Efficient and Secure ECC-based Electronic Cash Payment Applications for Internet Consumers

摘要

Many smart card based electronic payment activities constructed for Internet consumers employed the certificate-based public key cryptosystems to solve related security issues. It, however, is based on the condition that the certification authority (CA) must be honest and needs to manage the key directory. Furthermore, it needs to spend extra time to verify the signature signed by CA in the digital certificate. For the considerations of efficiency, a secure electronic payment system proposed in this paper is developed by using elliptic curve cryptosystems (ECC) instead of modular exponentiation schemes, because ECC possess fewer bits achieving the same security level as other public key cryptosystems. Moreover, in this paper we have designed efficient session key exchange and blind signature schemes for the blinded e-cash based payment systems using the self-certified public key cryptosystems based on ECC. In summary, the proposed efficient self-certified public key cryptosystems make the on-line electronic cash payment system securely workable for Internet consumers.