Smartcard data explanation

Hi,

2013/5/30 Hruday Ma***ck <hruday.ma***ck@ant***gt.com>

Dear,

     I am Hruday Ma***ck,wnat to know more about smart card. I have doubt on file creation in smart card.Kindly explain following code:

The Following code is a part of data used to prepare smart card commands in C/C++

UCHAR ucDataCreateMF[]={0x62,0x07,0x82,0x01,0x38,0x83,0x02,0x3F,0x00};

--- Cheef's YAML
BER: # ASN.1 Basic Encoding Rules (BER)
     # 620782013883023F00
- tag: "62"
- len: "07"
- val: # 82013883023F00
  - x82: # File descriptor
         # 820138
    - tag: "82"
    - len: "01"
    - val: # 38
      - B1: "38" # File descriptor byte
          # 0____000 - bits 3 to 1, EF structure, No information given
          # 00______ - bits 8 to 7, File accessibility, Not shareable file
          # 0_111000 - bits 6 to 1, DF
  - x83: # File identifier
         # 83023F00
    - tag: "83"
    - len: "02"
    - val: "3F00" #  //  MF - Master File

UCHAR ucDataSelectMF[]={0x3F,0x00};

"3F00" #  //  MF - Master File

UCHAR ucDataSelectEF[]={0x36,0x19};

"3619" Some EF Identifier

UCHAR ucDataCreateEF[]={0x62,0x11,0x82,0x05,0x04,0x01,0x00,0x25,0x15,0x83,0x02,0x36,0x19,0x88,0x01,0x90,0x8A,0x01,0x01};

--- Cheef's YAML
BER: # ASN.1 Basic Encoding Rules (BER)
     # 621182050401002515830236198801908A0101
- tag: "62"
- len: "11"
- val: # 82050401002515830236198801908A0101
  - x82: # File descriptor
         # 82050401002515
    - tag: "82"
    - len: "05"
    - val: # 0401002515
      - B1: "04" # File descriptor byte
          # 0_000___ - bits 6 to 4, EF category, Working EF
          # 00______ - bits 8 to 7, File accessibility, Not shareable file
          # 0____100 - bits 3 to 1, EF structure, Linear structure, variable size, no further information - Record handling
      - B2: "01" # Data coding byte
      - B34: "0025" # Maximum record size (on one or two bytes) // 37
      - B56: "15" # Number of records (on one or two bytes) // 21
  - x83: # File identifier
         # 83023619
    - tag: "83"
    - len: "02"
    - val: "3619"
  - x88: # Short EF identifier
         # 880190
    - tag: "88"
    - len: "01"
    - val: "90"
  - x8A: # Life cycle status byte (LCS)
         # 8A0101
    - tag: "8A"
    - len: "01"
    - val: "01"
         # 00000001 - Creation state

UCHAR ucDataWrite[]={0x31,0x32,0x33,0x34,0x35,0x36};

data to Write, string: "123456"

UCHAR ucDataUpdate[]={0x33,0x34,0x35,0x36,0x37,0x38,0x39}, ucResData[50]={0};

Data to Update, string: "3456789"

UCHAR ucDataAppend[]={0x4D,0x41,0x4C,0x41};

Data to Append, string: "MALA"

UINT iDataLen=0,ucRecordNum,Le,P1=0x00,P2=0x04,uiResDataLen=0,uiResLen,i=0,uiStatus=0;

Initial parameters for Smartcard APDU Command

Thanks,

Hruday

Welcome,
Cheef