在信用卡支付方式中，（ ）使用双重签名和认证技术。
- A.SET方式
- B.专用协议方式
- C.专用账号方式
- D.账号直接输入方式
正确答案及解析
正确答案
解析
本题考查电子支付的几种方式。
信用卡电子支付方式：
（1）账号直接传输方式：就是直接将信用卡的号码信息加密后直接传输给商家。
（2）专业账号方式：即通过第三方代理人支付，客户在线或离线在第三方代理人处持有账号。
（3）专用协议方式：即简单信用卡加密，在客户、商家和银行卡机构之间采用专用的加密协议（如：SHTTP、SSL等）。
（4）SET协议：用于银行卡网上支付的协议。安全措施包括对称密钥相同、公钥相同、消息摘要、数字签名、数字信封、双重签名和认证等技术。
综合分析，本题选A。
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