一种改进的基于账户的安全电子支付协议

分析了iKP协议，并指出了其中的不足，提出了一种改进的安全电子支付协议. 改进的协议在保持了iKP协议原有安全特性的同时，还具有以下优点：降低了交易过程中的通信开销；避免了冗余的签名验证过程；实现了商品交付阶段的身份认证及证据保留；提供了完善的消费者购物隐私保护机制；确保了支付结算时消费者已获得商品.

An Improved Secure Electronic Payment Protocol Based on Account

By analyzing the iKP protocol and pointing out its drawbacks, an improved secure electronic payment protocol was presented, which preserved the security properties of the iKP protocol. The new protocol had the following benefits: cutting down the communication payload in the transaction, avoiding the redundant verification of signatures, supporting identification and evidence collection during delivery phase of the goods，providing the perfect protection of the purchase privacy, and guaranteeing that the consumers have had the possession of the goods before bank clearing starts.