multi-factor authentication scheme using the fingerprint biometric technique. The formal security analysis using BAN logic and the formal security verification of the proposed scheme using the widely accepted AVISPA (automated validation of internet security protocols and applications) tool is presented in this article. In comparison with the related schemes, the proposed scheme is more efficient and robust. This makes the proposed scheme suitable for practical implementation. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

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