EMV TAG 91-为什么最后两个字节为“ 0010”？

发布于 2025-01-24 14:43:12 字数 95 浏览 6 评论 0 原文

EMV标签91
在下面的示例中，为什么最后两个字节为“ 0010”？示例：TLV [910ABCF266A64FF136630010] 我需要最大的帮助谢谢！！！

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智商已欠费 2025-01-31 14:43:12

此标签0x91 发行者身份验证数据属于 MasterCard M/chip 规范。

8个字节是授权响应加密图（ arpc ）。
2个字节是根据M/芯片规范的ARPC响应代码（ RC ）。

M/芯片卡发行器设置的 RC 值，并提供其他卡命令以重置其上的一些计数器。

示例标签数据分析如下：

# Cheef's parser.
# Copyright (C) 2008-2022 Aleksandr Shevelev. https://iso8583.info/
# lib   : "/lib/MasterCard/M_Chip/4/" # M/Chip 4 Card Application Specifications
# tool  : "TLVs"

# stat  : 11 nodes, 0 lookup tables, 100.00% passed (1/1)

TLVs:#"910ABCF266A64FF136630010" # M/Chip 4, Tag + Length + Value (TLV) series
- x91:#"910ABCF266A64FF136630010" # M/Chip 4, Issuer Authentication Data
  - tag: "91"
  - len: "0A" #  // 10
  - val:#"BCF266A64FF136630010" # Issuer Authentication Data.
    - ARPC: "BCF266A64FF13663" # Authorization Response Cryptogram
    - RC:#"0010" # ARPC Response Code
      - B01:#"00"
        - n0: "0" # bits 8-5, RFU
        - n1: "0" # bits 4-1, PIN try Counter
      - B02: "10"
        # ___1____ - bit 5, Approve online transaction
        # ____0___ - bit 4, Do NOT update PIN Try Counter
        # _____0__ - bit 3, Reset go online on next transaction
        # ______00 - bits 2-1, Do not update offline counters

This Tag 0x91 Issuer Authentication Data belongs to MasterCard M/Chip specification.

8 bytes is Authorization Response Cryptogram (ARPC).
2 Bytes is ARPC Response Code (RC) according to M/Chip specification.

The RC value set by M/Chip card issuer and provide additional card commands to reset some counters on it.

The example Tag data parsed as followed:

# Cheef's parser.
# Copyright (C) 2008-2022 Aleksandr Shevelev. https://iso8583.info/
# lib   : "/lib/MasterCard/M_Chip/4/" # M/Chip 4 Card Application Specifications
# tool  : "TLVs"

# stat  : 11 nodes, 0 lookup tables, 100.00% passed (1/1)

TLVs:#"910ABCF266A64FF136630010" # M/Chip 4, Tag + Length + Value (TLV) series
- x91:#"910ABCF266A64FF136630010" # M/Chip 4, Issuer Authentication Data
  - tag: "91"
  - len: "0A" #  // 10
  - val:#"BCF266A64FF136630010" # Issuer Authentication Data.
    - ARPC: "BCF266A64FF13663" # Authorization Response Cryptogram
    - RC:#"0010" # ARPC Response Code
      - B01:#"00"
        - n0: "0" # bits 8-5, RFU
        - n1: "0" # bits 4-1, PIN try Counter
      - B02: "10"
        # ___1____ - bit 5, Approve online transaction
        # ____0___ - bit 4, Do NOT update PIN Try Counter
        # _____0__ - bit 3, Reset go online on next transaction
        # ______00 - bits 2-1, Do not update offline counters

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