EEPW论坛

功能描述：更改Esam密钥。 
输入条件：KeyId密钥标识符
输出项目：RetData=0x00操作成功;RetData=0xFF此操作失败。
更改密钥,80/84,D4,01/3x,apduidc,lc,keydata;入口:无;出口0x00此操作成功,0xFF此操作失败

unsigned char EsamChipChangeKey(unsigned char Sign, unsigned char Flag)
{ 
    unsigned char i;
    CmdBuf[CLA] = 0x84;
    CmdBuf[INS] = 0xD4;
    CmdBuf[P01] = Sign;
    CmdBuf[P02] = Flag;
    CmdBuf[P03] = 0x18;
    for(i = 0; i < 5; i ++)
    {
        CosCommand(0,2,0x18);
        if((SwBuf[0] == 0x90) && (SwBuf[1] == 0x00))
        {
            break;
        }
    }
    if(i < 5) 
    {
        return 0x00;
    }
    else
    {
        return 0xff;
        
    }
}