问题
I'm using reader/writer acr38f and my smart card is SLE4418. How do I read and write text to my smart card?
For example: Hello World!
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 )
card response :
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
回答1:
I do not have the hardware to test this, but this should get you going:
Communicating with smart cards involves sending APDU (Smart Card application protocol data unit) commands and receiving APDU responses.
Command APDUs are sent through the reader/write (your ACR38F) and consists of a 4-byte header followed by data (and info about the data size and response size)
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
The response consists of:
Field Len Description
--------------------------------------------
DATA (*) Data to be transmitted
SW1-SW2 (2) Command status
In the case of the SLE4418, in order to write data, the values should be as follows:
- CLA = 00
- INS = D6
- P1 = MSB of memory address offset to store bytes
- P2 = LSB of memory address offset to store bytes
- Lc = length of bytes to store
- DATA = data to store
- Le = (empty)
So therefore in code:
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 )
Other relevant info:
- http://www.belelectro-m.by/docs/doc3723.pdf
- http://www.youcard.de/datenblaetter/chipkarten/DB%20SLE441828.pdf
来源：https://stackoverflow.com/questions/6572979/how-to-write-smart-card-with-pyscard