EMV静态数据认证

EMV Static Data Authentication

EMV book v4.3 2 page 49 states

If all of the above steps were executed successfully, SDA was successful. The Data Authentication Code recovered in Table 7 shall be stored in tag '9F45'.

如何存储在标签 9F45 中恢复的数据验证码

到目前为止我还停留在这个阶段,我唯一想到的就是我必须发出 PUT DATA 命令 APDU。

任何帮助将不胜感激

If all of the above steps were executed successfully, SDA was successful. The Data Authentication Code recovered in Table 7 shall be stored in tag '9F45'.

这并不意味着您应该将恢复的数据验证码存储在卡上(因此不需要任何 APDU)。相反,这意味着您应该将 DAC 存储在 reader(POS 终端)上的数据元素 9F45 中以进行进一步处理(您最终必须将其发送给收单方以清算交易)。