如何用pyscard写入智能卡

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1 回答
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提问于 2025-04-16 20:48

我正在使用 acr38f 的读写器/写卡器,我的智能卡是 SLE4418。我该如何往我的智能卡上读写文本呢?

比如说:你好,世界!

apdu = [0XFF, 0X20,0x00,0x00,0x02, 0x00, 0x00]

response, sw1, sw2 = cardservice.connection.transmit( apdu )

apdu = [0XFF,0xA4,0x00,0x00,0x01,0x05]
response, sw1, sw2 = cardservice.connection.transmit( apdu )




apdu = [0XFF,0XB2,0X00,0xA7,0X09]
response, sw1, sw2 = cardservice.connection.transmit( apdu )
print response


apdu = [0XFF, 0XD0,0x00,0xA7,0x09,0xA7,0x02,0xA7,0x02,0xA7,0x02,0xA7,0x02,0xA7] 
response, sw1, sw2 = cardservice.connection.transmit( apdu )

卡片的响应:

connecting to ACS CCID USB Reader 0
ATR 3B 04 92 23 10 91
>  FF 20 00 00 02 00 00
<  00 00 00 90 0 
>  FF A4 00 00 01 05
<  []  90 0 
>  FF B2 00 A7 09
<  FF FF FF FF FF FF FF FF FF 90 0 
[255, 255, 255, 255, 255, 255, 255, 255, 255]
>  FF D0 00 A7 09 A7 02 A7 02 A7 02 A7 02 A7
<  []  90 0 

1 个回答

13

我没有硬件来测试这个,但这应该能帮你入门:

与智能卡的通信涉及发送APDU (智能卡应用协议数据单元) 命令和接收APDU响应。

命令APDU是通过读写器(你的ACR38F)发送的,包含一个4字节的头部,后面跟着数据(还有关于数据大小和响应大小的信息)。

Field    Len Description
--------------------------------------------
CLA     (1) Instruction Class
INS     (1) Instruction Code
P1-P2   (2) Instruction Parameters
Lc  (0,1,3) Number of data bytes to follow
DATA    (*) Data to be transmitted
Le    (0-3) Maximum response bytes

响应的内容包括:

Field    Len Description
--------------------------------------------
DATA    (*) Data to be transmitted
SW1-SW2 (2) Command status

SLE4418为例,要写入数据,值应该如下:

  • CLA = 00
  • INS = D6
  • P1 = 存储字节的内存地址的高位
  • P2 = 存储字节的内存地址的低位
  • Lc = 要存储的字节长度
  • DATA = 要存储的数据
  • Le = (空)

所以在代码中应该是:

WRITE = [0x00, 0xD6]
STARTMSB = [0x00] #change to where on the card you would like to write
STARTLSB = [0x00] #same here
MEM_L = [0x01]
DATA = [0x01]

cardservice.connection.connect()
apdu = READ + STARTMSB + STARTLSB + MEM_L + DATA
response1, sw1, sw2 = self.cardservice.connection.transmit( apdu )

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