A Novel Protocol for Smart Card Using ECDLP

In this paper, we propose a novel protocol for smart card based on elliptic curve discrete logarithm problem (ECDLP). We believe that applications of smart card technology should be benefited more from advantages of public key cryptography, specifically, in initiation and maintenance of secure channel. This paper introduces a public key cryptographic protocol for secure entity authentication, data integrity and data confidentiality. The proposed secure channel protocol uses a combination of secure public key system, secret key and a use of public encryption system to achieve the desired goal. In this paper, signature authentication along with signature encryption for smart card based on digital signature authentication (DSA) using ECDLP has been proposed. Signature encryption is useful in protocols that guarantee the anonymity of the participants and its message. The proposed scheme can be easily extended to M-Commerce, Financial transactions and healthcare applications, where, the requester needs a signature on the message.