The i KP is a secure credit card based payment protocols which is designed and opened by IBM. A set of fair electronic commerce protocols based on i KP is given in the paper.

• i KP协议是 IBM公司提出的一组公开的基于信用卡的安全电子支付协议 ；该文则在 i KP协议基础上提出了一组有效的公平电子商务协议 .