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With the great development of computer network and communication technology, smart cards have been used more and more popular. How to ensure its secure application and protect its sensitive information becomes the most important problem. Based on elliptic curve cryptosystem, we proposed a new authentication protocol that is built upon two channel model, where mobile telephone and authentication server...
With the development of computer and network technology, digital signature techniques are being expanded greatly, from single signature and single verification techniques to multisignature ones. This paper presents a new chain verification signature scheme, which does not grant verifier Pn to verify the validity of the signature until being authorized by members P1, P2,......,Pn-1 of the chain verification...
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