Dynamic ID-based remote user authentication scheme using ElGamal encryption system

We propose a new dynamic ID-based remote user authentication scheme using smart cards, which it is based on one-way hash function, ElGamal’s public key cryptosystem and nonce. The scheme achieves the following security requirements: 1) users can choose and change their password freely, 2) mutual authentication between the user and the server, 3) the user and the server establish a session key after successful authentication process, 4) the server does not maintain a verification table, 5) the login request message does not contain the user’s identity, and 6) the authentication phase does not require time-synchronization, making it more secure than previous schemes. In order to verify the security characteristics of our protocol, we have modelled and analysed the proposal using High-level Protocol Specification Language (HLPSL) and Automated Validation of Internet Security Protocols and Applications (AVISPA) tool. The results demonstrate that our protocol achieves more security requirements than previous works.

Abstract licence: CC BY

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