【EMV L2】GPO响应以及AIP、AFL

 【GPO响应】

GPO的响应主要是为了取得AIP和AFL;AIP指示卡片对借贷记功能的支持能力;AFL包含终端将要读取用来交易处理的卡片数据文件的SFI和记录范围;

GPO的响应有两种格式:

Format1:

The data object returned in the response message is a primitive data object with tag equal to '80'.The value field consists of the concatenation without delimiters (tag and length) of the value fields of the AIP and the AFL.

Format1的响应为Tag80数据,必须包含AIP和AFL,AIP长度固定为2字节,AFL长度应该为4的倍数;

Format2:

The data object returned in the response message is a constructed data object with tag equal to '77'.The value field may contain several BER-TLV coded objects, but shall always include the AIP and the AFL.

Format2的响应为Tag77数据,必须包含AIP和AFL;

【AIP & AFL】

AIP:Application Interchange Profile,2字节;

AIP指示卡片对借贷记功能的支持能力,包括静态数据认证(SDA)、动态数据认证(DDA)、复合数据认证(CDA)、持卡人验证、终端风险管理和发卡行认证等;

AFL:Application File Locator,4字节的整数倍;

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转载自www.cnblogs.com/utank/p/10063192.html
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