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SET(安全电子交易协议)是为了在Internet上进行在线交易时,保证信用卡支付的安全而设计开发的一个开放的规范。介绍了基于SET协议的购物流程及其采用的密码技术。针对SET协议存在的不足,提出了基于椭圆曲线密码体制的SET协议。同其它非对称加密体制相比,椭圆曲线密码体制(ECC)除了安全性高外,还具有计算负载小,密钥尺寸短,占用带宽少等优点。对椭圆曲线密码体制在购买阶段中SET协议的双重数字签名和数字信封技术中的应用进行详细的分析。
SET (Secure Electronic Transaction Protocol) is an open specification designed and developed to ensure the security of credit card payments when making online transactions on the Internet. Introduced the shopping process based on the SET protocol and the password technology used. Aiming at the shortcomings of SET protocol, a SET protocol based on elliptic curve cryptography is proposed. Compared with other unsymmetrical cryptosystem, the elliptic curve cryptosystem (ECC) not only has high security, but also has the advantages of small computational load, short key size and less occupied bandwidth. This paper analyzes the double digital signature of SET protocol and the application of digital envelope technology in the purchase phase of elliptic curve cryptosystem.