earticle

영어

In this paper, adapting a novel dual authentication method based on smart cards in public networks is proposed. This method uses the ElGamal public key cryptosystem and extend Chaum–van Antwerpen’s scheme to authenticate a signature between the signer and verifier using a dual protocol with a smart card that has tamper- resistant features. We propose the method to change the verification and disavowal protocol in Chaum–van Antwerpen’s scheme to authenticate both the signer and verifier. With these modifications, attempts to reject or deny a valid signature between the signer and verifier can be prevented or detected with high efficiency