public string GetBlockValue(int block, int hCard)
{
var value = @"";
_returnCode = AuthenticateBlock(block, hCard);
if (_returnCode != ModWinsCard.SCARD_S_SUCCESS)
{
throw new ApplicationException(@"Fail to authenticate block", new ApplicationException(ModWinsCard.GetScardErrMsg(_returnCode)));
}
_recvBuffLen = _sentBuff[4] + 2;
_sentBuff = new byte[255];
_recvBuff = new byte[255];
_sentBuff = APDUCommands.GetBlockValue(block);
_returnCode = ModWinsCard.SCardTransmit(hCard, ref _ioSendRequest, ref _sentBuff[0], _sentBuff.Length, ref _ioSendRequest, ref _recvBuff[0], ref _recvBuffLen);
if (_returnCode != ModWinsCard.SCARD_S_SUCCESS)
{
throw new ApplicationException(@"Fail to fetch block value", new ApplicationException(ModWinsCard.GetScardErrMsg(_returnCode)));
}
for (int j = 0; j <= _recvBuffLen - 3; j++)
{
value += Convert.ToChar(_recvBuff[j]);
}
return(value);
}
private int AuthenticateBlock(int nBlock, int hCard)
{
_ioSendRequest = new ModWinsCard.SCARD_IO_REQUEST {
dwProtocol = ModWinsCard.SCARD_PROTOCOL_UNDEFINED, cbPciLength = 8
};
_recvBuffLen = 0x02;
_sentBuff = new byte[255];
_recvBuff = new byte[255];
_sentBuff = APDUCommands.AuthenticateBlock(nBlock);
return(ModWinsCard.SCardTransmit(hCard, ref _ioSendRequest, ref _sentBuff[0], _sentBuff.Length, ref _ioSendRequest, ref _recvBuff[0], ref _recvBuffLen));
}
public void UpdateBlockValue(int block, string value, int hCard)
{
_returnCode = AuthenticateBlock(block, hCard);
if (_returnCode != ModWinsCard.SCARD_S_SUCCESS)
{
throw new ApplicationException(@"Fail to authenticate block", new ApplicationException(ModWinsCard.GetScardErrMsg(_returnCode)));
}
_recvBuffLen = 0x02;
_sentBuff = new byte[255];
_recvBuff = new byte[255];
_sentBuff = APDUCommands.SetBlockValue(block, value);
_returnCode = ModWinsCard.SCardTransmit(hCard, ref _ioSendRequest, ref _sentBuff[0], _sentBuff[4] + 5, ref _ioSendRequest, ref _recvBuff[0], ref _recvBuffLen);
if (_returnCode != ModWinsCard.SCARD_S_SUCCESS || _recvBuff[0].ToString(@"X2") != @"90")
{
throw new ApplicationException(@"Fail to update block value", new ApplicationException(ModWinsCard.GetScardErrMsg(_returnCode)));
}
}