smartcard - 如何解释 GET PROCESSING OPTIONS 的响应？

Question

我正在通过 ACR 读卡器与 Visa Electron 借记卡通信，我从 GET PROCESSING OPTIONS 命令得到以下响应:

80 0A 1C 00 08 01 03 00 10 01 01 00 90 00

当其中既没有 AFL(应用程序文件定位器)也没有任何 AIP(应用程序交换配置文件)时，我应该如何解释此响应？这是完整的通信日志:

SELECT PSEv2: 00 A4 04 00 0E 32 50 41 59 2E 53 59 53 2E 44 44 46 30 31 00
SELECT PSEv2 returned: 6A82 - Wrong parameter(s) P1 P2; file not found

SELECT PSEv1: 00 A4 04 00 0E 31 50 41 59 2E 53 59 53 2E 44 44 46 30 31 00
SELECT PSEv1 returned: 6A82 - Wrong parameter(s) P1 P2; file not found

SELECT ADF: 00 A4 04 00 07 A0 00 00 01 52 30 10 00
SELECT ADF returned: 6A82 - Wrong parameter(s) P1 P2; file not found

SELECT ADF: 00 A4 04 00 07 A0 00 00 00 03 10 10 00
SELECT ADF returned: 6A82 - Wrong parameter(s) P1 P2; file not found

SELECT ADF: 00 A4 04 00 07 A0 00 00 00 03 20 10 00
SELECT ADF returned: 6F 2C 84 07 A0 00 00 00 03 20 10 A5 21 50 0D 56 49 53 41 20 45 4C 45 43 54 52 4F 4E 87 01 01 5F 2D 04 62 67 65 6E BF 0C 05 9F 4D 02 0B 0A 90 00

SELECT ADF: 00 A4 04 00 05 A0 00 00 00 25 00
SELECT ADF returned: 6A82 - Wrong parameter(s) P1 P2; file not found

SELECT ADF: 00 A4 04 00 07 A0 00 00 00 04 10 10 00
SELECT ADF returned: 6A82 - Wrong parameter(s) P1 P2; file not found

SELECT ADF: 00 A4 04 00 07 A0 00 00 00 03 20 10 00
SELECT ADF returned: 6F 2C 84 07 A0 00 00 00 03 20 10 A5 21 50 0D 56 49 53 41 20 45 4C 45 43 54 52 4F 4E 87 01 01 5F 2D 04 62 67 65 6E BF 0C 05 9F 4D 02 0B 0A 90 00

GET PROCESSING OPTIONS: 80 A8 00 00 02 83 00 00
GET PROCESSING OPTIONS returned: 80 0A 1C 00 08 01 03 00 10 01 01 00 90 00

非常感谢!

Answer 1

EMV规范可以帮助你了解细节。 在响应中只有标记 0x82 和 0x94 值，没有标记和长度部分。

在Get Processing Option (GPO) 命令响应BER-TLV 编码数据。在您的示例中:在标签 0x80“模板，响应消息格式 1”下打包 标签 0x82“EMV，应用程序交换配置文件 (AIP)”值 2 字节 和 rest 是 标记 0x94“EMV，应用程序文件定位器 (AFL)”值。

这是 EMV APDU command/response parser 的结果

> 80 A8 00 00 02 83 00 00
< 80 0A 1C 00 08 01 03 00 10 01 01 00 90 00

A8: # EMV, Get Processing Options
- rq:#"80A8000002830000" # ISO 7816-3, Case 4
  - CLA: "80" # Class byte
  - INS: "A8" # Instruction
  - P1P2: "0000" # Parameters 1 and 2
  - LcData:#"028300"
    - len: "02" # .
    - val:#"8300" # .
      - RFU: "8300" # Authorisation Cryptogram RFU
  - Le: "00" # .
- rs:#"800A1C0008010300100101009000" # Response
  - SW1SW2:#"9000" # Status byte 1 and 2
    - SW1: "90" # Status byte 1 // Normal processing
    - SW2: "00" # Status byte 2
  - DATA:#"800A1C000801030010010100" # .
    - x80:#"800A1C000801030010010100"
      - tag: "80"
      - len: "0A" #  // 10
      - val:#"1C000801030010010100" # Template, Response Message Format 1.
        - x82:#"1C00" # EMV, Application Interchange Profile (AIP)
          - val:#"1C00" # Application Interchange Profile (AIP).
            - B01: "1C"
              # ___1____ - bit 5, Cardholder verification is supported
              # ____1___ - bit 4, Terminal Risk Management is to be performed
              # _____1__ - bit 3, Issuer Authentication is supported
            - B02: "00" # RFU
        - x94:#"0801030010010100" # EMV, Application File Locator (AFL)
          - val:#"0801030010010100" # Application File Locator (AFL).
            - S1:#"08010300" # AFL Record
              - B01: "08" # SFI [xxxxx___] // 1
              - B02: "01" # From record // 1
              - B03: "03" # To record // 3
              - B04: "00" # First hashed
            - S2:#"10010100" # AFL Record
              - B01: "10" # SFI [xxxxx___] // 2
              - B02: "01" # From record // 1
              - B03: "01" # To record // 1
              - B04: "00" # First hashed